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function(llvm_replace_compiler_option var old new)
# Replaces a compiler option or switch `old' in `var' by `new'.
# If `old' is not in `var', appends `new' to `var'.
# Example: llvm_replace_compiler_option(CMAKE_CXX_FLAGS_RELEASE "-O3" "-O2")
# If the option already is on the variable, don't add it:
if( "${${var}}" MATCHES "(^| )${new}($| )" )
set(n "")
else()
set(n "${new}")
endif()
if( "${${var}}" MATCHES "(^| )${old}($| )" )
string( REGEX REPLACE "(^| )${old}($| )" " ${n} " ${var} "${${var}}" )
else()
set( ${var} "${${var}} ${n}" )
endif()
set( ${var} "${${var}}" PARENT_SCOPE )
endfunction(llvm_replace_compiler_option)
macro(add_td_sources srcs)
file(GLOB tds *.td)
if( tds )
source_group("TableGen descriptions" FILES ${tds})
set_source_files_properties(${tds} PROPERTIES HEADER_FILE_ONLY ON)
list(APPEND ${srcs} ${tds})
endif()
endmacro(add_td_sources)
function(add_header_files_for_glob hdrs_out glob)
file(GLOB hds ${glob})
set(filtered)
foreach(file ${hds})
# Explicit existence check is necessary to filter dangling symlinks
# out. See https://bugs.gentoo.org/674662.
if(EXISTS ${file})
list(APPEND filtered ${file})
endif()
endforeach()
set(${hdrs_out} ${filtered} PARENT_SCOPE)
endfunction(add_header_files_for_glob)
function(find_all_header_files hdrs_out additional_headerdirs)
add_header_files_for_glob(hds *.h)
list(APPEND all_headers ${hds})
foreach(additional_dir ${additional_headerdirs})
add_header_files_for_glob(hds "${additional_dir}/*.h")
list(APPEND all_headers ${hds})
add_header_files_for_glob(hds "${additional_dir}/*.inc")
list(APPEND all_headers ${hds})
endforeach(additional_dir)
set( ${hdrs_out} ${all_headers} PARENT_SCOPE )
endfunction(find_all_header_files)
function(llvm_process_sources OUT_VAR)
cmake_parse_arguments(ARG "PARTIAL_SOURCES_INTENDED" "" "ADDITIONAL_HEADERS;ADDITIONAL_HEADER_DIRS" ${ARGN})
set(sources ${ARG_UNPARSED_ARGUMENTS})
llvm_check_source_file_list(${sources})
# Don't generate __SHORT_FILE__ on VS builds as it can prevent build parallelisation.
if(NOT CMAKE_GENERATOR MATCHES "Visual Studio")
foreach(fn ${sources})
get_filename_component(suf ${fn} EXT)
if("${suf}" STREQUAL ".cpp" OR "${suf}" STREQUAL ".c")
get_filename_component(short_name ${fn} NAME)
set_property(
SOURCE ${fn}
APPEND
PROPERTY COMPILE_DEFINITIONS __SHORT_FILE__="${short_name}")
endif()
endforeach()
endif()
# This adds .td and .h files to the Visual Studio solution:
add_td_sources(sources)
find_all_header_files(hdrs "${ARG_ADDITIONAL_HEADER_DIRS}")
if (hdrs)
set_source_files_properties(${hdrs} PROPERTIES HEADER_FILE_ONLY ON)
endif()
set_source_files_properties(${ARG_ADDITIONAL_HEADERS} PROPERTIES HEADER_FILE_ONLY ON)
list(APPEND sources ${ARG_ADDITIONAL_HEADERS} ${hdrs})
set( ${OUT_VAR} ${sources} PARENT_SCOPE )
endfunction(llvm_process_sources)
function(llvm_check_source_file_list)
cmake_parse_arguments(ARG "" "SOURCE_DIR" "" ${ARGN})
foreach(l ${ARG_UNPARSED_ARGUMENTS})
get_filename_component(fp ${l} REALPATH)
list(APPEND listed ${fp})
endforeach()
if(ARG_SOURCE_DIR)
file(GLOB globbed
"${ARG_SOURCE_DIR}/*.c" "${ARG_SOURCE_DIR}/*.cpp")
else()
file(GLOB globbed *.c *.cpp)
endif()
set_property(DIRECTORY APPEND PROPERTY LLVM_SOURCE_FILES ${listed})
if (ARG_PARTIAL_SOURCES_INTENDED) # llvm_process_source's scope
return()
endif()
get_directory_property(listed LLVM_SOURCE_FILES)
foreach(g ${globbed})
get_filename_component(fn ${g} NAME)
if(ARG_SOURCE_DIR)
set(entry "${g}")
else()
set(entry "${fn}")
endif()
get_filename_component(gp ${g} REALPATH)
# Don't reject hidden files. Some editors create backups in the
# same directory as the file.
if (NOT "${fn}" MATCHES "^\\.")
if(NOT ${entry} IN_LIST LLVM_OPTIONAL_SOURCES)
if(NOT ${gp} IN_LIST listed)
if(ARG_SOURCE_DIR)
set(fn_relative "${ARG_SOURCE_DIR}/${fn}")
else()
set(fn_relative "${fn}")
endif()
message(SEND_ERROR "Found erroneous configuration for source file ${fn_relative}
LLVM's build system enforces that all source files are added to a build target, \
that exactly one build target exists in each directory, \
and that this target lists all files in that directory. \
If you want multiple targets in the same directory, add \
PARTIAL_SOURCES_INTENDED to the target specification, though it is discouraged.
Please update ${CMAKE_CURRENT_LIST_FILE}\n")
endif()
endif()
endif()
endforeach()
endfunction(llvm_check_source_file_list)
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