Since commit v3.1.0-rc1~564^2 (OS X: Use -iframework for system
framework directories, 2014-05-05) we test the version of Clang is smaller
that 3.1 to see if it supports -iframework.
Considering that "iframework" support has been added in clang@r142418
(Frontend: Support -iframework.) prior to clang 3.1, this made sense.
That said, considering that support for multiple -iframework parameters
has been added later in clang@r164607 (-iframework should allow separate
arguments. ) prior to clang 3.2, this commit updates the check to enable
framework support only if version is >= 3.2
We originally deprecated this module in commit v3.5.0-rc1~295^2
(CMakeForceCompiler: Deprecate this module and its macros, 2015-10-19).
Then a use case was found to still require the module so the deprecation
was reverted for CMake 3.5 by commit v3.5.0-rc3~4^2 (CMakeForceCompiler:
De-deprecate until more use cases have alternatives, 2016-02-17). Since
then `CMAKE_TRY_COMPILE_TARGET_TYPE` was introduced to provide an
alternative solution for that use case. Deprecate the module again.
Canonicalize the input paths so we treat them both consistently,
in particular when comparing them via string operations. This
is needed for calls like
fixup_bundle("${CMAKE_INSTALL_PREFIX}/../test" ...)
Suggested-by: Benjamin Ballet <bballet@ivsweb.com>
Use recommended case for variable names. i.e. matching name of the
module as passed to `find_package`.
For backwards compatibility, the upper case versions of both input and
output variables are used and defined when appropriate. Skip this for
the _FOUND variable because FPHSA already does it. Skip this for the
_VERSION variable because that was recently added and never available
with the old name in a release of CMake.
Also detect the library version number. Provide results as variables
and as an imported target, LTTng::UST.
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
When we check for a working compiler we print a message of the form:
Check for working <LANG> compiler: ...
At one time CMAKE_<LANG>_COMPILER was not well-defined for all
generators so we printed the generator name instead of the path to
the compiler. Nowadays we always know the compiler, so update the
message to print it unconditionally. This is more informative than
the generator name, especially when a toolset (cmake -T) is used.
Suggested-by: Gregor Jasny <gjasny@googlemail.com>
This is done the same way as for Eclipse: cmake tries to determine
the number of CPUs, and then adds the respective -jN to the make
invocations in the project file.
Alex
If CMAKE_INSTALL_RPATH is set and contains $ORIGIN then
dpkg-shlibdeps searches for the DEBIAN directory in order
to resolve $ORIGIN in the rpath to a directory. We need to
create the DEBIAN directory for this to work.
Since commit v3.5.0-rc1~47^2 (FindCUDA: Support special characters in
path, 2016-01-15) our add_custom_command calls use VERBATIM so that
CMake will automatically quote special characters correctly. However,
this breaks the special `$(VCInstallDir)` placeholder used with Visual
Studio generators. Since we do not support preservation of such
placeholders with VERBATIM (see issue #15001) we must fall back to not
using VERBATIM when the placeholder is used.
A better fix would be to stop using `$(VCInstallDir)` and use the value
of `CMAKE_${CUDA_C_OR_CXX}_COMPILER` instead, but that will require
additional semantic and documentation changes. For now simply fix the
regression with the above approach.
Reported-by: Stephen Sorley <Stephen.Sorley@jhuapl.edu>
We deprecated this module in commit v3.5.0-rc1~295^2
(CMakeForceCompiler: Deprecate this module and its macros, 2015-10-19)
in order to determine whether anyone still has use cases that require
it. Indeed we still need to provide a way to work with toolchains that
cannot link binaries without special flags. Remove the deprecation
warnings until we can provide an alternative to the module for this use
case.
We use `sh wx-config` to launch the `wx-config` tool so that it can run
even on Windows. Since it is always a shell script its output may use
POSIX paths even on Windows. Use `cygpath` to convert to Windows paths.
Check found libraries version to match user required version.
Protobuf compiler executable version is checked to be aligned with found
libraries, raising a warning message otherwise.
CPACK_* variables expect component name in upper case.
CPACK_RPM_* variables expected component name to be
in same case as component name.
This patch adds support for CPACK_RPM_* variables with
upper case component names to match the convention with
CPACK_* variables and also preserves same case component
names for back compatibility.
The specific cause is when e.g.
/Library/Frameworks/GStreamer.framework/Versions/1.0/lib/libgio-2.0.0.dylib
is detected by fixup_bundle. set_bundle_key_values() interprets this as
a framework, thus doing a string replace that creates an embedded_item
that is equal to the original path, i.e. it is not embedded.
Before this change, the variable PROTOBUF_LIBRARIES might get redundant
value for debug and optimized configurations, e.g.
`optimized;/usr/lib/libprotobuf.so;debug;/usr/lib/libprotobuf.so`.
Some projects may want to use the detailed mangling information
directly instead of using the FortranCInterface_HEADER function.
We already provide variables encoding the mangling information,
so just document them as available.
This commit introduces two new options to CTestCoverageCollectGCOV.
When GLOB is set we recursively search in the source & binary
directories for .gcda files. Otherwise the default behavior is to
parse TargetDirectories.txt for a list of locations to search.
When DELETE is set we remove any .gcda file found after it has
been used to generate the corresponding .gcov file. The .gcov
file is also removed after the result tarball has been created.
Together these two new features help support the use case of
computing coverage across subprojects.
81ecc726 FindCUDA: Added some additional comments about non-existent dependency files.
4b561b4c FindCUDA: Fix for when a non-existent dependency file is found.
Due to #4662 -isystem support was disabled for all GNU Compilers
on Apple platforms. But the change was probably a just work around
for a broken compiler on Tiger (see 10837#c27206). So we tighten
the condition to only kick in for GCC versions earlier than 4.
That should ensure sane behavior for Xcode 3.2 and later.
Previously if a non-existent dependency file is found we set the file to "" and
then do if(NOT IS_DIRECTORY "${file}"). Later we call get_filename_component
on the empty file which returns basically the current build directory.
Having a dependency on the current build directory is really annoying, because
anything that compiles into that directory will change the file stamp and
cause your files to rebuild every time you call make. :(
Since commit v3.5.0-rc1~32^2~1 (ExternalProject: Simplify `cmake
--build` configuration passing, 2016-01-19) we use the `$<CONFIG>`
generator expression to generate the `cmake --build . --config <config>`
value for the default BUILD_COMMAND instead of the CMAKE_CFG_INTDIR
placeholder value provided by multi-config generators. However, some
projects have been abusing the old implementation detail by setting
CMAKE_CFG_INTDIR themselves to get a specific configuration. Those
projects should be updated to set their own BUILD_COMMAND to get
non-default behavior. Meanwhile we can be compatible with their
existing releases by detecting when CMAKE_CFG_INTDIR is not a
generator-provided placeholder and using its value instead.
The dependency flags require recent versions of `iccarm` and `iccavr`.
The multi-rule dependency generated with `--dependencies=m` does not
work well with Ninja, so use `--dependencies=ns` instead.
Imported targets are now the recommended way of dealing with external
library dependencies. Add one for FindPNG and update documentation
accordingly. Also add a test case activated by CMake_TEST_FindPNG.
Check CMAKE_CONFIGURATION_TYPES instead of CMAKE_CFG_INTDIR in order
to recognize multi-config generators. Then use $<CONFIG> to pass
the configuration value.
The original value is saved in `_pkg_config_path_old`. Fix this typo
left by commit v3.1.0-rc1~763^2 (FindPkgConfig: Extend PKG_CONFIG_PATH
using CMake variables, 2014-03-06).
In Modules/Platform/WindowsPaths.cmake our previously recorded
environment variable combinations no longer seem to be correct. For
example, a 64-bit cmake binary may see ProgramW6432 in the environment
and end up not considering the "ProgramFiles(x86)" variable. Instead
check for all possible environment variables in the preferred order and
then remove duplicates.
Reported-by: Shawn Waldon <shawn.waldon@kitware.com>
Add `VERBATIM` to all `add_custom_command` calls so that CMake will
escape arguments properly even when special characters such as "()" are
present.
Suggested-by: Nils Gladitz <nilsgladitz@gmail.com>
Most packages install their .pc files into PREFIX/lib/pkgconfig, but
some put them into PREFIX/share/pkgconfig. Either is valid, and
pkg-config itself looks in both for the /usr and /usr/local prefixes.
This fixes an issue where some packages (yajl, for example) are not
found if they are installed into a non-standard prefix and
CMAKE_PREFIX_PATH is used to locate them.
This improvement to the FindDCMTK module improves compatibility with recent
DCMTK, which provides a DCMTKConfig.cmake file. See the module comments for a
compatibility matrix.
It also provides DCMTK_INCLUDE_DIRS.
Ported from CommonTK (commontk.org).
This was added by commit v2.8.0~2292 (... Set variable
wxWidgets_INCLUDE_DIRS_NO_SYSTEM on the Mac ..., 2008-04-16) and updated
by commit v2.8.9~183^2 (FindwxWidgets: Do not use -isystem on OpenBSD,
2012-05-14). Since the underlying cause was never investigated fully we
do not know the conditions under which -isystem breaks wxWidgets, but
suppressing -isystem is problematic for users that do not want to see
warnings in wxWidgets headers. Simply drop the special case for now so
we can see whether anyone hits the problem again, at which point it can
be investigated in more detail.
Reported-by: Simon Wells <swel024@gmail.com>
Drop the 'UNIX' condition on Clang compiler features. This enables
use of compile features with MinGW Clang, though additional work may
be needed for clang-cl.
The if(STREQUAL) expressions do not support globbing expressions.
Use regular experssions with MATCHES instead.
Reported-by: Yahui Wang <youngqv@foxmail.com>
VS expects the platform to be just `Itanium`, so drop the incorrect
special case mapping it to `ia64`. This platform name has been wrong
since the logic was added by commit v2.8.10~148^2~8 (VS: Detect the
compiler id and tool location, 2012-08-16).
24cdb9df CMake: Mimic NSIS options dialog in WiX installer
de77d4a7 CPackWIX: Allow multiple patch files and diagnose if any are missing
38d723b3 CPackWIX: Allow patching of shortcut components
When parsing implicit include dirs, link dirs, and link libs, all
arguments are resolved to absolute paths instead of relative paths.
This is correct for link and include directories but link libraries
should only include the library name, not it's path.
The `otool` command may return multiple RPATH entires, so call
`gp_append_unique` for each one. Otherwise we may try to ask
`install_name_tool` to deal with the same entry twice.
Implement a native `cmake_parse_arguments` command that is fully
compatible with the documented behaviour of the previous implementation.
Leave the CMakeParseArguments module empty but existing for
compatibility.
CPACK_WIX_PATCH_FILE now accepts a list of patch files.
An error will now be produced if any of the patch files is missing.
Previously this would be silently ignored.
CMake had been setting OPENGL_glu_LIBRARY to AGL.framework, even
though AGL is not GLU. AGL is simply the GL component for the
deprecated Carbon framework. GLU is provided by OpenGL.framework.
A side effect of the old behavior was that if AGL was not found
(it is absent from OS X SDK 10.10 or later), then OPENGL_GLU_FOUND
would be incorrectly set to "NO".
All other modules use their module name (e.g. XxX for FindXxX.cmake) in
find_package_handle_standard_args. Protobuf used all-caps, which triggers
a bug when we try to find Protobuf with the CMakeFindDependencyMacro.cmake
macro, which only checks for the mixed-case _FOUND.
The CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS setting has always been meant
for flags needed to export symbols from executables for use by shared
library plugins. Since commit v3.4.0-rc1~58^2~1 (CMP0065: Restrict the
use of CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS, 2015-08-24) this is made
explicit by using the flags only for executables with ENABLE_EXPORTS,
guarded by CMP0065 for compatibility.
On some platforms we were accidentally using this setting to pass other
flags to the linker:
* AIX: -bnoipath, -brtl
* HP-UX: +s, +nodefaultrpath
These flags are incorrectly dropped when CMP0065 is set to NEW. Fix
this by moving the flags to more appropriate places for linking
executables.
This patch solves the problem of installing both: Device and Simulator
libraries on iOS. Before only one of them was installed.
If the IOS_INSTALL_COMBINED property is set on a target, a
special install hook will be activated which builds the corresponding
target and combines both at the install location.
The original patch was contributed by Ruslan Baratov, and polished by
Gregor Jasny.
Some OpenAL implementations on Windows provide both Win32 and Win64
binaries. Search the location of the matching architecture.
Author: George "Zogzer@GitHub" <insertlogic@gmail.com>
This is an extensive refactoring of the Cray compiler wrapper usage.
Using the new compiler wrapper checks, the CrayPrgEnv info files have
been moved from Platform/ to Compiler/. The adjusted naming convention
allows the compiler-wrapper information files to be loaded for both the
CrayLinuxEnvironment platform when cross-compiling and the Linux
platform if building natively on the Cray compute nodes. It also
creates a separation of common arguments for compiler id and language
information used to perform the appropriate introspection of implicit
arguments and libraries used by the compiler wrappers based on the
loaded module environment.
- Add TIFF::TIFF imported target
- Document imported target
- Add testcase to test the standard variables and the imported
target
Also:
- Add TIFF_INCLUDE_DIRS to match common practice
- Update documentation generally, including documenting
TIFF_INCLUDE_DIRS
7a327727 Embarcadero: Fix erroneous interpretation of __CODEGEARC_VERSION__.
25211d75 Compiler ID: Compiler versions must be a valid, numeric version string.
060442c2 Embarcadero: Check code using CMAKE_CXX_COMPILER_ID and CMAKE_C_COMPILER_ID.
f3b3219c Embarcadero/Watcom: Properly skip VSResource test for other generators.
ddbda722 Embarcadero: Fix bug where duplicate Ninja job pools would be created.
As per the following link:
http://docwiki.embarcadero.com/RADStudio/Seattle/en/Example_of_CODEGEARC_VERSION_Macro
The major/minor versions must be decoded as a hex string, while the patch
version must be decoded as a normal decimal string.
As an example, C++ Builder XE 8.1's bcc32.exe sets this macro to 0x070189C9.
The file version of bcc32.exe is 7.1.5570.35273. Therefore, the correct
interpretation to COMPILER_VERSION would be 7.1.35273.
The CMAKE_CXX_COMPILER_ID and CMAKE_C_COMPILER_ID variables are set to
"Borland" for older versions of the compiler. Newer CodeGear/Embarcadero
compilers will have those variables set to "Embarcadero". Search for lines of
code referencing both the variable name and Borland to be sure that they also
refer to Embarcadero.
Fix typos introduced by commit v3.4.0-rc1~257^2~2 (FindJava: Add support
for idlj and jarsigner tools, 2015-07-31) to correctly report when these
components are found.
The function _Boost_MISSING_DEPENDENCIES will look at the
user-supplied component list, check the dependency
information for each component using
_Boost_COMPONENT_DEPENDENCIES, and will add any missing
dependencies to the component list. This ensures that
all required components will be searched for.
The function _Boost_COMPONENT_DEPENDENCIES is used to query the
library dependencies for a given component for a given version of
Boost. This covers Boost releases from 1.33 to 1.59, using the
information generated by Utilities/Scripts/BoostScanDeps.cmake.
When both CPACK_DMG_SLA_DIR and CPACK_RESOURCE_FILE_LICENSE are defined,
use the license file for all languages instead of looking for a license
file for each language. Also expand the documentation on the SLA
variables.
In commit v3.4.0-rc1~18^2 (Disable shared library support when compiler
links statically, 2015-09-30) we tried to detect when the compiler is
not capable of linking shared libraries (possibly due to flags in use).
However, the approach is not robust against flags like `-nostdlib`.
Revert it for now pending another solution to the original problem.
Prior to commit v3.4.0-rc1~71^2 (Project: Determine default language
dialect for the compiler, 2015-09-15) we always guessed the default
language standard dialect based on the compiler version. This was not
reliable so that commit switched to computing the default language
standard dialect while detecting the compiler id.
When a toolchain file uses CMakeForceCompiler to set the compiler id
then the detection does not occur. Therefore commit v3.4.0-rc1~54^2
(Project: Don't require computed default dialect if compiler was forced,
2015-09-22) made the lack of detection an error only if the compiler was
not forced. However, this means that projects using CMakeForceCompiler
no longer even get the guess that we had before so <LANG>_COMPILER does
not work.
Due to the sophistication of CMake's compiler detection logic projects
should be ported away from using CMakeForceCompiler. In the meantime,
restore a guess of the default language standard dialect when the
compiler is forced.
In commit v3.4.0-rc1~71^2 (Project: Determine default language dialect
for the compiler, 2015-09-15) we added an "INFO:..." string to the
compiler id detection binary. The value can be optimized out of the
compiler id binary unless we force it to be included by making the
program behavior depend on it at runtime. Add references to the value
as we do for the other info strings already.
Gentoo-Issue: https://bugs.gentoo.org/show_bug.cgi?id=565744
Our CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES setting is no longer needed
because CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES is now populated with the
actual implicit link directories for the current toolchain. The old
values we hard-coded in CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES are not
relevant to modern toolchains, so simply drop them.
Co-Author: Shawn Walker-Salas <shawn.walker@oracle.com>
4bca9401 Improve appearance of CMake .dmg package on OS X
c4b9ee18 CPack/DragNDrop: Update documentation to include new variables
167a4655 CPack/DragNDrop: Optionally run an AppleScript when making a package
9c1dfbfd CPack/DragNDrop: Place the background image file in a hidden folder
47302038 CPack/DragNDrop: Use source file extension for background image
We already recognize the Cray Fortran compiler id. Extract the version
number using the same predefined macros we already use for Cray C and
C++ compilers.
04a2a923 Help: Add notes for topic 'cpack-deb-new-component-vars'
57672e72 CPackDeb: CPACK_DEBIAN_PACKAGE_NAME documentation improvement
a45a4b2d CPackDeb: set package control field per component
a60574f1 CPackDeb: set priority control field per component
24012e3c CPackDeb: additional CPACK_DEBIAN_PACKAGE_SECTION documentation
47182ab8 CPackDeb: set section control field per component
Also add GTK2_TARGETS variable containing all imported targets.
Previously, the GTK2_LIBRARIES variable was filled with the paths to the
libraries, and only the GTK2_XXX_LIBRARY variables contained the imported
targets.
Multiple languages for SLAs and the SLA UI can be added via the CPack
variables CPACK_DMG_SLA_DIR and CPACK_DMG_SLA_LANGUAGES. For each
language defined in the languages variable, CPack will search for
<language>.menu.txt and <language>.license.txt in CPACK_DMG_SLA_DIR.
If the sla directory variable is not defined, the old behaviour using
CPACK_RESOURCE_FILE_LICENSE is retained.
There is the global CMAKE_DL_LIBS setting which can be used instead. There are
even platforms where this is either empty because those functions are part of
the libc or is called entirely different, so this code wouldn't work reliable
anyway.
In some cases, CMake returned the following error:
-- Checking for module 'foo'
-- Package 'foo' not found
When the actual error returned by pkg-config was:
Package 'bar', required by 'foo', not found
Now, the actual error is forwarded to the user.
-- Checking for module 'foo'
-- Package 'bar', required by 'foo', not found
For the standard case (i.e. the package was indeed not found), the
CMake error was:
-- Checking for module 'foo'
-- Package 'foo' not found
But it now prints:
-- Checking for module 'foo'
-- No package 'foo' found
The associated test was also updated. ${last} refers to the last
CLI argument.
We support setting CMAKE_OSX_SYSROOT to a symbolic value like "macosx".
Modules/Platform/Darwin-Initialize.cmake takes care of finding the
actual SDK path on disk. Use that result to set CPACK_OSX_SYSROOT
instead.
Set variables in the platform information modules to tell the Ninja
generator what deps type to use instead of hard-coding conditions in the
generator itself.
This module was added by commit v2.6.0~1489 (...supporting embedded
compilers..., 2007-07-02) to avoid needing to build the compiler id
detection source on toolchains that need special flags or linker files
to produce executables. Since then CMake has learned other ways to
identify such compilers (e.g. passing vendor-specific version flags and
checking for vendor-specific banners in the output). Furthermore, CMake
now detects a lot more than just the compiler id during language
initialization in order to support things like <LANG>_STANDARD and
COMPILE_FEATURES. Therefore CMakeForceCompiler is no longer a viable
approach because it skips such detection.
One remaining challenge to support toolchains that require special
linker files is to build the test for a working compiler, compiler ABI
detection binary, and other try_compile cases. This will have to be
worked out as such cases are encountered.
Unset CMAKE_MODULE_PATH before calling find_package(Git) to ensure we do
not get a project-provided FindGit module that may not provide the
GIT_VERSION_STRING that we need. We do not need to restore the value
explicitly because this occurs inside the _ep_add_download_command
function call scope.
Refactoring in commit v3.4.0-rc1~77^2~1 (ExternalProject: Use
GIT_VERSION_STRING instead of custom method, 2015-09-17) forgot
to update the variable name used in an error message.
If the automatically selected SDK is newer than the host OS version
and no deployment version has been set then adjust the deployment
version to the host OS version. Otherwise the user won't be able to
launch the executables on the build host.
This is for example a problem on a MacOSX 10.10 host with Xcode 7
which only provides a MacOSX10.11 SDK.
Starting with sigc++ 2.5.1, c++11 must be enabled in order to use
sigc++. The GTK2::sigc++ imported target will automatically enable the
required build flags in order to build with the version found on the
system.
1bf66fed FindOpenSSL: Search for unix-named libraries first on MinGW (#15765)
6b575dec FindOpenSSL: Tolerate tabs in header while parsing version (#15765)
Revert commit v3.4.0-rc1~10^2~2 (Features: Disable support for Oracle
SolarisStudio on non-Linux, 2015-09-29) and two follow-up commits.
The support of compile features and language standards on Orcale
SolarisStudio needs more investigation so for CMake 3.4 we should
just act as 3.3 did.
Generalize the change made by commit v2.8.10~228^2~4 (FindOpenSSL: find
cross-compiled OpenSSL from MinGW, 2012-07-23) to be used on builds
hosted on Windows too. When building for MinGW, consider library names
that come with MinGW before looking for the main Windows distribution of
OpenSSL.
2402bb8c Help: Document Windows 10 Universal Applications in cmake-toolchains(7)
1be2f12c VS: Add support for Windows 10 Universal (Store) Applications
2798dbda VS: Refactor indentation of LinkLibraryDependencies
8c426183 MSVC: Add system libs for WindowsStore on VS 2015
d1b87d72 VS: Select Windows 10 Store SDK and toolset for VS 2015
5fdf7594 Tests: Suppress WriteCompilerDetectionHeader failure on SunPro
c824b23d Features: Fix C++98 flags on Oracle SolarisStudio 12.4 on Linux
61bc0f73 Features: Disable support for Oracle SolarisStudio on non-Linux
3f077996 VS: Add support for selecting the Windows 10 SDK (#15670)
5dfc4c5f VS: Add hook to initialize Windows platform settings
61c472a2 cmSystemTools: Add VersionCompareGreater helper
Teach the VS 2015 generator to produce a WindowsTargetPlatformVersion
value. Use the CMAKE_SYSTEM_VERSION to specify the version and if not
set choose a default based on available SDKs. Activate this behavior
when targeting Windows 10.
Co-Author: Brad King <brad.king@kitware.com>
Teach CMakeDetermineSystem to check for a CMAKE_SYSTEM_VERSION setting
even when CMAKE_SYSTEM_NAME is not set. This will allow builds on the
host OS to target other versions of the OS without full cross-compiling.
When a user or a compiler wrapper adds '-static' to the compiler flags
then it will always link static binaries. Detect this from the compiler
id binary and disable TARGET_SUPPORTS_SHARED_LIBS. This will prevent
projects from accidentally adding shared libraries when the toolchain
does not support them. It also helps CMake avoid linking with flags
that require shared libraries to be supported.
On SunOS the -std=c++11 flag must be used for linking as well as
compiling. Until we implement support for this we cannot support
the CXX_STANDARD property except on Linux (where it was tested).
The latter is now the preferred URL for visiting cmake.org with a
browser. Convert using the shell code:
git ls-files -z | xargs -0 sed -i 's|http://www\.cmake|https://cmake|g'
fff9434d FindThreads: officially announce it works with only C++ enabled
66db914a FindThreads: fix printing a pointer value in test code
0b38424c FindThreads: make the call to try_run() work also if only C++ is enabled
9924a212 FindThreads: replace CheckIncludeFiles by CheckIncludeFile
a27bc0cc Check(Function|Library|Symbol)Exists: make it work if only C++ is enabled
7279f293 FindThreads: add simple testcase
This causes a warning in C mode, and entirely fails in C++ mode:
CMake/Modules/CheckForPthreads.c: In function ‘runner’:
CMake/Modules/CheckForPthreads.c:34:27: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
printf("%d CC: %d\n", (int)args, cc);
^
Use %p to print out a pointer value, which will not cause any problems.
While at it, also add a branch using CheckIncludeFileCXX. Also give a better
error message if no supported language is enabled. C++ support isn't working
yet, but it has never worked.
Commit 7235334a (Project: Determine default language dialect for the
compiler., 2015-09-15) introduced a mechanism to determine the default
dialect used for the running compiler. If conditions in
the <CompilerId>-<Lang>.cmake file are such that compile features for
that version of the compiler should be supported, the _DEFAULT_STANDARD
is set to the computed value.
However, the CMakeForceCompiler module allows users to bypass execution of the
compiler by CMake. In that case, do not set the _DEFAULT_STANDARD variable at
all, which effectively disables the compile-features where the module is used.
No compile features have ever been recorded where the module is used so no
functionality is lost.
Mariusz Pluciński
Brad King
O. Libre
Jean-Christophe Fillion-Robin
Antonio Perez Barrero
Philippe Proulx
Clinton Stimpson
Marc Chevrier
Alex Neundorf
Florian Apolloner and John Knottenbelt
Wayne Stambaugh
Domen Vrankar
Christian Askeland
Zack Galbreath
James Bigler
Gregor Jasny
Juhani Simola
Christoph Grüninger
Sergei Nikulov
Sam Thursfield
Ben Boeckel
Roger Leigh
André Klitzing
Rob Gowin
Adam Rankin
Matt McCormick
Chuck Atkins
Emilie Harquel
Matthias Maennich
Nils Gladitz
David Gobbi
Sebastian Schuberth
Roger Leigh
Ruslan Baratov
Chris Pavlina
Markus Rickert
James Johnston
Simon Levermann
Alexander Szakaly
Roger Leigh
April Chin
Robert Maynard
Daniele E. Domenichelli
Simon Levermann
Raffi Enficiaud
Rolf Eike Beer
Joakim Andersson
Benjamin Chrétien
Chris Davies
Kevin Wojniak
Tamar Kranenburg
Wayne Stambaugh
Terrell Russell
Colin Tracey
Thijs Wenker
Francesco Romano
Gilles Khouzam
Stephen Kelly
Ben Boeckel