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larsch / cmake-precompiled-header

Visual Studio and GCC precompiled header macro for CMake
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If project define string difinition or have debug compiller options - not work precompile header. #2

Open talshadow opened 9 years ago

talshadow commented 9 years ago

if some in CMakeLists.txt have : target_compile_definitions(test-cxx-force PUBLIC OPENFLAG=\"Open\") build wrong gch file. if call cmake with -DCMAKE_BUILD_TYPE=Debug build wrong gch file. Try this lifehack :)

export_all_flags("${_pch_flags_file}")

#set(_compiler_FLAGS "@${_pch_flags_file}")
add_custom_command(
  OUTPUT "${_pchfile}"
  COMMAND "${CMAKE_COMMAND}" -E copy "${_pch_header}" "${_pchfile}"
  DEPENDS "${_pch_header}"
  COMMENT "Updating ${_name}")
add_custom_command(
  OUTPUT "${_output_cxx}"
  COMMAND "${CMAKE_CXX_COMPILER}" $(CXX_DEFINES) $(CXX_FLAGS) -x c++-header -o "${_output_cxx}" "${_pchfile}"
  DEPENDS "${_pchfile}" "${_pch_flags_file}"
  COMMENT "Precompiling ${_name} for ${_target} (C++)")
add_custom_command(
  OUTPUT "${_output_c}"
  COMMAND "${CMAKE_C_COMPILER}" $(C_DEFINES) $(C_FLAGS) -x c-header -o "${_output_c}" "${_pchfile}"
  DEPENDS "${_pchfile}" "${_pch_flags_file}"
  COMMENT "Precompiling ${_name} for ${_target} (C)")
wolfv commented 8 years ago

I have a similar problem when trying to use C++11. I defined using C++11 with set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") but it isn't picked up by this the precompiled header.

phobos2077 commented 7 years ago

I have similar issue. I'm using set(CMAKE_CXX_STANDARD 14) but it doesn't got picked up by this script when compiling the header, and so compilation fails.

bubnikv commented 5 years ago 
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

will not work. You have to use add_compile_options(-std=c++11) instead