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authorMarius Storm-Olsen <marius@trolltech.com>2009-05-13 11:58:18 (GMT)
committerMarius Storm-Olsen <marius@trolltech.com>2009-05-13 12:46:09 (GMT)
commit56191830cdad9cbaa81c2ed8f22f1b2650a5608a (patch)
treee5d5a02c283fd251be2a6753661b33729ccf9dac
parenta18ebd2a70e83863bc9a8cc64a65791a6d879f02 (diff)
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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
-rw-r--r--configure.exebin860160 -> 856064 bytes
-rw-r--r--mkspecs/features/win32/ltcg.prf5
-rw-r--r--mkspecs/win32-msvc2005/qmake.conf7
-rw-r--r--mkspecs/win32-msvc2008/qmake.conf7
-rw-r--r--tools/configure/configureapp.cpp13
5 files changed, 28 insertions, 4 deletions
diff --git a/configure.exe b/configure.exe
index ff71f08..40843b4 100644
--- a/configure.exe
+++ b/configure.exe
Binary files 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;