From 9571c57a0b166c19b80640295f4484f1c8eda7d1 Mon Sep 17 00:00:00 2001
From: Brecht Sanders <brecht@sanders.org>
Date: Wed, 1 Sep 2021 10:57:36 +0200
Subject: [PATCH] Changed CMakeLists.txt to generate .pc and .cmake files

---
 CMakeLists.txt                 | 37 +++++++++++++++++++---------------
 template.pc.in                 | 13 ++++++++++++
 templateConfig.cmake.in        | 33 ++++++++++++++++++++++++++++++
 templateConfigVersion.cmake.in | 12 +++++++++++
 4 files changed, 79 insertions(+), 16 deletions(-)
 create mode 100644 template.pc.in
 create mode 100644 templateConfig.cmake.in
 create mode 100644 templateConfigVersion.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3630123..ebd72ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,6 +13,7 @@ SET(XLSXIO_VER_MICRO ${CMAKE_MATCH_1})
 SET(XLSXIO_VER "${XLSXIO_VER_MAJOR}.${XLSXIO_VER_MINOR}.${XLSXIO_VER_MICRO}")
 UNSET(DUMMYVAR)
 UNSET(VERFILE)
+MESSAGE(STATUS "XLSX I/O library version: ${XLSXIO_VER}")
 
 # parameters
 OPTION(BUILD_STATIC "Build static libraries" ON)
@@ -30,7 +31,7 @@ ELSE()
 ENDIF()
 SET(EXPAT_DIR "" CACHE PATH "Path to the Expat library")
 
-# conditions
+# check conditions
 IF(NOT BUILD_STATIC AND NOT BUILD_SHARED)
   MESSAGE(FATAL_ERROR "Cannot build with both BUILD_STATIC and BUILD_SHARED disabled")
 ENDIF()
@@ -219,20 +220,24 @@ IF(MINGW AND BUILD_SHARED)
   ENDIF()
 ENDIF()
 
-# generate pkg-config .pc files
-IF (BUILD_PC_FILES)
-  STRING(REPLACE ";" " " LIBXLSXIO_WRITE_LIBS "${ANYZIP_LIBRARIES} ${THREADLIB}")
-  STRING(REGEX REPLACE "\([^ ]*\)[/\\]([^ /\\.]*).[^ ]*" "-L\\1 -l\\2" LIBXLSXIO_WRITE_LIBS "${LIBXLSXIO_WRITE_LIBS}")
-  CONFIGURE_FILE(libxlsxio_write.pc.in libxlsxio_write.pc @ONLY)
-  INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/libxlsxio_write.pc" DESTINATION lib/pkgconfig)
-  STRING(REPLACE ";" " " LIBXLSXIO_READ_LIBS "${ANYZIP_LIBRARIES} ${EXPAT_LIBRARIES}")
-  STRING(REGEX REPLACE "\([^ ]*\)[/\\]([^ /\\.]*).[^ ]*" "-L\\1 -l\\2" LIBXLSXIO_READ_LIBS "${LIBXLSXIO_READ_LIBS}")
-  CONFIGURE_FILE(libxlsxio_read.pc.in libxlsxio_read.pc @ONLY)
-  INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/libxlsxio_read.pc" DESTINATION lib/pkgconfig)
-  IF(WITH_WIDE)
-    STRING(REPLACE ";" " " LIBXLSXIO_READW_LIBS "${ANYZIP_LIBRARIES} ${EXPAT_LIBRARIES}")
-    STRING(REGEX REPLACE "\([^ ]*\)[/\\]([^ /\\.]*).[^ ]*" "-L\\1 -l\\2" LIBXLSXIO_READW_LIBS "${LIBXLSXIO_READW_LIBS}")
-    CONFIGURE_FILE(libxlsxio_readw.pc.in libxlsxio_readw.pc @ONLY)
-    INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/libxlsxio_readw.pc" DESTINATION lib/pkgconfig)
+# generate .cmake and .pc files
+MACRO(generate_and_install_config_files _NAME _DESC _LIBS _HEADER)
+  SET(XLSXIO_NAME "${_NAME}")
+  SET(XLSXIO_DESC "${_DESC}")
+  SET(XLSXIO_HEADER "${_HEADER}")
+  STRING(REGEX REPLACE "^lib\([^ ]*\)" "\\1" XLSXIO_LIB "${XLSXIO_NAME}")
+  STRING(REPLACE ";" " " XLSXIO_LDFLAGS "-l${XLSXIO_LIB} ${_LIBS}")
+  STRING(REGEX REPLACE "\([^ ]*\)[/\\]lib([^ /\\.]*).[^ ]*" "-L\\1 -l\\2" XLSXIO_LDFLAGS "${XLSXIO_LDFLAGS}")
+  CONFIGURE_FILE(templateConfig.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/${XLSXIO_NAME}Config.cmake" @ONLY)
+  CONFIGURE_FILE(templateConfigVersion.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/${XLSXIO_NAME}ConfigVersion.cmake" @ONLY)
+  INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/${XLSXIO_NAME}Config.cmake" "${CMAKE_CURRENT_BINARY_DIR}/${XLSXIO_NAME}ConfigVersion.cmake" DESTINATION cmake/)
+  IF (BUILD_PC_FILES)
+    CONFIGURE_FILE(template.pc.in "${CMAKE_CURRENT_BINARY_DIR}/${XLSXIO_NAME}.pc" @ONLY)
+    INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/${XLSXIO_NAME}.pc" DESTINATION lib/pkgconfig)
   ENDIF()
+ENDMACRO()
+generate_and_install_config_files("libxlsxio_write" "C library for writing .xlsx files" "${ANYZIP_LIBRARIES} ${THREADLIB}" "xlsxio_write.h")
+generate_and_install_config_files("libxlsxio_read" "C library for writing .xlsx files" "${ANYZIP_LIBRARIES} ${EXPAT_LIBRARIES}" "xlsxio_read.h")
+IF(WITH_WIDE)
+  generate_and_install_config_files("libxlsxio_readw" "C library for reading .xlsx files using wide characters" "${ANYZIP_LIBRARIES} ${EXPAT_LIBRARIES}" "xlsxio_read.h")
 ENDIF()
diff --git a/template.pc.in b/template.pc.in
new file mode 100644
index 0000000..f5c9593
--- /dev/null
+++ b/template.pc.in
@@ -0,0 +1,13 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: @XLSXIO_NAME@
+Version: @XLSXIO_VER@
+Description: @XLSXIO_DESC@
+URL: https://github.com/brechtsanders/xlsxio
+#Requires: 
+Cflags: -I${includedir}
+Libs: -L${libdir} @XLSXIO_LDFLAGS@
+#Libs.private: 
diff --git a/templateConfig.cmake.in b/templateConfig.cmake.in
new file mode 100644
index 0000000..d52fa18
--- /dev/null
+++ b/templateConfig.cmake.in
@@ -0,0 +1,33 @@
+# cmake version configuration file for @XLSXIO_NAME@
+GET_FILENAME_COMPONENT(XLSXIOREAD_ROOT "${CMAKE_CURRENT_LIST_FILE}" PATH)
+
+FIND_LIBRARY(
+  @XLSXIO_LIB@_LIBRARY @XLSXIO_LIB@
+  PATHS ${XLSXIOREAD_ROOT}/lib
+  PATH_SUFFIXES ${CMAKE_LIBRARY_ARCHITECTURE}
+  NO_DEFAULT_PATH
+  )
+IF(NOT @XLSXIO_LIB@_LIBRARY)
+  MESSAGE(FATAL_ERROR "cannot find @XLSXIO_LIB@ library in ${MUPARSERX_ROOT}/lib")
+ENDIF()
+SET(@XLSXIO_LIB@_LIBRARIES ${@XLSXIO_LIB@_LIBRARY} @XLSXIO_LDFLAGS@)
+
+FIND_PATH(
+  @XLSXIO_LIB@_INCLUDE_DIR @XLSXIO_HEADER@
+  PATHS ${@XLSXIO_LIB@_ROOT}/include
+  NO_DEFAULT_PATH
+)
+IF(NOT @XLSXIO_LIB@_INCLUDE_DIR)
+  MESSAGE(FATAL_ERROR "cannot find @XLSXIO_LIB@ includes in ${@XLSXIO_LIB@_ROOT}/include/@XLSXIO_LIB@")
+ENDIF()
+SET(@XLSXIO_LIB@_INCLUDE_DIRS ${@XLSXIO_LIB@_INCLUDE_DIR})
+
+
+
+#set(FOOBAR_INCLUDE_DIRS "@CONF_INCLUDE_DIRS@")
+
+## Our library dependencies (contains definitions for IMPORTED targets)
+#if(NOT TARGET xlsxio_read_SHARED AND NOT FooBar_BINARY_DIR)
+#  include("${XLSXIOREAD_ROOT}/FooBarTargets.cmake")
+#endif()
+
diff --git a/templateConfigVersion.cmake.in b/templateConfigVersion.cmake.in
new file mode 100644
index 0000000..241a305
--- /dev/null
+++ b/templateConfigVersion.cmake.in
@@ -0,0 +1,12 @@
+# cmake version configuration file for @XLSXIO_NAME@
+set(PACKAGE_VERSION "@XLSXIO_VER@")
+
+# check whether the requested PACKAGE_FIND_VERSION is compatible
+if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}")
+  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()