From 56191830cdad9cbaa81c2ed8f22f1b2650a5608a Mon Sep 17 00:00:00 2001 From: Marius Storm-Olsen Date: Wed, 13 May 2009 13:58:18 +0200 Subject: Turn off Link Time Code Generation (/LTCG) by default Turning on LTCG affected too many projects, where customers applications would take a long time linking, severly affecting their development time (even though it was only added for release builds) We turn it off by default, and add a -ltcg configuration option, and the possibility to also do CONFIG+=ltcg in projects, should they not want it for Qt, but in their own projects. (Same, they can build Qt with it, and do CONFIG-=ltcg for their project) Reviewed-by: andy --- configure.exe | Bin 860160 -> 856064 bytes mkspecs/features/win32/ltcg.prf | 5 +++++ mkspecs/win32-msvc2005/qmake.conf | 7 +++++-- mkspecs/win32-msvc2008/qmake.conf | 7 +++++-- tools/configure/configureapp.cpp | 13 +++++++++++++ 5 files changed, 28 insertions(+), 4 deletions(-) create mode 100644 mkspecs/features/win32/ltcg.prf diff --git a/configure.exe b/configure.exe index ff71f08..40843b4 100644 Binary files a/configure.exe and b/configure.exe differ diff --git a/mkspecs/features/win32/ltcg.prf b/mkspecs/features/win32/ltcg.prf new file mode 100644 index 0000000..f6f1299 --- /dev/null +++ b/mkspecs/features/win32/ltcg.prf @@ -0,0 +1,5 @@ +CONFIG(release, debug|release) { + QMAKE_CFLAGS *= $$QMAKE_CFLAGS_LTCG + QMAKE_CXXFLAGS *= $$QMAKE_CXXFLAGS_LTCG + QMAKE_LFLAGS *= $$QMAKE_LFLAGS_LTCG +} diff --git a/mkspecs/win32-msvc2005/qmake.conf b/mkspecs/win32-msvc2005/qmake.conf index 00287cb..5ed8e01 100644 --- a/mkspecs/win32-msvc2005/qmake.conf +++ b/mkspecs/win32-msvc2005/qmake.conf @@ -19,9 +19,10 @@ QMAKE_YACCFLAGS = -d QMAKE_CFLAGS = -nologo -Zm200 -Zc:wchar_t- QMAKE_CFLAGS_WARN_ON = -W3 QMAKE_CFLAGS_WARN_OFF = -W0 -QMAKE_CFLAGS_RELEASE = -O2 -MD -GL +QMAKE_CFLAGS_RELEASE = -O2 -MD QMAKE_CFLAGS_DEBUG = -Zi -MDd QMAKE_CFLAGS_YACC = +QMAKE_CFLAGS_LTCG = -GL QMAKE_CXX = $$QMAKE_CC QMAKE_CXXFLAGS = $$QMAKE_CFLAGS @@ -30,6 +31,7 @@ QMAKE_CXXFLAGS_WARN_OFF = $$QMAKE_CFLAGS_WARN_OFF QMAKE_CXXFLAGS_RELEASE = $$QMAKE_CFLAGS_RELEASE QMAKE_CXXFLAGS_DEBUG = $$QMAKE_CFLAGS_DEBUG QMAKE_CXXFLAGS_YACC = $$QMAKE_CFLAGS_YACC +QMAKE_CXXFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG QMAKE_CXXFLAGS_STL_ON = -EHsc QMAKE_CXXFLAGS_STL_OFF = QMAKE_CXXFLAGS_RTTI_ON = -GR @@ -50,11 +52,12 @@ QMAKE_RUN_CXX_IMP_BATCH = $(CXX) -c $(CXXFLAGS) $(INCPATH) -Fo$@ @<< QMAKE_LINK = link QMAKE_LFLAGS = /NOLOGO -QMAKE_LFLAGS_RELEASE = /INCREMENTAL:NO /LTCG +QMAKE_LFLAGS_RELEASE = /INCREMENTAL:NO QMAKE_LFLAGS_DEBUG = /DEBUG QMAKE_LFLAGS_CONSOLE = /SUBSYSTEM:CONSOLE QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS \"/MANIFESTDEPENDENCY:type=\'win32\' name=\'Microsoft.Windows.Common-Controls\' version=\'6.0.0.0\' publicKeyToken=\'6595b64144ccf1df\' language=\'*\' processorArchitecture=\'*\'\" QMAKE_LFLAGS_DLL = /DLL +QMAKE_LFLAGS_LTCG = /LTCG QMAKE_LIBS_CORE = kernel32.lib user32.lib shell32.lib uuid.lib ole32.lib advapi32.lib ws2_32.lib QMAKE_LIBS_GUI = gdi32.lib comdlg32.lib oleaut32.lib imm32.lib winmm.lib winspool.lib ws2_32.lib ole32.lib user32.lib advapi32.lib diff --git a/mkspecs/win32-msvc2008/qmake.conf b/mkspecs/win32-msvc2008/qmake.conf index b56b41c..373a36d 100644 --- a/mkspecs/win32-msvc2008/qmake.conf +++ b/mkspecs/win32-msvc2008/qmake.conf @@ -19,9 +19,10 @@ QMAKE_YACCFLAGS = -d QMAKE_CFLAGS = -nologo -Zm200 -Zc:wchar_t- QMAKE_CFLAGS_WARN_ON = -W3 QMAKE_CFLAGS_WARN_OFF = -W0 -QMAKE_CFLAGS_RELEASE = -O2 -MD -GL +QMAKE_CFLAGS_RELEASE = -O2 -MD QMAKE_CFLAGS_DEBUG = -Zi -MDd QMAKE_CFLAGS_YACC = +QMAKE_CFLAGS_LTCG = -GL QMAKE_CXX = $$QMAKE_CC QMAKE_CXXFLAGS = $$QMAKE_CFLAGS @@ -30,6 +31,7 @@ QMAKE_CXXFLAGS_WARN_OFF = $$QMAKE_CFLAGS_WARN_OFF QMAKE_CXXFLAGS_RELEASE = $$QMAKE_CFLAGS_RELEASE QMAKE_CXXFLAGS_DEBUG = $$QMAKE_CFLAGS_DEBUG QMAKE_CXXFLAGS_YACC = $$QMAKE_CFLAGS_YACC +QMAKE_CXXFLAGS_LTCG = $$QMAKE_CFLAGS_LTCG QMAKE_CXXFLAGS_STL_ON = -EHsc QMAKE_CXXFLAGS_STL_OFF = QMAKE_CXXFLAGS_RTTI_ON = -GR @@ -50,11 +52,12 @@ QMAKE_RUN_CXX_IMP_BATCH = $(CXX) -c $(CXXFLAGS) $(INCPATH) -Fo$@ @<< QMAKE_LINK = link QMAKE_LFLAGS = /NOLOGO -QMAKE_LFLAGS_RELEASE = /INCREMENTAL:NO /LTCG +QMAKE_LFLAGS_RELEASE = /INCREMENTAL:NO QMAKE_LFLAGS_DEBUG = /DEBUG QMAKE_LFLAGS_CONSOLE = /SUBSYSTEM:CONSOLE QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS \"/MANIFESTDEPENDENCY:type=\'win32\' name=\'Microsoft.Windows.Common-Controls\' version=\'6.0.0.0\' publicKeyToken=\'6595b64144ccf1df\' language=\'*\' processorArchitecture=\'*\'\" QMAKE_LFLAGS_DLL = /DLL +QMAKE_LFLAGS_LTCG = /LTCG QMAKE_LIBS_CORE = kernel32.lib user32.lib shell32.lib uuid.lib ole32.lib advapi32.lib ws2_32.lib QMAKE_LIBS_GUI = gdi32.lib comdlg32.lib oleaut32.lib imm32.lib winmm.lib winspool.lib ws2_32.lib ole32.lib user32.lib advapi32.lib diff --git a/tools/configure/configureapp.cpp b/tools/configure/configureapp.cpp index bcbf557..91344c8 100644 --- a/tools/configure/configureapp.cpp +++ b/tools/configure/configureapp.cpp @@ -351,6 +351,7 @@ Configure::Configure( int& argc, char** argv ) dictionary[ "QMAKESPEC" ] = tmp; dictionary[ "INCREDIBUILD_XGE" ] = "auto"; + dictionary[ "LTCG" ] = "no"; } Configure::~Configure() @@ -487,6 +488,12 @@ void Configure::parseCmdLine() else if( configCmdLine.at(i) == "-commercial" ) { dictionary[ "BUILDTYPE" ] = "commercial"; } + else if( configCmdLine.at(i) == "-ltcg" ) { + dictionary[ "LTCG" ] = "yes"; + } + else if( configCmdLine.at(i) == "-no-ltcg" ) { + dictionary[ "LTCG" ] = "no"; + } #endif else if( configCmdLine.at(i) == "-platform" ) { @@ -1465,6 +1472,9 @@ bool Configure::displayHelp() desc("SHARED", "yes", "-shared", "Create and use shared Qt libraries."); desc("SHARED", "no", "-static", "Create and use static Qt libraries.\n"); + desc("LTCG", "yes", "-ltcg", "Use Link Time Code Generation. (Release builds only)"); + desc("LTCG", "no", "-no-ltcg", "Do not use Link Time Code Generation.\n"); + desc("FAST", "no", "-no-fast", "Configure Qt normally by generating Makefiles for all project files."); desc("FAST", "yes", "-fast", "Configure Qt quickly by generating Makefiles only for library and " "subdirectory targets. All other Makefiles are created as wrappers " @@ -2494,6 +2504,8 @@ void Configure::generateCachefile() else configStream << " static"; + if( dictionary[ "LTCG" ] == "yes" ) + configStream << " ltcg"; if( dictionary[ "STL" ] == "yes" ) configStream << " stl"; if ( dictionary[ "EXCEPTIONS" ] == "yes" ) @@ -2916,6 +2928,7 @@ void Configure::displayConfig() cout << "Architecture................" << dictionary[ "ARCHITECTURE" ] << endl; cout << "Maketool...................." << dictionary[ "MAKE" ] << endl; cout << "Debug symbols..............." << (dictionary[ "BUILD" ] == "debug" ? "yes" : "no") << endl; + cout << "Link Time Code Generation..." << dictionary[ "LTCG" ] << endl; cout << "Accessibility support......." << dictionary[ "ACCESSIBILITY" ] << endl; cout << "STL support................." << dictionary[ "STL" ] << endl; cout << "Exception support..........." << dictionary[ "EXCEPTIONS" ] << endl; -- cgit v0.12