Commit Graph

22 Commits

Author SHA1 Message Date
Brad King 180c60a86f Fix check for -isysroot on OS X
Previously we checked for this flag by parsing the version number of GCC
out of 'gcc --version', but this is not reliable because the format can
vary greatly.  Now we run 'gcc -v --help' and look for '-isysroot' in
the list of options.

We also now store the result on a per-language basis in the per-compiler
info file "CMake<LANG>Compiler.cmake".  This is necessary to make it
accessible from try-compile projects so that they generate correctly.
2009-09-19 10:14:31 -04:00
Brad King fcab87c9f8 Do not always propagate linker language preference
The commit "Consider link dependencies for link language" taught CMake
to propagate linker language preference from languages compiled into
libraries linked by a target.  It turns out this should only be done for
some languages, such as C++, because normally the language of the
program entry point (main) should be used.

We introduce variable CMAKE_<LANG>_LINKER_PREFERENCE_PROPAGATES to tell
CMake whether a language should propagate its linker preference across
targets.  Currently it is true only for C++.
2009-07-30 10:59:37 -04:00
Brad King 07ea19ad1f ENH: Implicit link info for C, CXX, and Fortran
This teaches CMake to detect implicit link information for C, C++, and
Fortran compilers.  We detect the implicit linker search directories and
implicit linker options for UNIX-like environments using verbose output
from compiler front-ends.  We store results in new variables called

  CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES
  CMAKE_<LANG>_IMPLICIT_LINK_DIRECTORIES

The implicit libraries can contain linker flags as well as library
names.
2009-07-23 10:07:25 -04:00
Brad King a28b197b11 ENH: Generalize the check for sizeof void* to detect more ABI information. 2008-01-21 18:30:17 -05:00
Alexander Neundorf 021ceea1b0 ENH: second try for handling the linker language with integer priority values (returning a pointer to a string on the stack is no good idea)
Alex
2007-07-12 08:37:10 -04:00
Alexander Neundorf 16705a3e87 COMP: revert last commit for now, broke Visual Studio
Alex
2007-07-11 17:29:27 -04:00
Alexander Neundorf bea1a5de77 ENH: CMAKE_<LANG>_LINKER_PREFERENCE is now an integer priority, not a
two-step priority (None or Prefered)
Current order: ASM 0, C 10, Fortran 20, CXX 30, Java 40
This is the same order as automake choses:
http://www.gnu.org/software/automake/manual/html_node/How-the-Linker-is-Chosen.html

This change should be backward compatible:
if there is a project using fortran and CXX, they had to set the
LINKER_LANGUAGE explicitely, otherwise cmake complained (but still generated
the project files). Explicitely setting the linker language still overrides
automatic detection.
If somebody has a custom language for cmake and the PREFERENCE starts with
"P", its changed to 100, which gives it preference over all other languages
(except the other custom languages which have also "Prefered"). "None" is
converted to 0.

Alex
2007-07-11 16:22:04 -04:00
Alexander Neundorf 422dc631b6 ENH: split cmGlobalGenerator::SetLanguageEnabled() in two parts, where the
second part copies the values from the cmake variables into internal maps.
So this can now be done after the compiler-specific information has been
loaded, which can now overwrite more settings.

Alex
2007-06-11 15:31:42 -04:00
Alexander Neundorf 61d3444f93 ENH: merge CMake-CrossCompileBasic to HEAD
-add a RESULT_VARIABLE to INCLUDE()
-add CMAKE_TOOLCHAIN_FILE for specifiying your (potentially crosscompiling) toolchain
-have TRY_RUN() complain if you try to use it in crosscompiling mode (which were compiled but cannot run on this system)
-use CMAKE_EXECUTABLE_SUFFIX in TRY_RUN(), probably TRY_RUN won't be able to
run the executables if they have a different suffix because they are
probably crosscompiled, but nevertheless it should be able to find them
-make several cmake variables presettable by the user: CMAKE_C/CXX_COMPILER, CMAKE_C/CXX_OUTPUT_EXTENSION, CMAKE_SYSTEM_NAME, CMAKE_SYSTEM_INFO_FILE
-support prefix for GNU toolchains (arm-elf-gcc, arm-elf-ar, arm-elf-strip etc.)
-move ranlib on OSX from the file command to a command in executed in cmake_install.cmake
-add support for stripping during install in cmake_install.cmake
-split out cl.cmake from Windows-cl.cmake, first (very incomplete) step to support MS crosscompiling tools
-remove stdio.h from the simple C program which checks if the compiler works, since this may not exist for some embedded platforms
-create a new CMakeFindBinUtils.cmake which collects the search fro ar, ranlib, strip, ld, link, install_name_tool and other tools like these
-add support for CMAKE_FIND_ROOT_PATH for all FIND_XXX commands, which is a
list of directories which will be prepended to all search directories, right
now as a cmake variable, turning it into a global cmake property may need
some more work
-remove cmTestTestHandler::TryExecutable(), it's unused
-split cmFileCommand::HandleInstall() into slightly smaller functions

Alex
2007-05-17 13:20:44 -04:00
Brad King eac71647dd ENH: Merging CompilerId implementation from branch CMake-Modules-CompilerId to the main tree. Changes between CMake-Modules-CompilerId-bp and CMake-Modules-CompilerId-mp1 are included. 2007-04-28 09:35:01 -04:00
Brad King b78d936ecf BUG: Need to duplicate some information from CMakeCCompiler to support C++-only projects. 2006-02-09 13:48:09 -05:00
Bill Hoffman aa98e3647d ENH: fix more than one argument passed in to compilers via environment 2006-01-25 11:41:05 -05:00
Bill Hoffman b8b298104b ENH: make sure flags set in CC or CXX environment variables stay with the compiler 2005-07-20 15:44:55 -04:00
Bill Hoffman f3f123fe46 FIX: fix bug 1495 2005-02-11 14:22:24 -05:00
Bill Hoffman 36dd18efce ENH: stuff to keep compiler tests from re-running all the time 2005-01-20 12:30:03 -05:00
Bill Hoffman e7bc462755 BUG: fix running of cl in trycompiles 2005-01-17 15:20:41 -05:00
Bill Hoffman 692ba48c4e ENH: major changes to support addition of languages from cmake modules directory. 2004-09-22 14:42:05 -04:00
Bill Hoffman c2ef51e181 ENH: define language extensions in cmake files and not hard coded, also fix trycompile problem 2004-09-03 12:03:41 -04:00
Bill Hoffman 89fe29a41a ENH: reduce the number of times gnu is tested for 2003-12-12 09:12:49 -05:00
Bill Hoffman d1051bb575 clean up flags with _init flags 2002-11-11 12:31:46 -05:00
Bill Hoffman f5d95fb078 Complete rework of makefile generators expect trouble 2002-11-08 15:46:08 -05:00
Bill Hoffman 56f2d45191 *** empty log message *** 2002-10-25 16:13:03 -04:00