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| author | Alex Neundorf <neundorf@kde.org> | 2013-02-16 17:45:41 +0100 |
|---|---|---|
| committer | Alex Neundorf <neundorf@kde.org> | 2013-02-16 17:45:41 +0100 |
| commit | 92ee4002ac7f2015797140fcf5944f219074972d (patch) | |
| tree | 40950db459b2ed0015467ebd6dd0a7a3e325ffd8 | |
| parent | c61a35fecca91cc83672000b375d57fd123c1165 (diff) | |
| download | extra-cmake-modules-92ee4002ac7f2015797140fcf5944f219074972d.tar.gz extra-cmake-modules-92ee4002ac7f2015797140fcf5944f219074972d.tar.bz2 | |
enable position independent code if required by Qt
This can be removed once we require cmake 2.8.11, then it will work
automatically.
Alex
| -rw-r--r-- | kde-modules/KDECompilerSettings.cmake | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/kde-modules/KDECompilerSettings.cmake b/kde-modules/KDECompilerSettings.cmake index 2311d30f..dde44674 100644 --- a/kde-modules/KDECompilerSettings.cmake +++ b/kde-modules/KDECompilerSettings.cmake @@ -1,9 +1,4 @@ -# This module provides the following options: -# KDE4_ENABLE_FPIE - if enabled, the KDE4_CXX_FPIE_FLAGS and KDE4_PIE_LDFLAGS variables is set accordingly -# # This module provides the following variables: -# KDE4_CXX_FPIE_FLAGS - the flag to be used for building PIE executables -# KDE4_PIE_LDFLAGS - the flag to be used by linking PIE executables # KDE4_ENABLE_EXCEPTIONS - use this to enable exceptions # # This module also sets up CMAKE_CXX_FLAGS for a set of predefined buildtypes @@ -35,12 +30,6 @@ include(CheckCXXCompilerFlag) include(GenerateExportHeader) -# Position-Independent-Executable is a feature of Binutils, Libc, and GCC that creates an executable -# which is something between a shared library and a normal executable. -# Programs compiled with these features appear as ?shared object? with the file command. -# info from "http://www.linuxfromscratch.org/~manuel/hlfs-book/glibc-2.4/chapter02/pie.html" -option(KDE4_ENABLE_FPIE "Enable platform supports PIE linking") - # TODO: what's up with this manifest stuff ? # setting the CMAKE_MODULE_PATH like this is definitely wrong. # FindKDEWin.cmake should probably come from ecm @@ -330,14 +319,14 @@ if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU") set (CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,--export-all-symbols -Wl,--disable-auto-import") endif () - check_cxx_compiler_flag(-fPIE __KDE_HAVE_FPIE_SUPPORT) - if(KDE4_ENABLE_FPIE) - if(__KDE_HAVE_FPIE_SUPPORT) - set (KDE4_CXX_FPIE_FLAGS "-fPIE") - set (KDE4_PIE_LDFLAGS "-pie") - else() + # TODO : with CMake 2.8.11 this can be removed, it will work automatically + if(Qt5_POSITION_INDEPENDENT_CODE) + check_cxx_compiler_flag(-fPIE __KDE_HAVE_FPIE_SUPPORT) + if(NOT __KDE_HAVE_FPIE_SUPPORT) + # Should we fail here ? message(STATUS "Your compiler doesn't support the PIE flag") endif() + set(CMAKE_POSITION_INDEPENDENT_CODE TRUE) endif() check_cxx_compiler_flag(-Woverloaded-virtual __KDE_HAVE_W_OVERLOADED_VIRTUAL) |