Add the function cmake_expand_imported_targets() to expand imported
targets in a list of libraries into their on-disk file names for a
particular configuration. Adapt the implementation from KDE's
HANDLE_IMPORTED_TARGETS_IN_CMAKE_REQUIRED_LIBRARIES which has been in
use for over 2 years. Call the function from all the Check*.cmake
macros to handle imported targets named in CMAKE_REQUIRED_LIBRARIES.
Alex
A lot of the libraries won't be found by default so will spit out
all sorts of errors. Don't kill QT_LIBRARIES_PLUGINS altogether as
it is sometimes useful.
The Borland compiler was re-branded as CodeGear during 2007-2009 and
since 2009 is the Embarcadero compiler. They offer predefined macros:
http://docwiki.embarcadero.com/RADStudio/en/Predefined_Macros
and distinguish themselves by __CODEGEARC__ and __CODEGEARC_VERSION__.
Version 6.30 (C++Builder XE) changed the meaning of some flags:
http://docwiki.embarcadero.com/RADStudio/en/C%2B%2B_Compiler_Option_Changes_for_XE
Teach Embarcadero compiler information files to generate build rules
with flags matching the compiler version. Leave the flags unchanged
for old Borland versions. Always set the BORLAND toolchain indicator
for compatibility with existing projects that test it. Also set the
EMBARCADERO indicator for newer toolchains.
The GenerateExportHeaders test was failing on one machine, the version
could not be determined there, so the _gcc_version was empty,
so the first argument to if() was empty, so it complained:
http://open.cdash.org/testDetails.php?test=135623436&build=2016288
Use double quotes to turn the non-existant first argument into an empty
string.
Alex
Since we know which compiler we have we can test those OpenMP flags first that
are likely to be correct. This doesn't make any difference for GNU compilers,
but it should avoid useless try_compiles and output cluttering for all others.
The Borland compiler is now the Embarcadero compiler. Rename the shared
platform information file to reflect this. This does not change the
interface, as old versions are still "Borland", but will allow new
versions released by Embarcadero to be supported cleanly.
Newer Ruby versions (from 1.9 onward) seem to warn if you query Config::CONFIG
and print a warning to use RbConfig instead. RbConfig seems to also work in
older versions, at least in 1.8. Use a macro to query RbConfig first and only
if that doesn't give anything fall back to Config.
This contains a change, which changes the behaviour a bit:
now X11_xf86vmode_FOUND is only set to TRUE and the include directory
is added to X11_INCLUDE_DIR, if additionally to X11_xf86vmode_INCLUDE_PATH
also X11_Xxf86vm_LIB has been found.
I hope this doesn't cause regressions somewhere.
Alex
Configure the build_mingw.cmake.in config_mingw.cmake.in files
into the binary directory of the directory being built, not the
top level binary directory for the project.
This also cleans up a bunch of things on the way:
-when perl was queried for paths they were not converted to CMake style on
Windows.
-the result when perl was queried for the perl library name was ignored since
it was expanded with the possible paths, which is not a valid input for
find_library(). If perl returns a library name we now will look only for this
name and not for the default names and use the default names only when the
executable does not give us a hint.
-get rid of 2 variables that were only used at one place and directly put the
values in the call to find_library() and find_path().
Inspired by Jeff Trull
1e16406 CMakeAddFortranSubdirectory: Add NO_EXTERNAL_INSTALL option
6f6891b CMakeAddFortranSubdirectory: Always parse arguments
48a09f8 CMakeAddFortranSubdirectory: Make IMPORTED targets GLOBAL
067c1f4 VSGNUFortran: Disable test in special cases
bd69e1c VSGNUFortran: Add special case for SunPro Fortran runtime library
414a780 CMakeAddFortranSubdirectory: Validate gfortran architecture
7e0d9f1 CMakeAddFortranSubdirectory: Find gfortran in PATH
d6b0312 CMakeAddFortranSubdirectory: Fix documentation format and typos
e4ae038 CMakeAddFortranSubdirectory: Allow full paths to directories
538c345 Add CMakeAddFortranSubdirectory to use MinGW gfortran in VS
3c6af5f Merge branch 'add-CheckLanguage-module' into CMakeAddFortranSubdirectory
d4b77eb Avoid discovering system infos for documentation. Adding some path is enough.
9002f73 Fix non existent std::string::clear on VS6
02ccb32 Create getDocumentedModulesListInDir which may be used in other context.
24fbc28 Add missing section markup for CPackComponent
bafd8a9 Example of builtin variable documentation (i.e. only used in C++ source code).
543f1ad Make the load of script documentation more efficient and dynamic.
cdbd1a9 Fix another compiler warning due to a typo
52c53de Really avoid compiler warning about unused vars
37f90ed Calm down compiler warning about unused var
7c82b7f Fix potential bad memory access, thanks to Eike
62b589b Suppress unused var, beautify code, avoid 1 extra newline.
751713f Update bash completion file in order to handle new CPack doc options.
1629615 CPack Documentation extraction from CMake script begins to work
83e34dd Implement simple CMake script comment markup language.
c6a0169 CPack begin the implementation of --help-command* and --help-variables*
CPack help will be searched in any CPack*.cmake file located
near to CPack.cmake file. The script files is parsed iff
the first line begin with ##section. Moreover the documentation
section name is specified on the remaining part of the line
minus the space immediately following ##section.
The functions in FindGettext create a custom target. If the functions
are called multiple times, multiple times the same target is created.
This works only if CMP0002 is set to OLD.
With this patch there is only one central target created, and each
invocation of the function creates a target with a unique name and
make the central target depend on this one.
Alex
Also, removed detection of header file from <PREFIX>/include.
Can't find any example in alsa source code where the library headers
were installed outside of <PREFIX>/include/alsa.
We do not yet support "make install" in the external project case.
Document this explicitly in the interface. Require the caller to use an
option to "disable" the unsupported behavior. This will allow us to add
the behavior by default in the future without clobbering existing
projects that handle the installation themselves.
cmake_add_fortran_directory uses imported targets when using the
mingw fortran compiler. This change makes those targets global
in scope so they act just like the real targets that exist when
a fortran compiler exists and regular add_subdirectory is used.
Verify that MINGW_GFORTRAN not only points to a MinGW gfortran but also
one that compiles for the target architecture. This prevents using a
32-bit gfortran in a 64-bit MSVC build.
In the find_program(MINGW_GFORTRAN) call use the PATHS option for
hard-coded guesses instead of HINTS. This allows the user environment
to override the guesses and corrects usage of the command options.
Fix the implementation to allow full paths with spaces. Change the
interpretation of relative paths to be with respect to the current binary
directory. This matches the convention used in ExternalProject. Test
both full and relative paths in the VSGNUFortran test.
This patch adds a new module that allows for easy integration of MinGW
gfortran and the Visual Studio compiler. It is done in a function called
cmake_add_fortran_subdirectory. The patch also includes a test for this
feature.
Define a "check_language(<lang>)" macro to test whether <lang> can be
enabled. Cache the result in CMAKE_<lang>_COMPILER. Add a test case
covering expected results.
If CXX or Fortran is enabled before C then the values of
CMAKE_SHARED_MODULE_C_FLAGS
CMAKE_SHARED_MODULE_CREATE_C_FLAGS
may not be available. On platforms where MODULE library (plugin) creation
is the same as SHARED library creation initialize the MODULE creation
flags from the SHARED creation flags of the matching language instead of
assuming that C has been enabled first.
Teach the COnly and CxxOnly tests to build MODULE libraries. The latter
covers this specific case.
Causes compiler modules (currently only GNU) to set a
CMAKE_DEPFILE_FLAGS_${lang} variable, which communicates to
the generator the flags required to cause the compiler to create
dependency files.
CHECK_INCLUDE_FILES("foo.h" HAVE_FOO_H) gave an output like:
Looking for include files HAVE_FOO_H
After this change it does now what CHECK_INCLUDE_FILE() also does:
Looking for include files foo.h
When using the NSIS generator from CPack the file NSIS.template.in is
used to generate a project.nsi file for NSIS to process. The file
consists code in the NSIS scripting language. Among other functions
there is an onInit function the initializes the installer. The function
(tries to) recognise admin and power users but fails since NSIS
scripting language relative includes the jump from the current command
so +3 means "run the third command after this one", so a failed check
for admin completely skips the check for a power user and goes directly
to "done:".
User permission lookup was added in initial NSIS support by commit
a11b9a4c (Merge from CPack branch, 2006-01-01). Later commit b1b052fd
(Several changes to for NSIS, 2006-03-01) added a line inside a block
that should be skipped by a jump without updating the jump length.
Update the jump length to correct the behavior.
If the debug and release libraries are the same (which usually means only one
of them was found) do not output the library as "optimized" and "debug", but
just as one plain library. At the end this means that the Find* output of the
avarage (Un*x) user will be much less cluttered.
RUBY_VERSION was always set, even if no RUBY_EXECUTABLE was found. While it
may make sense to assume a default version if we can't execute the binary, it
certainly doesn't make sense to report a version if there is no executable at
all.
98d2031 Fix BundleUtilities test failure with space in build path.
36d6641 Fix new BundleUtilities test failure on Mac 10.4.x
0d96dec GetPrerequisites: Add test for @rpath support.
880139a GetPrerequisites: Add support for @rpath on Mac OS X.
9a6b102 GetPrerequisites: Add support for @rpath on Mac OS X.
bb2b264 FindOpenSSL: also parse version number define with uppercase letters
7053a00 FindOpenSSL: only try to parse opensslv.h if it exists
44ba7a3 Merge branch 'master' of git://cmake.org/cmake into openssl-version
8e8672c FindOpenSSL: improve version number handling
- Enhance extract doc parser. Seems robust now. The legacy
module documentation parser works as before ignoring
the new markup.
- Proof of concept for CPack (generic), CPack RPM and CPack Deb
generator for macro and variables.
Try cpack --help-command and cpack --help-variables
The language is very simple. It use ##<keyword> special comment
which opens a structured documentation block and ##end closes it.
This may be used to extract documentation for macro as 'command'
and 'variables' such that cpack --help-command and --help-variable
does parse builtin modules files (CPack.cmake, CPackComponent.cmake,
...) in order to extract the corresponding doc.
QNX has the phtread stuff in the standard library. The best way would
IMHO be to check if a program that uses pthread_* can be successfully
linked without specifying any linker option before trying out the
different flags.
Change to consider a library embedded if it is found in a subdirectory relative to the
using executable/library. Previous commit considered them local.
This case is encountered when @rpath is used with framework libraries, which are inside a directory tree.
On dashmacmini2 the test showed output like this:
-- Found PythonInterp: /usr/bin/python (found version "Unknown option: --
usage: /usr/bin/python [option] ... [-c cmd | file | -] [arg] ...
Try `python -h' for more information.")
On my machine where python outputs "Python 2.7" this worked, but
PYTHON_VERSION_MAJOR, PYTHON_VERSION_MINOR, and PYTHON_VERSION_PATCH were all
set to "2.7".
Add some checks that the version output has the expected form before using it.
This allows the developer to tell FindPythonInterp which Python version should
be searched for. This allows the right version to be chosen for a project
without user assistance if there are specific requirements. This is especially
useful as it is common to have major versions 2 and 3 installed in parallel,
which are partly incompatible.
6856b4d Merge topic 'link-shared-depend-cycle-issue-12647' into check_symbol_exists
8e1f376 add a test for Check{,CXX}SymbolExists
813eca6 CheckSymbolExists: force the compiler to keep the referenced symbol
0df1942 Detect SGI MIPSpro compiler version with its id
a5e892c Document compiler version macro formats used for detection
d7c6f41 Detect HP compiler version with its id
3dd9fa9 Detect SunPro compiler version with its id
c198730 Detect Watcom compiler version with its id
5899b98 Detect Clang compiler version with its id
b8cfa65 Detect PGI compiler version with its id
6dae666 Detect IBM XL compiler version with its id
4080d55 Detect Borland compiler version with its id
2cc205a Detect Intel compiler version with its id (#11937)
a6d83cc Detect MSVC compiler version with its id
a662855 Detect GNU compiler version with its id (#6251)
fa7141f Add framework to detect compiler version with its id (#12408)
Otherwise the compiler may optimize out the reference to the symbol as the
previous version was not really using this. This leads to symbols that are
only in a header but not in the given libraries to be reported as present.
This came up on the first try to fix bug 11333 as "gcc -O3" would optimize
out the reference to pthread_create() so the correct library the symbol is in
was not detected.
The new test code was suggested by Brad King.
When we have no MPI compiler wrapper and search explicitly for the MPI
C++ library append it correctly to the list of libraries instead of
using a space.
Suggested-by: Mourad Boufarguine <bouffa@gmail.com>
This fix bug #12863 whose symptom was a lot of "warning: File listed twice"
printed out by rpmbuild when processing the spec file.
Signed-off-by: Eric NOULARD <eric.noulard@gmail.com>
First this fixes the bug that e.g. version "1.0.0" was shown as "1..". When
pkg-config was used to find OpenSSL the header file was parsed for the version
number even if pkg-config returned it already. Finally we also include the
patch level (i.e. the letter after the version number) in OPENSSL_VERSION.
When GIT_EXECUTABLE points at ".../Git/cmd/git.cmd" in an msysGit
installation we previously failed to detect the version number in a
subtle case. The "git.cmd" assumes 'chcp' is in PATH. It is typically
available at "C:\Windows\System32\chcp.com". On 64-bit Windows the File
System Redirector maps this location to "C:\Windows\SysWOW64\chcp.com"
for 32-bit processes. However, some Windows installations fail to
provide chcp.com at this path. Whenever git.cmd runs in a 32-bit
command shell, as it does under a 32-bit CMake binary, it reports
'chcp' is not recognized as an internal or external command,
operable program or batch file.
on stderr. Capture stderr separately so it does not affect parsing
of the version number.
See also msysGit issue 358:
http://code.google.com/p/msysgit/issues/detail?id=358
Note that FindGit prefers "git.cmd" over "git.exe" because it sets up
the proper HOME environment variable necessary for Git ssh connections
to work the same as they do from the Git bash prompt.
Decode decimal digits from _SGI_COMPILER_VERSION or _COMPILER_VERSION to
compute version number components. See documentation at:
http://predef.sourceforge.net/precomp.html
The MSVC, HP, XL, SunPro, Watcom, Borland, and Intel compilers specify
their version number in components encoded in a single integer value.
Document the components that we use to compute version numbers.
Decode hex digits from __SUNPRO_C and __SUNPRO_CC to compute the version
number components. Note that the constant encodes decimal digits as hex
digits (never larger than 9). We represent them as decimal after
extraction. See documentation at
http://predef.sourceforge.net/precomp.html
Although the documented version number format is
0xVRP where V = Version, R = Revision, P = Patch
it holds only though SunPro C/C++ version 5.9. Later versions have
a two-digit revision (minor) number so their format is 0xVRRP.
When cmake searches for Python libs in Windows it searches in:
[HKEY_LOCAL_MACHINE\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
However, the information might not always reside there. The information
could also reside in:
[HKEY_CURRENT_USER\\SOFTWARE\\Python\\PythonCore\\${_CURRENT_VERSION}\\InstallPath]/libs
when one installs Python for a single user and not for all users.
Fix typo introduced in commit 66a08c10 (more uniform approach to enable
language, 2004-08-26). The optimization option should be /O2 for
Release configurations and /O1 for MinSizeRel.
Suggested-by: He Yuqi <yuqi.he@gmail.com>
This addresses Bug 11882 which provided a sample implementation for adding
support for cusparse. I went ahead and added all the libraries I thought
appropriate.
Added support for additional import paths during protoc invocation
time to the PROTOBUF_GENERATE_CPP public macro via a new
PROTOBUF_IMPORT_DIRS optional variable.
Patch courtesy of Miroslav Kes <mkes@ra.rockwell.com>
The default OS X 10.4 linker incorrectly searches for dependencies of
linked shared libraries only under the -isysroot location. It fails to
find dependencies of linked shared libraries in cases such as the
ExportImport test. It produces errors like:
/usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: warning can't open dynamic library:
libtestLib3Imp.dylib
referenced from: /.../ExportImport/Root/lib/libtestLib3lib.1.2.dylib
(checking for undefined symbols may be affected) (No such file or directory, errno = 2)
/usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: Undefined symbols: _testLib3Imp
referenced from libtestLib3lib expected to be defined in
libtestLib3Imp.dylib
or with CMAKE_SKIP_RPATH off to enable install_name in the Export side:
/usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: warning can't open dynamic library:
/Developer/SDKs/MacOSX10.4u.sdk/.../ExportImport/Export/impl/libtestLib3Imp.dylib
referenced from: /.../ExportImport/Export/libtestLib3lib.1.2.dylib
(checking for undefined symbols may be affected) (No such file or directory, errno = 2)
/usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: Undefined symbols:_testLib3Imp
referenced from libtestLib3lib expected to be defined in
/.../ExportImport/Export/impl/libtestLib3Imp.dylib
Note how "/Developer/SDKs/MacOSX10.4u.sdk" is prepended to the dependent
library path.
Commit 2cff26fa (Support linking to shared libs with dependent libs,
2008-01-31) and commit 82fcaebe (Pass dependent library search path to
linker on some platforms, 2008-02-01) worked around the problem by
defining platform variable CMAKE_LINK_DEPENDENT_LIBRARY_FILES. It tells
CMake to link to dependent libraries explicitly by their path thus
telling the linker where to find them.
Unfortunately the workaround had the side effect of linking dependent
libraries and defeats most benefits of LINK_INTERFACE_LIBRARIES.
Fortunately OS X 10.5 and above do not need to find transitive
dependencies at all so we can avoid the workaround on Modern OS X.
Previously we linked C, Fortran, and ASM shared libraries compiled with
the HP compiler using a direct invocation of the linker (ld). This
behavior was left historically from support for an ancient HP C compiler
that did not know how to create shared libraries. Fortran shared
libraries need to be linked with the compiler to get the language
runtime library dependencies as is already done for C++.
Update the HP-UX-HP* platform information to use the compiler front end
when linking shared libraries. This works on modern HP tools and
produces correct behavior. If there is a need to support older tools
again we can add a special case for them.
...if it matches "windres", as opposed to being exactly equal to "windres"
Cross-compiling windres compilers are named something like
"i686-w64-mingw32-windres" (for example)
automoc now defaults to strict mode, also with Qt4, i.e. it behaves as
the documentation says by default. I also inverted the switch
CMAKE_AUTOMOC_STRICT_MODE to CMAKE_AUTOMOC_RELAXED_MODE.
Docs and test adapted accordingly.
Alex
The User may now specific a list of file that shouldn't be
automatically handled by CPack but specified by the user.
Like %config(noreplace) or specific %attr.
The concerned files/dir lines will be removed from the set
automatically handled by CPack.
The mingw32-make tool does not handle parenthesis in the path to a
source file consistently. When CMake is installed in a typical location
like "c:\Program Files (x86)\CMake 2.8\" the mingw32-make tool fails on
the FortranCInterface detection project sometimes with errors like
>mingw32-make -f CMakeFiles\myfort.dir\build.make CMakeFiles/myfort.dir/my_module.f90.obj
mingw32-make: *** No rule to make target `x86)/CMake 2.8/share/cmake-2.8/Modules/FortranCInterface/my_module.f90)',
needed by `CMakeFiles/myfort.dir/my_module.f90.obj'. Stop.
due to parens in the path to the FortranCInterface source directory.
However, the behavior varies with the file name of build.make:
>copy CMakeFiles\myfort.dir\build.make CMakeFiles\myfort.dir\build2.make
>mingw32-make -f CMakeFiles\myfort.dir\build2.make CMakeFiles/myfort.dir/my_module.f90.obj
[ 3%] Building Fortran object CMakeFiles/myfort.dir/my_module.f90.obj
Tested with
>mingw32-make -v
GNU Make 3.82
Built for i386-pc-mingw32
Work around the problem by copying the whole FortranCInterface source
directory in to the project build tree.
2d11951 Merge branch 'master' into AutomocIncludedDotMocFileHandling
1eca18f automoc: add documentation for CMAKE_AUTOMOC_STRICT_MODE
bc278ce automoc: fix line length
62e223e automoc: add variable CMAKE_AUTOMOC_STRICT_MODE, to enable strict parsing
40c5167 automoc: accept even more .moc files in non-strict mode
c207f5d automoc: also accept other files when .moc is included in non-strict mode
9c0df72 automoc: add a StrictParseCppFile(), which is only qmake-compatible
174bf35 automoc: move the code for finding headers into separate function
8507eae automoc: fix handling of included _p.moc files
7ada172 automoc: some more linebreaks for the warnings for better readability
3b93e26 automoc: add extra check whether the header contains Q_PRIVATE_SLOT
4745715 Add a test case for the use of Q_PRIVATE_SLOT.
bde4edb automoc: add special handling for including basename_p.moc, with test
74ab0f6 automoc: move some code from the big parsing loop into separate functions
bc7560e automoc: add test for including a moc_abc_p.cpp file
30fd8e6 automoc: add test for including the moc file from another header
...
Teach CMakePlatformId.h to construct an "INFO:compiler_version[]" string
literal from macros COMPILER_VERSION_(MAJOR|MINOR|PATCH|TWEAK) to be
defined in CMake(C|CXX)CompilerId.(c|cpp) for each compiler. Provide
conversion macros DEC() and HEX() to decode decimal or hex digits from
integer values. Parse the version out of the compiler id binary along
with the other INFO values already present.
Store the result in variable CMAKE_<LANG>_COMPILER_VERSION in the format
"major[.minor[.patch[.tweak]]]". Save the value persistently in
CMake(C|CXX)Compiler.cmake in the build tree. Document the variable for
internal use since we do not set it everywhere yet.
Report the compiler version on the compiler id result line e.g.
The C compiler identification is GNU 4.5.2
Report CMAKE_(C|CXX)_COMPILER_(ID|VERSION) in SystemInformation test.
ae62a1c Test CMAKE_GNUtoMS option in ExportImport on MinGW and MSys
afb00fe Add CMAKE_GNUtoMS option to convert GNU .dll.a to MS .lib
61e8629 Factor makefile generator link rule lookup into helper function
a603250 Load platform files that need to know the ABI when possible
ecd8414 Fortran: Detect pointer size in gfortran on MinGW
0efe602 TinyCC: Add default compilation flags (#12605)
ec636e2 TinyCC: Add compiler info for shared libs on Linux (#12605)
1f49d72 Recognize the Tiny C Compiler (#12605)
This allows you to have more than source file with the same name but different
directories. The intermediate and configuration files are now in this same directory.
Nvcc can emit '/path' instead of '//path' which can cause a lot of grief later. We test
to see if the file exists, if it doesn't then we see if the file exists with '/'
prepended. Files that don't exist won't be added to the list.
Fix a long outstanding bug when a file in the dependency list wasn't found. This bug
wouldn't reset the dependencies, so the makefile would still want the missing file when
building. The work around was to configure twice, but this is no longer necessary.
Teach the Windows-GNU.cmake platform file to look for Visual Studio
tools matching the target ABI. Add an extra step to the link command
for shared libraries and executables that export symbols and on which a
new GNUtoMS property is set (initialized by the CMAKE_GNUtoMS option).
Tell the GNU linker to output a module definition (.def) file listing
exported symbols in addition to the GNU-format import library (.dll.a).
Pass the .def file to the MS "lib" tool to construct a MS-format DLL
import library (.lib).
Teach the install(TARGETS) command to install the MS import library next
to the GNU one. Teach the install(EXPORT) and export() command to set
the IMPORTED_IMPLIB property pointing at the import library to use the
import library matching the tools in the importing project.
Load platform files named in CMAKE_<lang>_ABI_FILES for each language
once the ABI sizeof(void*) is known. During the first configuration
this is after the test for working compiler and ABI detection checks.
During later configurations the ABI information is immediately available
because it has been saved in CMake<lang>Compiler.cmake.
Use __SIZEOF_POINTER__ which the GNU Fortran compiler defines at least
on 64-bit MinGW. Assume default size 4 on MinGW if gfortran does not
define the size.
Adding VERBATIM to the ADD_CUSTOM_COMMAND calls in the qt4 macros
ensures that paths are properly quoted when passed to the shell.
This fixes issues when building projects that contained paths with
special characters (according to /bin/sh), such as parentheses or
spaces.
Use the "-shared" option to link shared libraries. The compiler does
not support "-Wl," or "-rpath" but does know how to pass "-soname"
through to the linker.
Perform multiple separate searches in order. If ZLIB_ROOT is set search
it exclusively so it takes precedence over CMAKE_PREFIX_PATH. This
allows a user to provide -DZLIB_ROOT=/path/to/zlib/prefix on the CMake
command line to tell it exactly where to find zlib. Otherwise fall back
to a normal search.
Inspired-by: Andreas Schneider <asn@cryptomilk.org>
982b766 Eclipse: use new variable CMAKE_ECLIPSE_GENERATE_SOURCE_PROJECT
1110e45 Eclipse: create links to subprojects also in the source-project (#12579)
65dde30 FindGettext: two more fixes for files with multiple dots
e48fcff -make GETTEXT_PROCESS_PO_FILES() work with files with multiple dots
ecb4459 Strip trailing whitespace
Handle @rpath much like other Unixes, by doing a find_file with the given directories.
Also, consider a library to be local if it is found in the same directory or a subdirectory relative to the user
executable/library. Previously, it was local only if found in the same directory.
This case is encountered when @rpath is used with framework libraries, which are inside a directory tree.
Previously ECLIPSE_CDT4_GENERATE_SOURCE_PROJECT was used, but the
new name CMAKE_ECLIPSE_GENERATE_SOURCE_PROJECT is more in line with
the general naming conventions in cmake, and, more importantly IMO,
in cmake-gui it now appears right next to the other eclipse-related
variables, which all start with CMAKE_ECLIPSE_.
A warning is printed if the old variable is TRUE and the new one isn't,
so users should notice that they have to enable the new one.
Alex
537020f Tests: Nudge MFC test to pass on VS 6 dashboards (#11213)
51f442e VS11: Update InstallRequiredSystemLibraries.cmake for VS11 (#11213)
d85ab7a Tests: Add environment logging to the MFC test (#11213)
011694c VS10: Use expected values for UseOfMfc (#11213)
a2e6d24 Tests: Fix MFC test to work with VS 10 and later (#11213)
Patch by Albert Astals Cid.
E.g. plasma_package_org.kde.activityswitcher.po will now be installed
correctly as plasma_package_org.kde.activityswitcher.mo, and not as
plasma_package_org.mo.
This is kind-of related to #12282
Alex
I've just found out that use of FindBISON.cmake shipped with CMake 2.8
on system where bison++ is default bison executable (e.g. Debian Linux)
will result in corrupted CMakeCache.txt file and parse error due to
"Offending entry"
As FindBISON.cmake logic used to obtain installed bison executable
version is tailored to match only the message used in GNU Bison it fails
on absolutely different Bison++ version message and whole version
message including \n characters is stored into BISON_VERSION which is
then dumped into CMakeCache.txt, so everything after first \n character
makes "Offending entry".
467ee36 Check plugin variables are defined before warning.
4571ea6 Don't resolve directories; are never relative.
9cfc920 Match fixup_qt4_executable with documentation.
This commit adds a new target property AUTOMOC_MOC_OPTIONS, which
can be set to add extra options for the moc invocations done via automoc.
This is equivalent to the OPTIONS parameter in the qt4_wrap_cpp() macro.
Alex
66bd543 Eclipse: fix#12417, don't create wrong src pathentries
70de8bd Eclipse: detect number of CPUs, set CMAKE_ECLIPSE_MAKE_ARGUMENTS accordigly
117f2b8 Eclipse: add Build and Clean targets to targets
c3f30bd Eclipse: move code for generating links to targets into separate function
cef6bd9 Eclipse: move code for generating links to projects into separate function
b6d4de7 Eclipse: add virtual folder for each target
COVERAGE_EXTRA_FLAGS is a space separated value of extra flags
that will be passed to gcov when ctest's coverage handler invokes
gcov to do coverage analysis.
Map to CoverageExtraFlags in the CTest ini file. Use default value
of "-l" to match the coverage handler's earlier behavior from ctest
2.8.4 and earlier. The fix for related issue #11717 had added a " -p"
which was the cause of both #12415 and #12490. Here, we revert that
change to the default value, so -p is no longer there by default.
The people that care to add -p may do so in their own build trees
by appending " -p" to the new cache variable COVERAGE_EXTRA_FLAGS.
dcd2459 Eclipse: better message when Eclipse version could not be determined
b4b2fc3 Eclipse: don't create VirtualFolders if not supported
5b200e3 Detect whether the current Eclipse version supports VirtualFolders
4974ec9 Eclipse generator: detect Eclipse version
41e2b1d Make add_compiler_export_flags a function again.
6a10deb Made ADD_COMPILER_EXPORT_FLAGS into a macro.
2d1acfe Don't warn when nothing to do in visibility function.
d679568 Just code style changes.
67fcc83 Simplify IntelVSImplicitPath detection project
a7ce26d Move IntelVSImplicitPath project to better location
539a822 Enable Fortran tests for IDE builds.
555f589 For VS Intel Fortran IDE builds, add a check to find the Fortran library PATH.
71402eb FortranCInterface: Compile separate Fortran lib in VerifyC[XX]
Making this a macro had unintended issues on (among others) Windows
compilers. Moving it back to being a function using PARENT_SCOPE still
satisfies the use case where we simply want to obtain the extra flags.
Use the ENV{LIB} variable directly instead of parsing the output of the
whole environment from "set". Store the output in a .cmake script and
include it from CMakeDetermineCompilerABI instead of using file(READ).
To use VS C and Fotran in the same solution, it is required that VS be
able to find the Fortran run time libraries as they will be implicitly
linked by any Fortran library used by VS C programs. This adds a check
into CMakeDetermineCompilerABI using a try-compile to find the correct
PATH.
The Intel Fortran plugin for Visual Studio requires Fortran source files
to be compiled in a separate target from C and C++ code. Compile the
VerifyFortran.f source file in a separate library and link the main
VerifyFortanC executable to it.
90efed6 Xcode: Honor Fortran_FORMAT target and source file property
5c0c635 Fortran: Add support for free- and fixed-form flags
47a0c75 VS: Map Fortran free- and fixed-format flags to IDE options
d6e2a06 VS: Map per-source Fortran flags to IDE options
1c2508a Use FIND_PACKAGE_HANDLE_STANDARD_ARGS second mode
d179500 Update documentation of FindPythonInterp.cmake
4fd1e28 Determine python version
20980ef Search for the installed python interpreter first
Re-fix problem exposed by recent commit to FindPythonInterp.
If the find "details" has new lines in it, then replace them
with the empty string so that the string may be saved as a
cache entry that can be re-read next time CMake runs.
Use REGEX REPLACE, and replace with an empty string, eliminating
the problem characters, so that we may easily extend this to
include additional problem characters in the future if necessary.
Currently the VS generators do not support Intel C/C++ .icproj files and
the MS tools do not include a Fortran compiler. Therefore we can always
set the C and CXX compiler IDs to "MSVC" and the Fortran ID to "Intel".
This fixes a regression in support for the Intel Fortran compiler under
the VS plugin introduced by commit cd43636c (Modernize Intel compiler
info on Windows, 2010-12-16). The commit moved the compiler information
into platform files that only load when the proper compiler id is set.
It worked for the NMake Makefiles generator but not for the VS IDE
generator because it did not set the compiler id.
6a6393c Don't use a variable name that might be used in other files.
5ca8c56 Fix up verbatim code sections of the dox.
75596e6 Don't start a line with a dash(-)
826374a Remove blank line at the start of the file.
8b9b8e1 Add documentation about the prefix and no_deprecated options.
51bc63a Fix the feature of using a specific prefix for macros.
3449f6b Add quotes in case cmake is installed in a prefix with a space.
36d28f2 Fix Compiler id variable name.
99b2aab Disable the tests for Watcom.
7ac0ab1 Quote paths in case there is a space in one of them.
89108b9 Look for errors reported by PGI too.
e0cc024 Add missing NO_EXPORT macro variant.
1b031d1 More consistency in the macro options.
03d60c7 Try to make the macros do almost nothing for Watcom.
6adeda9 Possibly fix configuration test on AIX.
e253348 Possibly fix test on HPUX.
32eff0c Test for too-old-intel compilers.
42154ec Fix up the regex command for Intel.
a147a06 Add some settings for non-truncation of test output.
bf73e75 Hopefully add version extraction for Intel.
aa4f0b6 Fix the version extraction regex for clang.
a493d1a Test the correct cxx variable.
b6ee2ee Comment the test assertion for now
a9a8b9e Exclude win32 from hidden visibility checks.
afae7a9 Start testing expected values for compiler flags.
1ae3365 Exclude PGI from exports and deprecated.
f426496 Exclude cygwin from the hidden visibility feature.
f84c7db Don't enable deprecated on old GCC
9672b33 Don't enable deprecated on HP.
10d8c44 Disable testing of deprecated macros.
97392a7d Fixup forgotten part of aed84517c92aeab4f Borland can't do deprecated.
c41c68b Try to error on deprecated on Intel and SunCC.
aed8451 Test for deprecated attribute before declspec.
c448b09 Perform the -Werror test only once.
fb88c6e Add some messaging output to make remaining issues findable.
01e9e98 Test -Werror instead of enabling it per compiler.
9aab2aa Expect the tests to pass if hidden visibilty is not enabled.
856bdb3 Don't change the expected build result based on the platform.
df4615e Add the COMPILER_HAS_DEPRECATED only if it has a declspec variant
78a6e1c Exclude the XL compiler from the hidden-visibility test.
e1f7ee3 Test for compiler features, instead of for specific platforms.
9554e10 Split the deprecated available check from setting macro values.
1590d5f Don't export methods on already exported classes.
750b67c Don't use hidden visibility on non-mingw windows either.
1f3be45 Make sure the hidden visibility variables never get set on MINGW.
399f415 Only set the deprecated attribute if hidden visibilty is enabled.
1c6b41b Remember to surround the other deprecated test in the Borland check.
3f7e036 Export deprecated free methods too.
7fa5592 Add some debug output to narrow down deprecation test issues
7924c1d Another attempt at fixing Borland.
50460ea Fix off-by-not in test for Borland.
b443459 Use the correct project name compiletest not compilefail
fc3772e Another attempt to fix the tests on Borland.
bab4a22 Disable all export macros on Borland.
cff9493 Only set the COMPILER_HAS_HIDDEN_VISIBILITY if GCC >= 4.2
af443b8 Set the CMAKE_RUNTIME_OUTPUT_DIRECTORY for windows builds.
61726f8 Only run the failure tests with gcc >= 4.2
002ddf2 Fix typo and tests failing as a result.
4443037 Fix tests with clang.
ffaa127 Test expected no-op instead of aborting the build.
6aca0e2 Short-circuit the tests on unsupported compilers.
d123bce Add some debug output.
3574b75 Simplify the compiler feature check
c7a937b Simplify. We already know we have hidden visibility at this point.
3b188c8 Test for features, not specific compilers.
4718233 Remove the fatal_warnings option which is no longer used.
b19911e Add missing licence header.
706ed2b Add a newline at the end of the file.
8963716 Add a newline at the end of the file.
def0a54 Handle the case where the user changes the DEFINE_SYMBOL property.
3088070 Add the GenerateExportMacro with unit tests.
FindBoost now attempts to find Boost using find_package(Boost NO_MODULE)
before it does a module mode search.
User can now set any of these to Boost's install prefix to detect it in module
or config mode:
- Boost_DIR for consistency with other CMake modules
- BOOST_ROOT or BOOSTROOT for adherence to boost convention
Define a "Fortran_FORMAT" target and source file property. Initialize
the target property from a "CMAKE_Fortran_FORMAT" variable. Interpret
values "FIXED" and "FREE" to indicate the source file format. Append
corresponding flags to the compiler command line.
- Build wasn't properly using -soname linker args, so installed libraries
could depend on relative paths from the build directory.
- Consolidated GNU linker args to one place in the BlueGeneP-base platform
file, since ld is used by both XL and GNU toolchains on BlueGene.
Linking broken on non-AIX machines when using XL compilers due to those
machines not using the CreateExportList tool. Made use of this tool
conditional on finding it.
59238dc Fix --find-package mode on Cygwin, where enable_language(RC) is called
98472e4 Require the current cmake version in --find-package mode
a6ccf3c Use $(CXXFLAGS) and $(LDFLAGS) in the --find-package test Makefile
4386918 Fix line length
7d69310 Only enable the test when using GNU make
3011149 Make the test harder by always having a space in the include dirs
ab57ff6 Make the --find-package test harder
626fc71 Much improved test, should now be executed on all UNIXes
ec6982d Disable any STATUS output in --find-package mode
e552ae7 Dont check for -isysroot and -mmacosx-version on OSX in --find-package mode
e589589 Rename helper macros print_compile_flags() to set_compile_flags_var()
aecfc1f Fix test on OpenBSD with BSD make
6bb4ca3 The makefile for the test was kindof wrong
fd15b5e Only run the test if we are using a makefile generator under UNIX
9fc87c6 Add a test for the new --find-package mode
d3ae0ff Improve documentation for --find-package mode
bf07375 Add a cmake.m4 for using cmake in autoconf projects instead of pkgconfig
b0e3578 Use the file-utility to test for 64bit if there is no /usr/lib64
53edfb2 Better support for lib64 and Debian multiarch
b8fdaa1 Fix copyright notice in new CMakeFindPackageMode.cmake
7690edf Replace cmake::GetScriptMode() with GetWorkingMode()
e4f603b Implement find-package mode of cmake
a91d662 Add find-package mode, which does nothing yet
b976e70 Make clLocalGenerator::GetTargetFlags() public
920a046 QtAutomoc: Eliminate compiler warning
b00463f QtAutomoc test: Pass QT_QMAKE_EXECUTABLE
e78ce44 Fix automoc with VS builds: apply patch from Bill
71165e9 Silence warning in automoc: use long instead of int
1879bcc Fix build: use std::ios::out|ios::trunc instead of std::ios_base::out
678e124 Only enable the automoc test after checking that Qt4 works
71c29d1 Fix bootstrap test with automoc
afb3edc Fix warnings
add30e9 Fix build: non-void function must return a value
7e6d845 Automoc.cmake is not needed anymore
2963d0b Fix logic which decides when to execute automoc test
77a5c6e Add documentation for AUTOMOC, add initialization via CMAKE_AUTOMOC
bf8ef77 Add a test for automoc
d045fd4 Nicer progress message for the automoc target
50cd6ce Move automoc processing from add_executable/library to cmGlobalGenerator
cbaac2a Remove trailing whitespace
c27607b Refactor SetupAutomocTarget() so it can be run after creating the target
24d9b7d Remove trailing whitespace
58b7fe6 Use cout instead of printf()
72caf4d Add the generated automoc.cpp file to the cleaned files
ddb517d Color output when running moc
9303295 Initialize verbose based onb the env.var.
ace1215 Move code for parsing a cpp-file from the big loop to separate function
735a5bb Fix line lengths
83b730c Add AUTOMOC to the add_library() command
126c6ea Add the cmake module required currently for automoc
de91feb Remove the need to check for .h/.cxx during buildtime
d65689a Add actual automoc code from automoc
d1c0a5f Start implementing skeleton for automoc in cmake
a65011b Start work on automoc: add empty cmQtAutomoc class
Fix problem exposed by recent commit to FindPythonInterp.
If the find "details" has new lines in it, then replace them
with literal "\n" two character sequences so that the string
may be saved as a cache entry that can be re-read next time
CMake runs.
Using the second mode of FIND_PACKAGE_HANDLE_STANDARD_ARGS allows for
checking the version number. Now a user can require a minimum version of
the python interpreter with find_package(PythonInterp VERSION)
The old approach to determine the python executeable chooses the newest
version from _Python_VERSIONS if no additonal versions are passed.
With python it is possible to install different versions side-by-side.
Therefore a user can install e.g. python 2.5 and 2.7. Python 2.7 maybe
only installed for testing new features and 2.5 for building and running
his software. Thus the default installation for the user would be python
2.5 and then returning PYTHON_EXECUTEABLE python2.7 would be wrong. The
new approuch searches first for the the default python executable e.g.
/usr/bin/python on unix and if it can't be found _Python_VERSIONS is
used.
In --find-package mode we can't enable a language, since a lot of
stuff has not been set up, e.g. which make tool to use.
So disable enable_language() in this mode.
Alex
The test "complex" sets the variable CMAKE_BACKWARDS_COMPATIBILITY
to 1.4. When that variable is set, configure_file does not default
to IMMEDIATE mode processing. And so, the output file likely does
not exist yet by the time the next line in the CMakeLists.txt file
is processed. When that next line is "try_compile" on that file,
this is a problem.
Fix the problem by explicitly using IMMEDIATE in the configure_file
call.
This problem was quite mysterious, as it only showed up on the
"complex" test, when the previous commit introduced a CheckSymbolExists
call into the FindThreads module. Which is not even explicitly included
in the "complex" test... FindThreads gets included indirectly only
as a side effect of setting CMAKE_BACKWARDS_COMPATIBILITY to 1.4 and
even then it's included indirectly by auto-inclusion of
CMakeBackwardCompatibilityC.cmake...
Wow. Just wow.
This fixes the problem that otherwise Platforms/CYGWIN.cmake doesn't
know whether it should set WIN32 or not.
Now it uses always the current behaviour.
Alex
QNX has the phtread stuff in the standard library. The best way would
IMHO be to check if a program that uses pthread_* can be successfully
linked without specifying any linker option before trying out the
different flags.
To support Intel Fortran, CMake started using devenv and VCExpress
for build tools with VS2010. However, VCExpress does not always work.
This change makes CMake use MSBuild when devenv is not found. This should
be OK, since Intel Fortran can not be used with VCExpress.
c9761de Improve documentation for WriteBasicConfigVersionFile.cmake
208bb90 Set UNSUITABLE instead of not COMPATIBLE
bb03c2d Really fix copyright notice
d50a61a Fix copyright notice
4ba09bc Add some tests for write_basic_config_version_file()
02b1e4b Add example to documentation
d216a67 Provide macro write_basic_config_version_file()
If CMAKE_SIZEOF_VOID_P is not set from the outside, it checks for the
existance of /usr/lib64, and if it exists, SIZEOF_VOID_P is set to 8.
For multiarch, if this is debian and
CMAKE_${LANGUAGE}_LANGUAGE_ARCHITECTURE has not been set, it globs
for the files in /lib, and uses the first one which matches
CMAKE_LIBRARY_ARCHITECTURE_REGEX.
Alex
Commit 6d434ee6 (Split XL compiler information files, 2009-09-30)
added Platform/AIX-(XL|VisualAge)-(C|CXX|Fortran).cmake modules
to support the old and new compiler branding for all languages.
Add the "AIX-VisualAge-Fortran" combination that was left out
accidentally.
e2e8c0a Also put builtin include dirs into CodeBlocks project file
92c0dc5 Remove useless line of code
a5683f8 Patch by Campbell Barton: puts definitions into C::B project file
81a70c6 Add basic version check for giflib
2462f65 FindGif: add giflib4 as one more name for the library under Windows
f97620e FindGIF/FindFreetype.cmake: remove standard search paths from find-calls
7c38523 Strip trailing whitespace
825c457 FindPostgreSQL: fix PATH_SUFFIXES, better output for FPHSA
e159bb5 Mark the results from find() as advanced
da1bdaf Use FPHSA(), remove unnecessary stuff and don't recommend link_directories()
217d068 More PATH_SUFFIXES for finding Postgresql and also search catalog/pg_type.h
b62349c FeatureSummary.cmake: update documentation
f366cf8 FeatureSummary.cmake: cosmetics
f407bb5 FeatureSummary.cmake: only higher TYPEs can override previous TYPEs
02d47ab FeatureSummary.cmake: error out when a REQUIRED package is missing
91a1527 FeatureSummary.cmake: add INCLUDE_QUIET_PACKAGES keyword
0671a02 FeatureSummary.cmake: remove "comment" field
aae13f4 Extend FeatureSummary: add PURPOSE of package and TYPE
Refactor code from CMakeFindEclipseCDT4.cmake so it can be used
alkso for CodeBlocks, and move it into new file
CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake.
Alex
This is used e.g. in KDE, there on Solaris an old version of giflib
was found (version 3), which could be detected by checking for the
UserData member variable:
http://websvn.kde.org/?view=revision&revision=545738
Alex
This macro can be used to generate basic version files which can be
installed along a Config.cmake file to provide versioning support.
This (3rd try) is implemented using a macro, which maps
the COMPATIBILITY mode to a filename and configure_file()s the
resulting file.
Alex
Fix NSIS template to more thoroughly use CPACK_PACKAGE_INSTALL_REGISTRY_KEY.
This allows different versions of software to have a separate sections in the
registry to keep track of things (installed components, and uninstall stuff).
Change default of CPACK_PACKAGE_INSTALL_REGISTRY_KEY to follow the value of
CPACK_PACKAGE_INSTALL_DIRECTORY so if an installation overwrites another installation,
the proper registry entries are more likely to be overwritten.
Fix CPack/NSIS generator to not insert code in the NSIS template to skip installation
of already installed components. This enables a repair like behavior and also enables
installing patch releases on top of an older installation.
Allows wlib to generate proper exports if two routines have
the same spelling, but different case (like Scale and scale).
Thanks to J Decker for the patch.
On Apple's gcc, the compiler emits a warning such as "warning: command
line option "-Wno-deprecated" is valid for C++/ObjC++ but not for C"
when it is passed that flag on its command line.
When testing for that flag with a plain C file, we should report that
the flag is unsupported for C files. The new FAIL_REGEX option added
here produces this behavior.
In both files find_path() and find_library() are called with multiple
additional search PATHS which are already anyway part of the default
search dirs, so it should be safe to remove them.
Alex
1417a55 Java: Fix documentation format and indentation
0b7627d Java: Use set_property/get_property for target variables.
b01a505 Java: Create correct jar archive dependencies.
f99c312 Java: Added some dependency magic to avoid recompilations.
f3233ba Java: Create java_class_filelist only if it does't exist.
a22ed3d Tests: Check for the new Java exeutable variables.
c177c8e Tests: Java tests should test UseJava.cmake
5c2106c Modules: Added CMake Java support.
a4b6275 FindJava: Find missing java development executables.
Now found packages are not stored in ENABLED/DISABLED_FEATURES
anymore, but always in PACKAGES_FOUND/NOT_FOUND.
ENABLED/DISABLED_FEATURES is now only used via
ADD_FEATURE_INFO(), e.g. for stuff set via option().
Alex
What was given as comment to set_package_info(), now goes into
the PURPOSE field. It was not clear what the comment should contain,
with the PURPOSE this is much clearer now.
Alex
With the PURPOSE a project can state what the package in question
is used for in the project (as opposed to describing what the package
does in general).
TYPE can be one of OPTIONAL (default)
RUNTIME - not needed for building, only at runtime
RECOMMENDED - as OPTIONAL, but you should really have it
REQUIRED - cmake will fail if one of these is not found
This can be set using the new function set_package_properties()
Alex
This patch adds two macros cmake_push_check_state() and
cmake_pop_check_state(), which can be used to save and restore
the contents of the CMAKE_REQUIRED_xxx variables.
Alex
In find-package mode, cmake executes Modules/CMakeFindPackage.cmake,
which calls find_package(), and this is then evaluated in cmake.cxx,
which prints an appropriate message to stdout, so it can be used
e.g. in a normal Makefile:
$ /opt/cmake-HEAD/bin/cmake --find-package -DNAME=JPEG
-DCOMPILER_ID=GNU -DLANGUAGE=C -DMODE=EXIST
JPEG found.
$ /opt/cmake-HEAD/bin/cmake --find-package -DNAME=JPEG
-DCOMPILER_ID=GNU -DLANGUAGE=C -DMODE=COMPILE
$ /opt/cmake-HEAD/bin/cmake --find-package -DNAME=JPEG
-DCOMPILER_ID=GNU -DLANGUAGE=C -DMODE=LINK
-rdynamic -ljpeg
Alex
This reverts commit 1088b0278e.
Wrapper dependency scanning (fix for #4147) does not work at CMake
configuration time if an input file is provided by a custom command
(regression #12307). Revert to original behavior until a solution is
found.
8555c2b Look for VCExpress as a possible build tool as well as devenv.
ed0075b Use relative paths for custom command inputs.
38368d5 Revert "With very long file names, VS 2010 was unable to compile files."
8cd66dc Use devenv instead of msbuild for vs2010.
If FindMPI can't interrogate any of the available compilers, it attempts to compile simple MPI
programs with CMAKE_${lang}_COMPILER. If this works, it uses that as MPI_${lang}_COMPILER.
This allows MPI to be discovered on Cray XT/XE systems, where modules are used and cc, CC, and ftn
compilers *are* MPI compilers.
Without this, regular swig (not 2.0) executable is not found
automatically.
Commit 55b7c87e (Add support for new swig 2.0 application, 2011-03-28)
added support for finding swig 2.0 at the (accidental) expense of not
finding 1.x. Fix this regression.
Patch from Aaron C. Meadows
Adds support for detecting VS 2010 SP1
Also improves performance using CMAKE_CXX_COMPILER if it is available
and for robustness falls back using try_compile() and try_run()
David Cole
Alex Neundorf
Mike McQuaid
Clinton Stimpson
Brad King
Eric NOULARD
Rolf Eike Beer
Modestas Vainius
Peter Kuemmel
Alexey Ozeritsky
Bill Hoffman
Nicolas Despres
Matthias Kretz
Philip Lowman
Peter Collingbourne
Mattias Helsing
Yury G. Kudryashov
Deborah Pickett
Christian Andersson
Michael Wild
Jason Erb
James Bigler
Tim Gallagher
Mathieu Malaterre
Pierre-Francois Laquerre
Stephen Kelly
Ondrej Balaz
Mateusz Loskot
Dan Kegel
Marcus D. Hanwell
Todd Gamblin
Andreas Schneider
David Faure
Björn Ricks
Will Dicharry
Arnaud Gelas
Aaron C. Meadows
Matej Hribernik
Julien Malik
Christoph Höger