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gcc {
# on Windows, MinGW's support for -flto=N is broken
intel_icc {
QMAKE_LFLAGS_LTCG ~= s/-ipo/-ipo=$$QMAKE_HOST.cpu_count/
} else: !clang:!equals(QMAKE_HOST.os, Windows):greaterThan(QMAKE_HOST.cpu_count, 1) {
# Override LTO number of jobs
QMAKE_LFLAGS_LTCG ~= s/^-flto$/-flto=$$QMAKE_HOST.cpu_count/
}
# When doing link-time code generation, we need to pass the compiler
# flags during linking the stage too. This file is processed after
# default_post.prf, so the QMAKE_CXXFLAGS already contains
# QMAKE_CXXFLAGS_DEBUG or _RELEASE.
use_c_linker {
# use_c_linker.prf is in effect, use the C flags
QMAKE_LFLAGS_LTCG += $$QMAKE_CFLAGS $$QMAKE_CFLAGS_LTCG
QMAKE_LFLAGS_APP += $$QMAKE_CFLAGS_APP
QMAKE_LFLAGS_SHLIB += $$QMAKE_CFLAGS_SHLIB
QMAKE_LFLAGS_PLUGIN += $$QMAKE_CFLAGS_SHLIB
} else {
QMAKE_LFLAGS_LTCG = $$QMAKE_CXXFLAGS $$QMAKE_LFLAGS_LTCG
QMAKE_LFLAGS_APP += $$QMAKE_CXXFLAGS_APP
QMAKE_LFLAGS_SHLIB += $$QMAKE_CXXFLAGS_SHLIB
QMAKE_LFLAGS_PLUGIN += $$QMAKE_CFLAGS_SHLIB
}
}
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