Fix CMake integration.

The patch has been submitted upstream in PCRE2Project/pcre2#260.

ports/pcre2/fix-cmake.patch

@@ -0,0 +1,371 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index cec7dfb..fe72cea 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -100,6 +100,8 @@
+ # 2021-08-28 PH increased minimum version
+ # 2021-08-28 PH added test for realpath()
+ # 2022-12-10 PH added support for pcre2posix_test
++# 2023-01-15 Carlo added C99 as the minimum required
++# 2023-06-03 Theodore used standard CMake constructs to export the library's targets.
+
+ # Increased minimum to 2.8.5 to support GNUInstallDirs.
+ # Increased minimum to 3.1 to support imported targets.
+@@ -136,6 +138,7 @@ INCLUDE(CheckFunctionExists)
+ INCLUDE(CheckSymbolExists)
+ INCLUDE(CheckIncludeFile)
+ INCLUDE(CheckTypeSize)
++INCLUDE(CMakePackageConfigHelpers)
+ INCLUDE(GNUInstallDirs) # for CMAKE_INSTALL_LIBDIR
+
+ CHECK_INCLUDE_FILE(dirent.h     HAVE_DIRENT_H)
+@@ -697,7 +700,7 @@ SET(targets)
+
+ IF(PCRE2_BUILD_PCRE2_8)
+   IF(BUILD_STATIC_LIBS)
+-    ADD_LIBRARY(pcre2-8-static STATIC ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
++    ADD_LIBRARY(pcre2-8-static STATIC ${PCRE2_SOURCES})
+     SET_TARGET_PROPERTIES(pcre2-8-static PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_8_MACHO_COMPATIBILITY_VERSION}"
+@@ -705,12 +708,14 @@ IF(PCRE2_BUILD_PCRE2_8)
+       VERSION ${LIBPCRE2_8_VERSION}
+       SOVERSION ${LIBPCRE2_8_SOVERSION})
+     TARGET_COMPILE_DEFINITIONS(pcre2-8-static PUBLIC PCRE2_STATIC)
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-8-static PUBLIC ${PROJECT_BINARY_DIR})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-8-static PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     IF(REQUIRE_PTHREAD)
+         TARGET_LINK_LIBRARIES(pcre2-8-static Threads::Threads)
+     ENDIF(REQUIRE_PTHREAD)
+     SET(targets ${targets} pcre2-8-static)
+-    ADD_LIBRARY(pcre2-posix-static STATIC ${PCRE2POSIX_HEADERS} ${PCRE2POSIX_SOURCES})
++    ADD_LIBRARY(pcre2-posix-static STATIC ${PCRE2POSIX_SOURCES})
+     SET_TARGET_PROPERTIES(pcre2-posix-static PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_POSIX_MACHO_COMPATIBILITY_VERSION}"
+@@ -719,7 +724,9 @@ IF(PCRE2_BUILD_PCRE2_8)
+       SOVERSION ${LIBPCRE2_POSIX_SOVERSION})
+     TARGET_LINK_LIBRARIES(pcre2-posix-static pcre2-8-static)
+     TARGET_COMPILE_DEFINITIONS(pcre2-posix-static PUBLIC PCRE2_STATIC)
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-posix-static PUBLIC ${PROJECT_BINARY_DIR})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-posix-static PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     SET(targets ${targets} pcre2-posix-static)
+
+     IF(MSVC)
+@@ -735,8 +742,10 @@ IF(PCRE2_BUILD_PCRE2_8)
+   ENDIF(BUILD_STATIC_LIBS)
+
+   IF(BUILD_SHARED_LIBS)
+-    ADD_LIBRARY(pcre2-8-shared SHARED ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-8-shared PUBLIC ${PROJECT_BINARY_DIR})
++    ADD_LIBRARY(pcre2-8-shared SHARED ${PCRE2_SOURCES})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-8-shared PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     SET_TARGET_PROPERTIES(pcre2-8-shared PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_8_MACHO_COMPATIBILITY_VERSION}"
+@@ -748,8 +757,11 @@ IF(PCRE2_BUILD_PCRE2_8)
+         TARGET_LINK_LIBRARIES(pcre2-8-shared Threads::Threads)
+     ENDIF(REQUIRE_PTHREAD)
+     SET(targets ${targets} pcre2-8-shared)
+-    ADD_LIBRARY(pcre2-posix-shared SHARED ${PCRE2POSIX_HEADERS} ${PCRE2POSIX_SOURCES})
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-posix-shared PUBLIC ${PROJECT_BINARY_DIR})
++
++    ADD_LIBRARY(pcre2-posix-shared SHARED ${PCRE2POSIX_SOURCES})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-posix-shared PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     SET_TARGET_PROPERTIES(pcre2-posix-shared PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_POSIX_MACHO_COMPATIBILITY_VERSION}"
+@@ -785,8 +797,10 @@ ENDIF(PCRE2_BUILD_PCRE2_8)
+
+ IF(PCRE2_BUILD_PCRE2_16)
+   IF(BUILD_STATIC_LIBS)
+-    ADD_LIBRARY(pcre2-16-static STATIC ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-16-static PUBLIC ${PROJECT_BINARY_DIR})
++    ADD_LIBRARY(pcre2-16-static STATIC ${PCRE2_SOURCES})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-16-static PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     SET_TARGET_PROPERTIES(pcre2-16-static PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=16
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
+@@ -810,8 +824,10 @@ IF(PCRE2_BUILD_PCRE2_16)
+   ENDIF(BUILD_STATIC_LIBS)
+
+   IF(BUILD_SHARED_LIBS)
+-    ADD_LIBRARY(pcre2-16-shared SHARED ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-16-shared PUBLIC ${PROJECT_BINARY_DIR})
++    ADD_LIBRARY(pcre2-16-shared SHARED ${PCRE2_SOURCES})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-16-shared PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     SET_TARGET_PROPERTIES(pcre2-16-shared PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=16
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
+@@ -847,8 +863,10 @@ ENDIF(PCRE2_BUILD_PCRE2_16)
+
+ IF(PCRE2_BUILD_PCRE2_32)
+   IF(BUILD_STATIC_LIBS)
+-    ADD_LIBRARY(pcre2-32-static STATIC ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-32-static PUBLIC ${PROJECT_BINARY_DIR})
++    ADD_LIBRARY(pcre2-32-static STATIC ${PCRE2_SOURCES})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-32-static PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     SET_TARGET_PROPERTIES(pcre2-32-static PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=32
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
+@@ -872,8 +890,10 @@ IF(PCRE2_BUILD_PCRE2_32)
+   ENDIF(BUILD_STATIC_LIBS)
+
+   IF(BUILD_SHARED_LIBS)
+-    ADD_LIBRARY(pcre2-32-shared SHARED ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+-    TARGET_INCLUDE_DIRECTORIES(pcre2-32-shared PUBLIC ${PROJECT_BINARY_DIR})
++    ADD_LIBRARY(pcre2-32-shared SHARED ${PCRE2_SOURCES})
++    TARGET_INCLUDE_DIRECTORIES(pcre2-32-shared PUBLIC
++      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
++      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+     SET_TARGET_PROPERTIES(pcre2-32-shared PROPERTIES
+       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=32
+       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
+@@ -944,13 +964,11 @@ IF(PCRE2_BUILD_TESTS)
+
+   IF(PCRE2_BUILD_PCRE2_8)
+     ADD_EXECUTABLE(pcre2posix_test src/pcre2posix_test.c)
+-    SET(targets ${targets} pcre2posix_test)
+     TARGET_LINK_LIBRARIES(pcre2posix_test pcre2-posix pcre2-8)
+   ENDIF(PCRE2_BUILD_PCRE2_8)
+
+   IF(PCRE2_SUPPORT_JIT)
+     ADD_EXECUTABLE(pcre2_jit_test src/pcre2_jit_test.c)
+-    SET(targets ${targets} pcre2_jit_test)
+     SET(PCRE2_JIT_TEST_LIBS)
+     IF(PCRE2_BUILD_PCRE2_8)
+       LIST(APPEND PCRE2_JIT_TEST_LIBS pcre2-8)
+@@ -1073,11 +1091,17 @@ ENDIF(PCRE2_BUILD_TESTS)
+ # Installation
+
+ SET(CMAKE_INSTALL_ALWAYS 1)
++set(TARGETS_EXPORT_NAME pcre2-targets)
+
+ INSTALL(TARGETS ${targets}
+-        RUNTIME DESTINATION bin
++        EXPORT ${TARGETS_EXPORT_NAME}
++        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+         LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+         ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
++INSTALL(EXPORT ${TARGETS_EXPORT_NAME}
++        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/pcre2
++        NAMESPACE pcre2::
++        FILE ${TARGETS_EXPORT_NAME}.cmake)
+ INSTALL(FILES ${pkg_config_files} DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+ INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/pcre2-config"
+   DESTINATION bin
+@@ -1089,11 +1113,12 @@ INSTALL(FILES ${PCRE2_HEADERS} ${PCRE2POSIX_HEADERS} DESTINATION include)
+ # CMake config files.
+ set(PCRE2_CONFIG_IN  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/pcre2-config.cmake.in)
+ set(PCRE2_CONFIG_OUT ${CMAKE_CURRENT_BINARY_DIR}/cmake/pcre2-config.cmake)
+-configure_file(${PCRE2_CONFIG_IN} ${PCRE2_CONFIG_OUT} @ONLY)
+-set(PCRE2_CONFIG_VERSION_IN  ${CMAKE_CURRENT_SOURCE_DIR}/cmake/pcre2-config-version.cmake.in)
++configure_package_config_file(${PCRE2_CONFIG_IN} ${PCRE2_CONFIG_OUT} INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/pcre2)
+ set(PCRE2_CONFIG_VERSION_OUT ${CMAKE_CURRENT_BINARY_DIR}/cmake/pcre2-config-version.cmake)
+-configure_file(${PCRE2_CONFIG_VERSION_IN} ${PCRE2_CONFIG_VERSION_OUT} @ONLY)
+-install(FILES ${PCRE2_CONFIG_OUT} ${PCRE2_CONFIG_VERSION_OUT} DESTINATION cmake)
++write_basic_package_version_file(${PCRE2_CONFIG_VERSION_OUT}
++                                 VERSION ${PCRE2_MAJOR}.${PCRE2_MINOR}.0
++                                 COMPATIBILITY SameMajorVersion)
++install(FILES ${PCRE2_CONFIG_OUT} ${PCRE2_CONFIG_VERSION_OUT} DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/pcre2)
+
+ FILE(GLOB html ${PROJECT_SOURCE_DIR}/doc/html/*.html)
+ FILE(GLOB man1 ${PROJECT_SOURCE_DIR}/doc/*.1)
+diff --git a/cmake/pcre2-config-version.cmake.in b/cmake/pcre2-config-version.cmake.in
+deleted file mode 100644
+index dac149e..0000000
+--- a/cmake/pcre2-config-version.cmake.in
++++ /dev/null
+@@ -1,15 +0,0 @@
+-set(PACKAGE_VERSION_MAJOR @PCRE2_MAJOR@)
+-set(PACKAGE_VERSION_MINOR @PCRE2_MINOR@)
+-set(PACKAGE_VERSION_PATCH 0)
+-set(PACKAGE_VERSION @PCRE2_MAJOR@.@PCRE2_MINOR@.0)
+-
+-# Check whether the requested PACKAGE_FIND_VERSION is compatible
+-if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION OR
+-   PACKAGE_VERSION_MAJOR GREATER PACKAGE_FIND_VERSION_MAJOR)
+-  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+-else()
+-  set(PACKAGE_VERSION_COMPATIBLE TRUE)
+-  if(PACKAGE_VERSION VERSION_EQUAL PACKAGE_FIND_VERSION)
+-    set(PACKAGE_VERSION_EXACT TRUE)
+-  endif()
+-endif()
+diff --git a/cmake/pcre2-config.cmake.in b/cmake/pcre2-config.cmake.in
+index b313d6d..3ee5aba 100644
+--- a/cmake/pcre2-config.cmake.in
++++ b/cmake/pcre2-config.cmake.in
+@@ -7,9 +7,13 @@
+ # -----------------
+ # To make use of the static library instead of the shared one, one needs
+ # to set the variable PCRE2_USE_STATIC_LIBS to ON before calling find_package.
++#
++# 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 +27,40 @@
+ #   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}/@TARGETS_EXPORT_NAME@.cmake")
+
+ # Set version
+-if (PCRE2_INCLUDE_DIR)
+-  set(PCRE2_VERSION "@PCRE2_MAJOR@.@PCRE2_MINOR@.0")
+-endif ()
++set(PCRE2_VERSION "@PCRE2_MAJOR@.@PCRE2_MINOR@.0")
+
+-# 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 or shared editions of the library exist,
++  # we mark that we found the package itself and the corresponding component.
++  if (TARGET pcre2::pcre2-${target}-static OR TARGET pcre2::pcre2-${target}-shared)
++    set(PCRE2_FOUND TRUE)
++    set(PCRE2_${component}_FOUND TRUE)
++  endif()
++  # If the static library exists and either PCRE2_USE_STATIC_LIBS
++  # is defined, or the dynamic library does not exist, use the static library.
++  if (TARGET pcre2::pcre2-${target}-static AND (PCRE2_USE_STATIC_LIBS OR NOT TARGET pcre2::pcre2-${target}-shared))
++    add_library(PCRE2::${component} ALIAS pcre2::pcre2-${target}-static)
++  # Otherwise use the dynamic library if it exists.
++  elseif(TARGET pcre2::pcre2-${target}-shared)
++    add_library(PCRE2::${component} ALIAS pcre2::pcre2-${target}-shared)
++  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 +79,5 @@ 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")