Apply Jan-Willem Blokland's CMake patches to build both static and shared

libraries, plus some other CMake extensions.

CMakeLists.txt

@@ -94,6 +94,9 @@
 # 2020-04-28 PH added function check for memfd_create based on Carlo's patch
 # 2020-05-25 PH added a check for Intel CET
 # 2020-12-03 PH altered the definition of pcre2test as suggested by Daniel
+# 2021-06-29 JWSB added the option to build static library with PIC.
+# 2021-07-05 JWSB modified such both the static and shared library can be
+#            build in one go.
 
 PROJECT(PCRE2 C)
 
@@ -172,8 +175,9 @@ ENDIF(INTEL_CET_ENABLED)
 # Note: CMakeSetup displays these in alphabetical order, regardless of
 # the order we use here.
 
-SET(BUILD_SHARED_LIBS OFF CACHE BOOL
+SET(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared libraries.")
-    "Build shared libraries instead of static ones.")
+
+OPTION(BUILD_STATIC_LIBS "Build static libraries." ON)
 
 OPTION(PCRE2_BUILD_PCRE2_8 "Build 8 bit PCRE2 library" ON)
 
@@ -181,6 +185,8 @@ OPTION(PCRE2_BUILD_PCRE2_16 "Build 16 bit PCRE2 library" OFF)
 
 OPTION(PCRE2_BUILD_PCRE2_32 "Build 32 bit PCRE2 library" OFF)
 
+OPTION(PCRE2_STATIC_PIC "Build the static library with the option position independent code enabled." OFF)
+
 OPTION(PCRE2_DEBUG "Include debugging code" OFF)
 
 OPTION(PCRE2_DISABLE_PERCENT_ZT "Disable the use of %zu and %td (rarely needed)" OFF)
@@ -306,9 +312,9 @@ ENDIF(PCRE2_SUPPORT_LIBREADLINE)
 
 # Prepare build configuration
 
-IF(NOT BUILD_SHARED_LIBS)
+IF(NOT BUILD_SHARED_LIBS AND NOT BUILD_STATIC_LIBS)
-        SET(PCRE2_STATIC 1)
+        MESSAGE(FATAL_ERROR "At least one of BUILD_SHARED_LIBS or BUILD_STATIC_LIBS must be enabled.")
-ENDIF(NOT BUILD_SHARED_LIBS)
+ENDIF(NOT BUILD_SHARED_LIBS AND NOT BUILD_STATIC_LIBS)
 
 IF(NOT PCRE2_BUILD_PCRE2_8 AND NOT PCRE2_BUILD_PCRE2_16 AND NOT PCRE2_BUILD_PCRE2_32)
         MESSAGE(FATAL_ERROR "At least one of PCRE2_BUILD_PCRE2_8, PCRE2_BUILD_PCRE2_16 or PCRE2_BUILD_PCRE2_32 must be enabled")
@@ -597,39 +603,35 @@ SET(PCRE2_SOURCES
 SET(PCRE2POSIX_HEADERS src/pcre2posix.h)
 SET(PCRE2POSIX_SOURCES src/pcre2posix.c)
 
-IF(MINGW AND NOT PCRE2_STATIC)
+IF(MINGW AND BUILD_SHARED_LIBS)
   IF (EXISTS ${PROJECT_SOURCE_DIR}/pcre2.rc)
     ADD_CUSTOM_COMMAND(OUTPUT ${PROJECT_SOURCE_DIR}/pcre2.o
       PRE-LINK
       COMMAND windres ARGS pcre2.rc pcre2.o
       WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
       COMMENT Using pcre2 coff info in mingw build)
-SET(PCRE2_SOURCES
+    SET(PCRE2_SOURCES ${PCRE2_SOURCES} ${PROJECT_SOURCE_DIR}/pcre2.o)
-  ${PCRE2_SOURCES} ${PROJECT_SOURCE_DIR}/pcre2.o
-)
   ENDIF(EXISTS ${PROJECT_SOURCE_DIR}/pcre2.rc)
+
   IF (EXISTS ${PROJECT_SOURCE_DIR}/pcre2posix.rc)
     ADD_CUSTOM_COMMAND(OUTPUT ${PROJECT_SOURCE_DIR}/pcre2posix.o
       PRE-LINK
       COMMAND windres ARGS pcre2posix.rc pcre2posix.o
       WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
       COMMENT Using pcre2posix coff info in mingw build)
-SET(PCRE2POSIX_SOURCES
+    SET(PCRE2POSIX_SOURCES ${PCRE2POSIX_SOURCES} ${PROJECT_SOURCE_DIR}/pcre2posix.o)
-  ${PCRE2POSIX_SOURCES} ${PROJECT_SOURCE_DIR}/pcre2posix.o
-)
   ENDIF(EXISTS ${PROJECT_SOURCE_DIR}/pcre2posix.rc)
-ENDIF(MINGW AND NOT PCRE2_STATIC)
+ENDIF(MINGW AND BUILD_SHARED_LIBS)
 
-IF(MSVC AND NOT PCRE2_STATIC)
+IF(MSVC AND BUILD_SHARED_LIBS)
   IF (EXISTS ${PROJECT_SOURCE_DIR}/pcre2.rc)
-SET(PCRE2_SOURCES
+    SET(PCRE2_SOURCES ${PCRE2_SOURCES} pcre2.rc)
-  ${PCRE2_SOURCES} pcre2.rc)
   ENDIF(EXISTS ${PROJECT_SOURCE_DIR}/pcre2.rc)
+
   IF (EXISTS ${PROJECT_SOURCE_DIR}/pcre2posix.rc)
-SET(PCRE2POSIX_SOURCES
+    SET(PCRE2POSIX_SOURCES ${PCRE2POSIX_SOURCES} pcre2posix.rc)
-  ${PCRE2POSIX_SOURCES} pcre2posix.rc)
   ENDIF (EXISTS ${PROJECT_SOURCE_DIR}/pcre2posix.rc)
-ENDIF(MSVC AND NOT PCRE2_STATIC)
+ENDIF(MSVC AND BUILD_SHARED_LIBS)
 
 # Fix static compilation with MSVC: https://bugs.exim.org/show_bug.cgi?id=1681
 # This code was taken from the CMake wiki, not from WebM.
@@ -658,76 +660,181 @@ SET(targets)
 # 8-bit library
 
 IF(PCRE2_BUILD_PCRE2_8)
-ADD_LIBRARY(pcre2-8 ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+  IF(BUILD_STATIC_LIBS)
-SET_TARGET_PROPERTIES(pcre2-8 PROPERTIES
+    ADD_LIBRARY(pcre2-8-static STATIC ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+    SET_TARGET_PROPERTIES(pcre2-8-static PROPERTIES
       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_8_MACHO_COMPATIBILITY_VERSION}"
       MACHO_CURRENT_VERSION "${LIBPCRE2_8_MACHO_CURRENT_VERSION}"
       VERSION ${LIBPCRE2_8_VERSION}
       SOVERSION ${LIBPCRE2_8_SOVERSION})
-SET(targets ${targets} pcre2-8)
+    TARGET_COMPILE_DEFINITIONS(pcre2-8-static PUBLIC PCRE2_STATIC)
-ADD_LIBRARY(pcre2-posix ${PCRE2POSIX_HEADERS} ${PCRE2POSIX_SOURCES})
+    SET(targets ${targets} pcre2-8-static)
-SET_TARGET_PROPERTIES(pcre2-posix PROPERTIES
+    ADD_LIBRARY(pcre2-posix-static STATIC ${PCRE2POSIX_HEADERS} ${PCRE2POSIX_SOURCES})
+    SET_TARGET_PROPERTIES(pcre2-posix-static PROPERTIES
       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_POSIX_MACHO_COMPATIBILITY_VERSION}"
       MACHO_CURRENT_VERSION "${LIBPCRE2_POSIX_MACHO_CURRENT_VERSION}"
       VERSION ${LIBPCRE2_POSIX_VERSION}
       SOVERSION ${LIBPCRE2_POSIX_SOVERSION})
-SET(targets ${targets} pcre2-posix)
+    TARGET_LINK_LIBRARIES(pcre2-posix-static pcre2-8-static)
-TARGET_LINK_LIBRARIES(pcre2-posix pcre2-8)
+    TARGET_COMPILE_DEFINITIONS(pcre2-posix-static PUBLIC PCRE2_STATIC)
+    SET(targets ${targets} pcre2-posix-static)
 
-IF(MINGW AND NOT PCRE2_STATIC)
+    IF(MSVC)
+      SET_TARGET_PROPERTIES(pcre2-8-static PROPERTIES OUTPUT_NAME pcre2-8-static)
+      SET_TARGET_PROPERTIES(pcre2-posix-static PROPERTIES OUTPUT_NAME pcre2-posix-static)
+    ELSE(MSVC)
+      SET_TARGET_PROPERTIES(pcre2-8-static PROPERTIES OUTPUT_NAME pcre2-8)
+      SET_TARGET_PROPERTIES(pcre2-posix-static PROPERTIES OUTPUT_NAME pcre2-posix)
+    ENDIF(MSVC)
+    IF(PCRE2_STATIC_PIC)
+      SET_TARGET_PROPERTIES(pcre2-8-static pcre2-posix-static PROPERTIES POSITION_INDEPENDENT_CODE 1)
+    ENDIF(PCRE2_STATIC_PIC)
+  ENDIF(BUILD_STATIC_LIBS)
+
+  IF(BUILD_SHARED_LIBS)
+    ADD_LIBRARY(pcre2-8-shared SHARED ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+    SET_TARGET_PROPERTIES(pcre2-8-shared PROPERTIES
+      COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
+      MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_8_MACHO_COMPATIBILITY_VERSION}"
+      MACHO_CURRENT_VERSION "${LIBPCRE2_8_MACHO_CURRENT_VERSION}"
+      VERSION ${LIBPCRE2_8_VERSION}
+      SOVERSION ${LIBPCRE2_8_SOVERSION}
+      OUTPUT_NAME pcre2-8)
+    SET(targets ${targets} pcre2-8-shared)
+    ADD_LIBRARY(pcre2-posix-shared SHARED ${PCRE2POSIX_HEADERS} ${PCRE2POSIX_SOURCES})
+    SET_TARGET_PROPERTIES(pcre2-posix-shared PROPERTIES
+      COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=8
+      MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_POSIX_MACHO_COMPATIBILITY_VERSION}"
+      MACHO_CURRENT_VERSION "${LIBPCRE2_POSIX_MACHO_CURRENT_VERSION}"
+      VERSION ${LIBPCRE2_POSIX_VERSION}
+      SOVERSION ${LIBPCRE2_POSIX_SOVERSION}
+      OUTPUT_NAME pcre2-posix)
+    TARGET_LINK_LIBRARIES(pcre2-posix-shared pcre2-8-shared)
+    SET(targets ${targets} pcre2-posix-shared)
+
+    IF(MINGW)
       IF(NON_STANDARD_LIB_PREFIX)
-    SET_TARGET_PROPERTIES(pcre2-8 pcre2-posix PROPERTIES PREFIX "")
+        SET_TARGET_PROPERTIES(pcre2-8-shared pcre2-posix-shared PROPERTIES PREFIX "")
       ENDIF(NON_STANDARD_LIB_PREFIX)
       IF(NON_STANDARD_LIB_SUFFIX)
-    SET_TARGET_PROPERTIES(pcre2-8 pcre2-posix PROPERTIES SUFFIX "-0.dll")
+        SET_TARGET_PROPERTIES(pcre2-8-shared pcre2-posix-shared PROPERTIES SUFFIX "-0.dll")
       ENDIF(NON_STANDARD_LIB_SUFFIX)
-ENDIF(MINGW AND NOT PCRE2_STATIC)
+    ENDIF(MINGW)
+  ENDIF(BUILD_SHARED_LIBS)
+
+  IF(BUILD_STATIC_LIBS)
+    ADD_LIBRARY(pcre2-8 ALIAS pcre2-8-static)
+    ADD_LIBRARY(pcre2-posix ALIAS pcre2-posix-static)
+  ELSE(BUILD_STATIC_LIBS)
+    ADD_LIBRARY(pcre2-8 ALIAS pcre2-8-shared)
+    ADD_LIBRARY(pcre2-posix ALIAS pcre2-posix-shared)
+  ENDIF(BUILD_STATIC_LIBS)
 ENDIF(PCRE2_BUILD_PCRE2_8)
 
 # 16-bit library
 
 IF(PCRE2_BUILD_PCRE2_16)
-ADD_LIBRARY(pcre2-16 ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+  IF(BUILD_STATIC_LIBS)
-SET_TARGET_PROPERTIES(pcre2-16 PROPERTIES
+    ADD_LIBRARY(pcre2-16-static STATIC ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+    SET_TARGET_PROPERTIES(pcre2-16-static PROPERTIES
       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=16
       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
       MACHO_CURRENT_VERSION "${LIBPCRE2_32_MACHO_CURRENT_VERSION}"
       VERSION ${LIBPCRE2_16_VERSION}
       SOVERSION ${LIBPCRE2_16_SOVERSION})
-SET(targets ${targets} pcre2-16)
+    TARGET_COMPILE_DEFINITIONS(pcre2-16-static PUBLIC PCRE2_STATIC)
+    SET(targets ${targets} pcre2-16-static)
 
-IF(MINGW AND NOT PCRE2_STATIC)
+    IF(MSVC)
+      SET_TARGET_PROPERTIES(pcre2-16-static PROPERTIES OUTPUT_NAME pcre2-16-static)
+    ELSE(MSVC)
+      SET_TARGET_PROPERTIES(pcre2-16-static PROPERTIES OUTPUT_NAME pcre2-16)
+    ENDIF(MSVC)
+    IF(PCRE2_STATIC_PIC)
+      SET_TARGET_PROPERTIES(pcre2-16-static PROPERTIES POSITION_INDEPENDENT_CODE 1)
+    ENDIF(PCRE2_STATIC_PIC)
+  ENDIF(BUILD_STATIC_LIBS)
+
+  IF(BUILD_SHARED_LIBS)
+    ADD_LIBRARY(pcre2-16-shared SHARED ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+    SET_TARGET_PROPERTIES(pcre2-16-shared PROPERTIES
+      COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=16
+      MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
+      MACHO_CURRENT_VERSION "${LIBPCRE2_32_MACHO_CURRENT_VERSION}"
+      VERSION ${LIBPCRE2_16_VERSION}
+      SOVERSION ${LIBPCRE2_16_SOVERSION}
+      OUTPUT_NAME pcre2-16)
+    SET(targets ${targets} pcre2-16-shared)
+
+    IF(MINGW)
       IF(NON_STANDARD_LIB_PREFIX)
-    SET_TARGET_PROPERTIES(pcre2-16 PROPERTIES PREFIX "")
+        SET_TARGET_PROPERTIES(pcre2-16-shared PROPERTIES PREFIX "")
       ENDIF(NON_STANDARD_LIB_PREFIX)
       IF(NON_STANDARD_LIB_SUFFIX)
-    SET_TARGET_PROPERTIES(pcre2-16 PROPERTIES SUFFIX "-0.dll")
+        SET_TARGET_PROPERTIES(pcre2-16-shared PROPERTIES SUFFIX "-0.dll")
       ENDIF(NON_STANDARD_LIB_SUFFIX)
-ENDIF(MINGW AND NOT PCRE2_STATIC)
+    ENDIF(MINGW)
+  ENDIF(BUILD_SHARED_LIBS)
+
+  IF(BUILD_STATIC_LIBS)
+    ADD_LIBRARY(pcre2-16 ALIAS pcre2-16-static)
+  ELSE(BUILD_STATIC_LIBS)
+    ADD_LIBRARY(pcre2-16 ALIAS pcre2-16-shared)
+  ENDIF(BUILD_STATIC_LIBS)
 ENDIF(PCRE2_BUILD_PCRE2_16)
 
 # 32-bit library
 
 IF(PCRE2_BUILD_PCRE2_32)
-ADD_LIBRARY(pcre2-32 ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+  IF(BUILD_STATIC_LIBS)
-SET_TARGET_PROPERTIES(pcre2-32 PROPERTIES
+    ADD_LIBRARY(pcre2-32-static STATIC ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+    SET_TARGET_PROPERTIES(pcre2-32-static PROPERTIES
       COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=32
       MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
       MACHO_CURRENT_VERSION "${LIBPCRE2_32_MACHO_CURRENT_VERSION}"
       VERSION ${LIBPCRE2_32_VERSION}
       SOVERSION ${LIBPCRE2_32_SOVERSION})
-SET(targets ${targets} pcre2-32)
+    TARGET_COMPILE_DEFINITIONS(pcre2-32-static PUBLIC PCRE2_STATIC)
+    SET(targets ${targets} pcre2-32-static)
 
-IF(MINGW AND NOT PCRE2_STATIC)
+    IF(MSVC)
+      SET_TARGET_PROPERTIES(pcre2-32-static PROPERTIES OUTPUT_NAME pcre2-32-static)
+    ELSE(MSVC)
+      SET_TARGET_PROPERTIES(pcre2-32-static PROPERTIES OUTPUT_NAME pcre2-32)
+    ENDIF(MSVC)
+    IF(PCRE2_STATIC_PIC)
+      SET_TARGET_PROPERTIES(pcre2-32-static PROPERTIES POSITION_INDEPENDENT_CODE 1)
+    ENDIF(PCRE2_STATIC_PIC)
+  ENDIF(BUILD_STATIC_LIBS)
+
+  IF(BUILD_SHARED_LIBS)
+    ADD_LIBRARY(pcre2-32-shared SHARED ${PCRE2_HEADERS} ${PCRE2_SOURCES} ${PROJECT_BINARY_DIR}/config.h)
+    SET_TARGET_PROPERTIES(pcre2-32-shared PROPERTIES
+      COMPILE_DEFINITIONS PCRE2_CODE_UNIT_WIDTH=32
+      MACHO_COMPATIBILITY_VERSION "${LIBPCRE2_32_MACHO_COMPATIBILITY_VERSION}"
+      MACHO_CURRENT_VERSION "${LIBPCRE2_32_MACHO_CURRENT_VERSION}"
+      VERSION ${LIBPCRE2_32_VERSION}
+      SOVERSION ${LIBPCRE2_32_SOVERSION}
+      OUTPUT_NAME pcre2-32)
+    SET(targets ${targets} pcre2-32-shared)
+
+    IF(MINGW)
       IF(NON_STANDARD_LIB_PREFIX)
-    SET_TARGET_PROPERTIES(pcre2-32 PROPERTIES PREFIX "")
+        SET_TARGET_PROPERTIES(pcre2-32-shared PROPERTIES PREFIX "")
       ENDIF(NON_STANDARD_LIB_PREFIX)
       IF(NON_STANDARD_LIB_SUFFIX)
-    SET_TARGET_PROPERTIES(pcre2-32 PROPERTIES SUFFIX "-0.dll")
+        SET_TARGET_PROPERTIES(pcre2-32-shared PROPERTIES SUFFIX "-0.dll")
       ENDIF(NON_STANDARD_LIB_SUFFIX)
-ENDIF(MINGW AND NOT PCRE2_STATIC)
+    ENDIF(MINGW)
+  ENDIF(BUILD_SHARED_LIBS)
+
+  IF(BUILD_STATIC_LIBS)
+    ADD_LIBRARY(pcre2-32 ALIAS pcre2-32-static)
+  ELSE(BUILD_STATIC_LIBS)
+    ADD_LIBRARY(pcre2-32 ALIAS pcre2-32-shared)
+  ENDIF(BUILD_STATIC_LIBS)
 ENDIF(PCRE2_BUILD_PCRE2_32)
 
 # Executables
@@ -900,6 +1007,15 @@ INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/pcre2-config"
 
 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)
+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)
+
 FILE(GLOB html ${PROJECT_SOURCE_DIR}/doc/html/*.html)
 FILE(GLOB man1 ${PROJECT_SOURCE_DIR}/doc/*.1)
 FILE(GLOB man3 ${PROJECT_SOURCE_DIR}/doc/*.3)
@@ -926,11 +1042,11 @@ IF(MSVC AND INSTALL_MSVC_PDB)
 ENDIF(MSVC AND INSTALL_MSVC_PDB)
 
 # Help, only for nice output
-IF(BUILD_SHARED_LIBS)
+IF(BUILD_STATIC_LIBS)
-  SET(BUILD_STATIC_LIBS OFF)
-ELSE(BUILD_SHARED_LIBS)
   SET(BUILD_STATIC_LIBS ON)
-ENDIF(BUILD_SHARED_LIBS)
+ELSE(BUILD_STATIC_LIBS)
+  SET(BUILD_STATIC_LIBS OFF)
+ENDIF(BUILD_STATIC_LIBS)
 
 IF(PCRE2_HEAP_MATCH_RECURSE)
   MESSAGE(WARNING "HEAP_MATCH_RECURSE is obsolete and does nothing.")
@@ -968,6 +1084,7 @@ IF(PCRE2_SHOW_REPORT)
   MESSAGE(STATUS "  Match depth limit ............... : ${PCRE2_MATCH_LIMIT_DEPTH}")
   MESSAGE(STATUS "  Build shared libs ............... : ${BUILD_SHARED_LIBS}")
   MESSAGE(STATUS "  Build static libs ............... : ${BUILD_STATIC_LIBS}")
+  MESSAGE(STATUS "     with PIC enabled ............. : ${PCRE2_STATIC_PIC}")
   MESSAGE(STATUS "  Build pcre2grep ................. : ${PCRE2_BUILD_PCRE2GREP}")
   MESSAGE(STATUS "  Enable JIT in pcre2grep ......... : ${PCRE2GREP_SUPPORT_JIT}")
   MESSAGE(STATUS "  Enable callouts in pcre2grep .... : ${PCRE2GREP_SUPPORT_CALLOUT}")
@@ -1002,10 +1119,10 @@ IF(PCRE2_SHOW_REPORT)
     MESSAGE(STATUS "  Use %zu and %td ..................: AUTO" )
   ENDIF(PCRE2_DISABLE_PERCENT_ZT)
 
-  IF(MINGW AND NOT PCRE2_STATIC)
+  IF(MINGW AND BUILD_SHARED_LIBS)
     MESSAGE(STATUS "  Non-standard dll names (prefix) . : ${NON_STANDARD_LIB_PREFIX}")
     MESSAGE(STATUS "  Non-standard dll names (suffix) . : ${NON_STANDARD_LIB_SUFFIX}")
-  ENDIF(MINGW AND NOT PCRE2_STATIC)
+  ENDIF(MINGW AND BUILD_SHARED_LIBS)
 
   IF(MSVC)
     MESSAGE(STATUS "  Install MSVC .pdb files ..........: ${INSTALL_MSVC_PDB}")

ChangeLog

@@ -8,6 +8,32 @@ Version 10.38-RC1 xx-xxx-2021
 is inside a capturing bracket and the bracket is preceeded by character
 literals.
 
+2. Installed revised CMake configuration files provided by Jan-Willem Blokland. 
+This extends the CMake build system to build both static and shared libraries
+in one go, builds the static library with PIC, and exposes PCRE2 libraries
+using the CMake config files. JWB provided these notes:
+
+- Introduced CMake variable BUILD_STATIC_LIBS to build the static library.
+
+- Make a small modification to config-cmake.h.in by removing the PCRE2_STATIC 
+  variable. Added PCRE2_STATIC variable to the static build using the
+  target_compile_definitions() function.
+
+- Extended the CMake config files.
+
+  - Introduced CMake variable PCRE2_USE_STATIC_LIBS to easily switch between
+    the static and shared libraries.
+
+  - Added the PCRE_STATIC variable to the target compile definitions for the 
+    import of the static library.
+
+Building static and shared libraries using MSVC results in a name clash of
+the libraries. Both static and shared library builds create, for example, the
+file pcre2-8.lib. Therefore, I decided to change the static library names by
+adding "-static". For example, pcre2-8.lib has become pcre2-8-static.lib.
+[Comment by PH: this seems to be MSVC-specific. It doesn't happen on Linux.]
+
+
 
 Version 10.37 26-May-2021
 -------------------------

Makefile.am

@@ -859,9 +859,11 @@ endif # WITH_GCOV
 
 EXTRA_DIST += \
   cmake/COPYING-CMAKE-SCRIPTS \
+  cmake/FindEditline.cmake \
   cmake/FindPackageHandleStandardArgs.cmake \
   cmake/FindReadline.cmake \
-  cmake/FindEditline.cmake \
+  cmake/pcre2-config-version.cmake.in \
+  cmake/pcre2-config.cmake.in \
   CMakeLists.txt \
   config-cmake.h.in
 

cmake/pcre2-config-version.cmake.in

@@ -0,0 +1,15 @@
+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()

cmake/pcre2-config.cmake.in

@@ -0,0 +1,145 @@
+# pcre2-config.cmake
+# ----------------
+#
+# Finds the PCRE2 library, specify the starting search path in PCRE2_ROOT.
+#
+# Static vs. shared
+# -----------------
+# 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.
+# Example:
+#   set(PCRE2_USE_STATIC_LIBS ON)
+#   find_package(PCRE2 CONFIG COMPONENTS 8BIT)
+#
+# This will define the following variables:
+#
+#   PCRE2_FOUND   - True if the system has the PCRE2 library.
+#   PCRE2_VERSION - The version of the PCRE2 library which was found.
+#
+# and the following imported targets:
+#
+#   PCRE2::8BIT  - The 8 bit PCRE2 library.
+#   PCRE2::16BIT - The 16 bit PCRE2 library.
+#   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 ()
+
+  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 ()
+
+  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)
+
+# Set version
+if (PCRE2_INCLUDE_DIR)
+  set(PCRE2_VERSION "@PCRE2_MAJOR@.@PCRE2_MINOR@.0")
+endif ()
+
+# 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)
+
+# When POSIX component has been specified make sure that also 8BIT component is specified.
+set(PCRE2_8BIT_COMPONENT FALSE)
+set(PCRE2_POSIX_COMPONENT FALSE)
+foreach(component ${PCRE2_FIND_COMPONENTS})
+  if (component STREQUAL "8BIT")
+    set(PCRE2_8BIT_COMPONENT TRUE)
+  elseif (component STREQUAL "POSIX")
+    set(PCRE2_POSIX_COMPONENT TRUE)
+  endif ()
+endforeach()
+
+if (PCRE2_POSIX_COMPONENT AND NOT PCRE2_8BIT_COMPONENT)
+  message(FATAL_ERROR "The component POSIX is specified while the 8BIT one is not. This is not allowed. Please, also specify the 8BIT component.")
+endif()
+unset(PCRE2_8BIT_COMPONENT)
+unset(PCRE2_POSIX_COMPONENT)
+
+include(FindPackageHandleStandardArgs)
+set(${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
+)

config-cmake.h.in

@@ -16,8 +16,6 @@
 #cmakedefine HAVE_SECURE_GETENV 1
 #cmakedefine HAVE_STRERROR 1
 
-#cmakedefine PCRE2_STATIC 1
-
 #cmakedefine SUPPORT_PCRE2_8 1
 #cmakedefine SUPPORT_PCRE2_16 1
 #cmakedefine SUPPORT_PCRE2_32 1