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| author | Stephen Kelly <steveire@gmail.com> | 2012-05-05 19:11:35 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2012-06-12 19:37:53 (GMT) |
| commit | 31d7a0f2e3a717435da9660bcb2c23654171afda (patch) | |
| tree | e181c6d1cf90af21d9a06b31d511f2d20aff8600 /Modules/Compiler/GNU.cmake | |
| parent | 1ccbfdebb99b167e1da1d9aa8a072adaea6325c6 (diff) | |
| download | CMake-31d7a0f2e3a717435da9660bcb2c23654171afda.zip CMake-31d7a0f2e3a717435da9660bcb2c23654171afda.tar.gz CMake-31d7a0f2e3a717435da9660bcb2c23654171afda.tar.bz2 | |
Add platform variables for position independent code flags
Store in new platform variables
CMAKE_${lang}_COMPILE_OPTIONS_PIC
CMAKE_${lang}_COMPILE_OPTIONS_PIE
flags for position independent code generation.
In almost all cases, this means duplication of the
CMAKE_SHARED_LIBRARY_${lang}_FLAGS for the _PIC case and using the
assumed pie equivalent for the _PIE case. Note that the GNU compiler
has supported -fPIE since 3.4 and that there is no -fPIC on GNU for
Windows or Cygwin.
There is a possibility that the _PIE variables are not correct.
However, as there is no backwards compatibility to be concerned about
(as the POSITION_INDEPENDENT_CODE property is not used anywhere yet),
the current state suffices.
Diffstat (limited to 'Modules/Compiler/GNU.cmake')
| -rw-r--r-- | Modules/Compiler/GNU.cmake | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Modules/Compiler/GNU.cmake b/Modules/Compiler/GNU.cmake index c74c179..6aecf90 100644 --- a/Modules/Compiler/GNU.cmake +++ b/Modules/Compiler/GNU.cmake @@ -21,6 +21,10 @@ set(__COMPILER_GNU 1) macro(__compiler_gnu lang) # Feature flags. set(CMAKE_${lang}_VERBOSE_FLAG "-v") + set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC") + if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4) + set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE") + endif() set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC") set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared") |