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cmake_minimum_required(VERSION 3.14)
project(portable-snippets LANGUAGES C)
include(GNUInstallDirs)
option(PSNIP_INSTALL_HEADERS "Install header files" ON)
# https://stackoverflow.com/questions/7787823/cmake-how-to-get-the-name-of-all-subdirectories-of-a-directory
function (list_subdir output_variable path)
file(GLOB sub_entries RELATIVE ${path} ${path}/*)
set(dirlist "")
foreach (entry ${sub_entries})
if (IS_DIRECTORY ${path}/${entry})
list(APPEND dirlist ${entry})
endif ()
endforeach ()
set(${output_variable} ${dirlist} PARENT_SCOPE)
endfunction ()
function (check_if_header_only output_variable files)
set(is_header_only 1)
foreach (entry ${files})
get_filename_component(file_ext ${entry} EXT)
if (file_ext STREQUAL .c)
set(is_header_only 0)
endif ()
endforeach ()
set(${output_variable} ${is_header_only} PARENT_SCOPE)
endfunction ()
list_subdir(subdirs ${CMAKE_CURRENT_LIST_DIR})
list(REMOVE_ITEM subdirs tests)
set(namespace unofficial::portable-snippets)
foreach (subdir ${subdirs})
set(module ${subdir})
set(module_path "${CMAKE_CURRENT_LIST_DIR}/${subdir}")
file(GLOB entries
LIST_DIRECTORIES false
${module_path}/*.h
${module_path}/*.c
)
check_if_header_only(header_only "${entries}")
if (header_only)
add_library(${module} INTERFACE)
target_include_directories(
${module}
INTERFACE
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
else ()
add_library(${module} STATIC ${entries})
set_target_properties(
${module}
PROPERTIES
PREFIX ""
OUTPUT_NAME "psnip-${module}"
)
target_include_directories(
${module}
PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
list(FILTER entries EXCLUDE REGEX "\.c$")
endif ()
add_library(${namespace}::${module} ALIAS ${module})
if (PSNIP_INSTALL_HEADERS)
install(FILES ${entries} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${subdir})
endif ()
install(TARGETS ${module} EXPORT unofficial-portable-snippets-config)
endforeach ()
install(
EXPORT unofficial-portable-snippets-config
NAMESPACE ${namespace}::
DESTINATION share/unofficial-portable-snippets
PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
)
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