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Use standard CMake constructs to export the library's targets. (PCRE2…
…Project#260) * Use standard CMake constructs to export the library's targets. * Fix typo. * Document that PCRE2_USE_STATIC_LIBS is not required if only one edition of the library has been built. * Replace some missed stuff from previous review. * Don't explicitly set `PCRE2_FOUND` to true. * Avoid defining the target aliases if they are already defined. * Set `PCRE2_LIBRARIES` and `PCRE2_***_LIBRARY` for compatibility. * Change `PCRE2_USE_STATIC_LIBS` to prohibit loading the shared library if set.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -5,11 +5,17 @@ | |
| # | ||
| # Static vs. shared | ||
| # ----------------- | ||
| # To make use of the static library instead of the shared one, one needs | ||
| # To force using the static library instead of the shared one, one needs | ||
| # to set the variable PCRE2_USE_STATIC_LIBS to ON before calling find_package. | ||
| # If the variable is not set, the static library will be used if only that has | ||
| # been built, otherwise the shared library will be used. | ||
| # | ||
| # The following components are supported: 8BIT, 16BIT, 32BIT and POSIX. | ||
| # They used to be required but not anymore; all available targets will | ||
| # be defined regardless of the requested components. | ||
| # Example: | ||
| # set(PCRE2_USE_STATIC_LIBS ON) | ||
| # find_package(PCRE2 CONFIG COMPONENTS 8BIT) | ||
| # find_package(PCRE2 CONFIG) | ||
| # | ||
| # This will define the following variables: | ||
| # | ||
|
|
@@ -23,70 +29,42 @@ | |
| # PCRE2::32BIT - The 32 bit PCRE2 library. | ||
| # PCRE2::POSIX - The POSIX PCRE2 library. | ||
|
|
||
| set(PCRE2_NON_STANDARD_LIB_PREFIX @NON_STANDARD_LIB_PREFIX@) | ||
| set(PCRE2_NON_STANDARD_LIB_SUFFIX @NON_STANDARD_LIB_SUFFIX@) | ||
| set(PCRE2_8BIT_NAME pcre2-8) | ||
| set(PCRE2_16BIT_NAME pcre2-16) | ||
| set(PCRE2_32BIT_NAME pcre2-32) | ||
| set(PCRE2_POSIX_NAME pcre2-posix) | ||
| find_path(PCRE2_INCLUDE_DIR NAMES pcre2.h DOC "PCRE2 include directory") | ||
| if (PCRE2_USE_STATIC_LIBS) | ||
| if (MSVC) | ||
| set(PCRE2_8BIT_NAME pcre2-8-static) | ||
| set(PCRE2_16BIT_NAME pcre2-16-static) | ||
| set(PCRE2_32BIT_NAME pcre2-32-static) | ||
| set(PCRE2_POSIX_NAME pcre2-posix-static) | ||
| endif () | ||
| @PACKAGE_INIT@ | ||
|
|
||
| set(PCRE2_PREFIX ${CMAKE_STATIC_LIBRARY_PREFIX}) | ||
| set(PCRE2_SUFFIX ${CMAKE_STATIC_LIBRARY_SUFFIX}) | ||
| else () | ||
| set(PCRE2_PREFIX ${CMAKE_SHARED_LIBRARY_PREFIX}) | ||
| if (MINGW AND PCRE2_NON_STANDARD_LIB_PREFIX) | ||
| set(PCRE2_PREFIX "") | ||
| endif () | ||
| include(CMakeFindDependencyMacro) | ||
| if("@REQUIRE_PTHREAD@") # REQUIRE_PTHREAD | ||
| find_dependency(Threads) | ||
| endif() | ||
|
|
||
| set(PCRE2_SUFFIX ${CMAKE_SHARED_LIBRARY_SUFFIX}) | ||
| if (MINGW AND PCRE2_NON_STANDARD_LIB_SUFFIX) | ||
| set(PCRE2_SUFFIX "-0.dll") | ||
| endif () | ||
| endif () | ||
| find_library(PCRE2_8BIT_LIBRARY NAMES ${PCRE2_PREFIX}${PCRE2_8BIT_NAME}${PCRE2_SUFFIX} ${PCRE2_PREFIX}${PCRE2_8BIT_NAME}d${PCRE2_SUFFIX} DOC "8 bit PCRE2 library") | ||
| find_library(PCRE2_16BIT_LIBRARY NAMES ${PCRE2_PREFIX}${PCRE2_16BIT_NAME}${PCRE2_SUFFIX} ${PCRE2_PREFIX}${PCRE2_8BIT_NAME}d${PCRE2_SUFFIX} DOC "16 bit PCRE2 library") | ||
| find_library(PCRE2_32BIT_LIBRARY NAMES ${PCRE2_PREFIX}${PCRE2_32BIT_NAME}${PCRE2_SUFFIX} ${PCRE2_PREFIX}${PCRE2_8BIT_NAME}d${PCRE2_SUFFIX} DOC "32 bit PCRE2 library") | ||
| find_library(PCRE2_POSIX_LIBRARY NAMES ${PCRE2_PREFIX}${PCRE2_POSIX_NAME}${PCRE2_SUFFIX} ${PCRE2_PREFIX}${PCRE2_8BIT_NAME}d${PCRE2_SUFFIX} DOC "8 bit POSIX PCRE2 library") | ||
| unset(PCRE2_NON_STANDARD_LIB_PREFIX) | ||
| unset(PCRE2_NON_STANDARD_LIB_SUFFIX) | ||
| unset(PCRE2_8BIT_NAME) | ||
| unset(PCRE2_16BIT_NAME) | ||
| unset(PCRE2_32BIT_NAME) | ||
| unset(PCRE2_POSIX_NAME) | ||
| include("${CMAKE_CURRENT_LIST_DIR}/pcre2-targets.cmake") | ||
|
|
||
| # Set version | ||
| if (PCRE2_INCLUDE_DIR) | ||
| set(PCRE2_VERSION "@PCRE2_MAJOR@.@[email protected]") | ||
| endif () | ||
| set(PCRE2_VERSION "@PCRE2_MAJOR@.@[email protected]") | ||
|
|
||
| # Which components have been found. | ||
| if (PCRE2_8BIT_LIBRARY) | ||
| set(PCRE2_8BIT_FOUND TRUE) | ||
| endif () | ||
| if (PCRE2_16BIT_LIBRARY) | ||
| set(PCRE2_16BIT_FOUND TRUE) | ||
| endif () | ||
| if (PCRE2_32BIT_LIBRARY) | ||
| set(PCRE2_32BIT_FOUND TRUE) | ||
| endif () | ||
| if (PCRE2_POSIX_LIBRARY) | ||
| set(PCRE2_POSIX_FOUND TRUE) | ||
| endif () | ||
|
|
||
| # Check if at least one component has been specified. | ||
| list(LENGTH PCRE2_FIND_COMPONENTS PCRE2_NCOMPONENTS) | ||
| if (PCRE2_NCOMPONENTS LESS 1) | ||
| message(FATAL_ERROR "No components have been specified. This is not allowed. Please, specify at least one component.") | ||
| endif () | ||
| unset(PCRE2_NCOMPONENTS) | ||
| # Chooses the linkage of the library to expose in the | ||
| # unsuffixed edition of the target. | ||
| macro(_pcre2_add_component_target component target) | ||
| # If the static library exists and either PCRE2_USE_STATIC_LIBS | ||
| # is defined, or the dynamic library does not exist, use the static library. | ||
| if(NOT TARGET PCRE2::${component}) | ||
| if(TARGET pcre2::pcre2-${target}-static AND (PCRE2_USE_STATIC_LIBS OR NOT TARGET pcre2::pcre2-${target}-shared)) | ||
| add_library(PCRE2::${component} ALIAS pcre2::pcre2-${target}-static) | ||
| set(PCRE2_${component}_FOUND TRUE) | ||
| # Otherwise use the dynamic library if it exists. | ||
| elseif(TARGET pcre2::pcre2-${target}-shared AND NOT PCRE2_USE_STATIC_LIBS) | ||
| add_library(PCRE2::${component} ALIAS pcre2::pcre2-${target}-shared) | ||
| set(PCRE2_${component}_FOUND TRUE) | ||
| endif() | ||
| if(PCRE2_${component}_FOUND) | ||
| get_target_property(PCRE2_${component}_LIBRARY PCRE2::${component} IMPORTED_LOCATION) | ||
| set(PCRE2_LIBRARIES ${PCRE2_LIBRARIES} ${PCRE2_${component}_LIBRARY}) | ||
| endif() | ||
| endif() | ||
| endmacro() | ||
| _pcre2_add_component_target(8BIT 8) | ||
| _pcre2_add_component_target(16BIT 16) | ||
| _pcre2_add_component_target(32BIT 32) | ||
| _pcre2_add_component_target(POSIX posix) | ||
|
|
||
| # When POSIX component has been specified make sure that also 8BIT component is specified. | ||
| set(PCRE2_8BIT_COMPONENT FALSE) | ||
|
|
@@ -105,41 +83,5 @@ endif() | |
| unset(PCRE2_8BIT_COMPONENT) | ||
| unset(PCRE2_POSIX_COMPONENT) | ||
|
|
||
| include(FindPackageHandleStandardArgs) | ||
| set(${CMAKE_FIND_PACKAGE_NAME}_CONFIG "${CMAKE_CURRENT_LIST_FILE}") | ||
| find_package_handle_standard_args(PCRE2 | ||
| FOUND_VAR PCRE2_FOUND | ||
| REQUIRED_VARS PCRE2_INCLUDE_DIR | ||
| HANDLE_COMPONENTS | ||
| VERSION_VAR PCRE2_VERSION | ||
| CONFIG_MODE | ||
| ) | ||
|
|
||
| set(PCRE2_LIBRARIES) | ||
| if (PCRE2_FOUND) | ||
| foreach(component ${PCRE2_FIND_COMPONENTS}) | ||
| if (PCRE2_USE_STATIC_LIBS) | ||
| add_library(PCRE2::${component} STATIC IMPORTED) | ||
| target_compile_definitions(PCRE2::${component} INTERFACE PCRE2_STATIC) | ||
| else () | ||
| add_library(PCRE2::${component} SHARED IMPORTED) | ||
| endif () | ||
| set_target_properties(PCRE2::${component} PROPERTIES | ||
| IMPORTED_LOCATION "${PCRE2_${component}_LIBRARY}" | ||
| INTERFACE_INCLUDE_DIRECTORIES "${PCRE2_INCLUDE_DIR}" | ||
| ) | ||
| if (component STREQUAL "POSIX") | ||
| set_target_properties(PCRE2::${component} PROPERTIES | ||
| INTERFACE_LINK_LIBRARIES "PCRE2::8BIT" | ||
| LINK_LIBRARIES "PCRE2::8BIT" | ||
| ) | ||
| endif () | ||
|
|
||
| set(PCRE2_LIBRARIES ${PCRE2_LIBRARIES} ${PCRE2_${component}_LIBRARY}) | ||
| mark_as_advanced(PCRE2_${component}_LIBRARY) | ||
| endforeach() | ||
| endif () | ||
|
|
||
| mark_as_advanced( | ||
| PCRE2_INCLUDE_DIR | ||
| ) | ||
| # Check for required components. | ||
| check_required_components("PCRE2") | ||