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specify `-pipe` for GCC to use pipes instead of temporary files - greatly reduces I/O usage (#4360)

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Oliver Stöneberg 2022-08-16 22:12:01 +02:00 committed by GitHub
parent 3dc2c0bd42
commit 32c0167eab
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3 changed files with 5 additions and 2 deletions
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2
Makefile
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@ -102,7 +102,7 @@ ifndef CXXFLAGS
endif endif
ifeq (g++, $(findstring g++,$(CXX))) ifeq (g++, $(findstring g++,$(CXX)))
override CXXFLAGS += -std=gnu++0x override CXXFLAGS += -std=gnu++0x -pipe
else ifeq (clang++, $(findstring clang++,$(CXX))) else ifeq (clang++, $(findstring clang++,$(CXX)))
override CXXFLAGS += -std=c++0x override CXXFLAGS += -std=c++0x
else ifeq ($(CXX), c++) else ifeq ($(CXX), c++)

3
cmake/compileroptions.cmake
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@ -46,6 +46,9 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Clang
endif() endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU") if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# use pipes instead of temporary files - greatly reduces I/O usage
add_compile_options(-pipe)
add_compile_options(-Woverloaded-virtual) # when a function declaration hides virtual functions from a base class add_compile_options(-Woverloaded-virtual) # when a function declaration hides virtual functions from a base class
add_compile_options(-Wno-maybe-uninitialized) # there are some false positives add_compile_options(-Wno-maybe-uninitialized) # there are some false positives
add_compile_options(-Wsuggest-attribute=noreturn) add_compile_options(-Wsuggest-attribute=noreturn)

2
tools/dmake.cpp
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@ -374,7 +374,7 @@ int main(int argc, char **argv)
} }
fout << "ifeq (g++, $(findstring g++,$(CXX)))\n" fout << "ifeq (g++, $(findstring g++,$(CXX)))\n"
<< " override CXXFLAGS += -std=gnu++0x\n" << " override CXXFLAGS += -std=gnu++0x -pipe\n"
<< "else ifeq (clang++, $(findstring clang++,$(CXX)))\n" << "else ifeq (clang++, $(findstring clang++,$(CXX)))\n"
<< " override CXXFLAGS += -std=c++0x\n" << " override CXXFLAGS += -std=c++0x\n"
<< "else ifeq ($(CXX), c++)\n" << "else ifeq ($(CXX), c++)\n"