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[cmake,json] add second fallback

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If both, CMake and pkg-config fail, fall back to find_path and
find_library detection
This commit is contained in:
Armin Novak
2025-09-25 15:35:36 +02:00
parent 6b90797399
commit c44052f12f
1 changed files with 66 additions and 23 deletions
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89
cmake/JsonDetect.cmake
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@@ -1,29 +1,55 @@
function(detect_package name pkgconf cmake-target)
function(detect_package name)
set(options REQUIRED)
set(oneValueArgs HEADER LIBRARY PKGCONFIG CMAKE)
cmake_parse_arguments(PARSE_ARGV 0 arg "${options}" "${oneValueArgs}" "${multiValueArgs}")
find_package(${name})
if(NOT ${name}_FOUND)
# Fallback detection:
# older ubuntu releases did not ship CMake or pkg-config files
# for ${pkgconf}. Be optimistic and try pkg-config and as last resort
# try manual detection
# some distributions only ship pkg-config and skip CMake config files.
find_package(PkgConfig)
if(PKG_CONFIG_FOUND)
pkg_check_modules(${name} ${pkgconf})
if(${name}_FOUND)
# Create imported target cjson
add_library(${cmake-target} SHARED IMPORTED)
set_property(TARGET ${cmake-target} APPEND PROPERTY IMPORTED_CONFIGURATIONS NOCONFIG)
set_target_properties(
${cmake-target}
PROPERTIES IMPORTED_CONFIGURATIONS NOCONFIG IMPORTED_LINK_INTERFACE_LANGUAGES_NOCONFIG "C"
IMPORTED_LOCATION_NOCONFIG "${${name}_LINK_LIBRARIES}" IMPORTED_SONAME_NOCONFIG
"${${name}_LIBRARIES}"
INTERFACE_INCLUDE_DIRECTORIES "${${name}_INCLUDE_DIRS}"
)
if(arg_PKGCONFIG)
set(module ${arg_PKGCONFIG})
else()
set(module ${name})
endif()
pkg_check_modules(${name} ${module})
endif()
# No CMake nor pkg-config files available, try manual detection
if(NOT ${name}_FOUND)
find_library(
${name}_LIBRARY NAMES ${arg_LIBRARY} ${arg_PKGCONFIG} ${arg_CMAKE} ${name} ${arg_CMAKE}
PATH_SUFFIXES ${name} ${arg_PKGCONFIG} ${arg_CMAKE}
)
find_path(${name}_HEADER NAMES ${arg_HEADER} ${name}.h ${arg_PKGCONFIG}.h ${arg_CMAKE}.h
PATH_SUFFIXES ${name} ${arg_PKGCONFIG} ${arg_CMAKE}
)
if(NOT ${name}_LIBRARY STREQUAL "${name}_LIBRARY-NOTFOUND" AND NOT ${name}_HEADER STREQUAL
"${name}_HEADER-NOTFOUND"
)
set(${name}_LINK_LIBRARIES "${${name}_LIBRARY}")
set(${name}_INCLUDE_DIRS "${${name}_HEADER}")
get_filename_component(${name}_LIB_FILE "${${name}_LIBRARY}" NAME_WE)
set(regex "^${CMAKE_SHARED_LIBRARY_SUFFIX}")
string(REGEX REPLACE ${regex} ${name}_LIBRARIES "${${name}_LIB_FILE}")
endif()
endif()
if(${name}_FOUND)
# Create imported target cjson
add_library(${arg_CMAKE} SHARED IMPORTED)
set_property(TARGET ${arg_CMAKE} APPEND PROPERTY IMPORTED_CONFIGURATIONS NOCONFIG)
set_target_properties(
${arg_CMAKE}
PROPERTIES IMPORTED_CONFIGURATIONS NOCONFIG IMPORTED_LINK_INTERFACE_LANGUAGES_NOCONFIG "C"
IMPORTED_LOCATION_NOCONFIG "${${name}_LINK_LIBRARIES}" IMPORTED_SONAME_NOCONFIG
"${${name}_LIBRARIES}"
INTERFACE_INCLUDE_DIRECTORIES "${${name}_INCLUDE_DIRS}"
)
endif()
endif()
@@ -60,16 +86,33 @@ unset(cJSON_FOUND CACHE)
unset(jansson_FOUND CACHE)
if(NOT WITH_JSON_DISABLED)
if(WITH_JANSSON_REQUIRED)
detect_package(jansson jansson jansson::jansson REQUIRED)
detect_package(jansson CMAKE jansson::jansson HEADER jansson.h REQUIRED)
elseif(WITH_JSONC_REQUIRED)
detect_package(json-c json-c json-c::json-c REQUIRED)
detect_package(json-c CMAKE json-c::json-c HEADER json-c/json.h REQUIRED)
elseif(WITH_CJSON_REQUIRED)
detect_package(cJSON libcjson cjson REQUIRED)
detect_package(
cJSON
PKGCONFIG
libcjson
CMAKE
cjson
HEADER
cjson/cJSON.h
REQUIRED
)
else()
# nothing required, so do a non fatal check for all
detect_package(jansson jansson jansson::jansson)
detect_package(json-c json-c json-c::json-c)
detect_package(cJSON libcjson cjson)
detect_package(jansson CMAKE jansson::jansson HEADER jansson.h)
detect_package(json-c CMAKE json-c::json-c HEADER json-c/json.h)
detect_package(
cJSON
PKGCONFIG
libcjson
CMAKE
cjson
HEADER
cjson/cJSON.h
)
endif()
if(NOT json-c_FOUND AND NOT cJSON_FOUND AND NOT jansson_FOUND)