cd652500af
This patch adds a new config option to qmake to enable full optimization where it makes sense. This currently is supported on all gcc like compilers by exchanging -O2 for -O3. In qtbase it is used to enable full optimizations on qtcore and qtgui and in a later patch can be used to replace similar existing logic in QtWebKit's WTF and JavaScriptCore modules. This fixes a performance regression from gcc 4.7 to 4.8 in the software renderer. An aliasing error in qregion.cpp which was exposed by more aggresive optimization has been solved as well. Change-Id: Ic2c6c41b79cb3846212b40e7bcc11ff492beb27f Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
#
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# Qmake configuration for the GNU C++ compiler
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#
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# Before making changes to this file, please read the comment in
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# gcc-base.conf, to make sure the change goes in the right place.
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#
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# To verify that your change has the desired effect on the final configuration
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# you can use the manual test in tests/manual/mkspecs.
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#
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QMAKE_COMPILER = gcc
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QMAKE_CC = gcc
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QMAKE_LINK_C = $$QMAKE_CC
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QMAKE_LINK_C_SHLIB = $$QMAKE_CC
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QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO += $$QMAKE_CFLAGS_OPTIMIZE -g
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QMAKE_CXX = g++
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QMAKE_LINK = $$QMAKE_CXX
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QMAKE_LINK_SHLIB = $$QMAKE_CXX
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QMAKE_CXXFLAGS_RELEASE_WITH_DEBUGINFO += $$QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO
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QMAKE_PCH_OUTPUT_EXT = .gch
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QMAKE_CFLAGS_PRECOMPILE = -x c-header -c ${QMAKE_PCH_INPUT} -o ${QMAKE_PCH_OUTPUT}
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QMAKE_CFLAGS_USE_PRECOMPILE = -include ${QMAKE_PCH_OUTPUT_BASE}
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QMAKE_CXXFLAGS_PRECOMPILE = -x c++-header -c ${QMAKE_PCH_INPUT} -o ${QMAKE_PCH_OUTPUT}
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QMAKE_CXXFLAGS_USE_PRECOMPILE = $$QMAKE_CFLAGS_USE_PRECOMPILE
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QMAKE_CXXFLAGS_CXX11 = -std=c++0x
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QMAKE_LFLAGS_CXX11 =
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