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[cmake] Provide extract_flags macro in share/cmake directory, simplify creation of docs_cpp2rst target

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This commit is contained in:
Nils Wentzell 2019-09-24 15:17:47 -04:00
parent 10fd7f19a0
commit 9f5aa8578c
2 changed files with 72 additions and 18 deletions
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23
doc/CMakeLists.txt
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@ -4,23 +4,10 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/conf.py.in ${CMAKE_CURRENT_BINARY_DIR
# -----------------------------------------------------------------------------
# Create an optional target that allows us to regenerate the C++ doc with c++2rst
# -----------------------------------------------------------------------------
foreach(t app4triqs_c triqs)
get_property(INCLUDE_DIRS TARGET ${t} PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
get_property(SYSTEM_INCLUDE_DIRS TARGET ${t} PROPERTY INTERFACE_SYSTEM_INCLUDE_DIRECTORIES)
if(SYTEM_INCLUDE_DIRS)
list(REMOVE_ITEM INCLUDE_DIRS ${SYSTEM_INCLUDE_DIRS})
endif()
foreach(DIR ${INCLUDE_DIRS})
set(CPP2RST_INCLUDE_FLAGS ${CPP2RST_INCLUDE_FLAGS} -I${DIR})
endforeach()
foreach(DIR ${SYSTEM_INCLUDE_DIRS})
set(CPP2RST_INCLUDE_FLAGS ${CPP2RST_INCLUDE_FLAGS} -isystem=${DIR})
endforeach()
get_property(COMPILE_OPTIONS TARGET ${t} PROPERTY INTERFACE_COMPILE_OPTIONS)
set(CPP2RST_CXXFLAGS ${CPP2RST_CXXFLAGS} ${COMPILE_OPTIONS})
endforeach()
add_custom_target(docs_cpp2rst)
include(${PROJECT_SOURCE_DIR}/share/cmake/extract_flags.cmake)
extract_flags(app4triqs_c)
separate_arguments(app4triqs_c_CXXFLAGS)
macro(generate_docs header_file)
add_custom_command(
TARGET docs_cpp2rst
@ -30,8 +17,8 @@ macro(generate_docs header_file)
${header_file}
-N app4triqs
--output_directory ${CMAKE_CURRENT_SOURCE_DIR}/cpp2rst_generated
--cxxflags="${CPP2RST_CXXFLAGS}"
${CPP2RST_INCLUDE_FLAGS}
-I${PROJECT_SOURCE_DIR}/c++
--cxxflags="${app4triqs_c_CXXFLAGS}"
)
endmacro(generate_docs)

67
share/cmake/extract_flags.cmake Normal file
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@ -0,0 +1,67 @@
# Recursively fetch all targets that the interface of a target depends upon
macro(get_all_interface_targets name target)
get_property(TARGET_LINK_LIBRARIES TARGET ${target} PROPERTY INTERFACE_LINK_LIBRARIES)
foreach(lib IN LISTS TARGET_LINK_LIBRARIES)
if(TARGET ${lib})
# Append to list
list(APPEND ${name}_INTERFACE_TARGETS ${lib})
# Recure into target dependencies
get_all_interface_targets(${name} ${lib})
endif()
endforeach()
endmacro()
# Extract the property from the target and recursively from all targets it depends upon
macro(get_property_recursive)
cmake_parse_arguments(get_property_recursive "" "TARGET" "PROPERTY" ${ARGN})
set(target ${get_property_recursive_TARGET})
set(property ${get_property_recursive_PROPERTY})
get_all_interface_targets(${target} ${target})
foreach(t IN LISTS ${target}_INTERFACE_TARGETS ITEMS ${target})
get_property(p TARGET ${t} PROPERTY ${property})
list(APPEND ${ARGV0} ${p})
endforeach()
# Clean duplicates and any occurance of '/usr/include' dirs
if(${ARGV0})
list(REMOVE_DUPLICATES ${ARGV0})
list(REMOVE_ITEM ${ARGV0} /usr/include)
endif()
endmacro()
# Recursively fetch all compiler flags attached to the interface of a target
macro(extract_flags target)
get_property_recursive(opts TARGET ${target} PROPERTY INTERFACE_COMPILE_OPTIONS)
foreach(opt ${opts})
set(${target}_LDFLAGS "${${target}_LDFLAGS} ${opt}")
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} ${opt}")
endforeach()
get_property_recursive(defs TARGET ${target} PROPERTY INTERFACE_COMPILE_DEFINITIONS)
foreach(def ${defs})
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} -D${def}")
endforeach()
get_property_recursive(inc_dirs TARGET ${target} PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
get_property_recursive(sys_inc_dirs TARGET ${target} PROPERTY INTERFACE_SYSTEM_INCLUDE_DIRECTORIES)
list(REMOVE_ITEM inc_dirs ${sys_inc_dirs})
foreach(dir ${inc_dirs})
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} -I${dir}")
endforeach()
foreach(dir ${sys_inc_dirs})
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} -isystem${dir}")
endforeach()
get_property_recursive(libs TARGET ${target} PROPERTY INTERFACE_LINK_LIBRARIES)
foreach(lib ${libs})
if(NOT TARGET ${lib})
set(${target}_LDFLAGS "${${target}_LDFLAGS} ${lib}")
endif()
endforeach()
# We have to replace generator expressions explicitly
string(REGEX REPLACE "\\$<INSTALL_INTERFACE:([^ ]*)>" "\\1" ${target}_LDFLAGS "${${target}_LDFLAGS}")
string(REGEX REPLACE "\\$<INSTALL_INTERFACE:([^ ]*)>" "\\1" ${target}_CXXFLAGS "${${target}_CXXFLAGS}")
string(REGEX REPLACE " [^ ]*\\$<[^ ]*:[^ ]*>" "" ${target}_LDFLAGS "${${target}_LDFLAGS}")
string(REGEX REPLACE " [^ ]*\\$<[^ ]*:[^ ]*>" "" ${target}_CXXFLAGS "${${target}_CXXFLAGS}")
endmacro()