Fix pkgconfig install path on package

Author: spk

CMakeLists.txt

@@ -205,7 +205,7 @@ if (NOT BIN_INSTALL_DIR)
 endif ()
 
 if (NOT INCLUDE_INSTALL_DIR)
-    set(INCLUDE_INSTALL_DIR include)
+    set(INCLUDE_INSTALL_DIR include/${LIB_NAME})
 endif ()
 
 # Always build the STATIC library
@@ -408,16 +408,14 @@ endif ()
 include(CPack)
 
 # pkg-config
-set(INSTALL_LIBDIR "${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}" CACHE PATH "Installation directory for libraries")
-set(INSTALL_INCDIR "${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}" CACHE PATH "Installation directory for headers")
 configure_file(
     "${CMAKE_CURRENT_SOURCE_DIR}/${LIB_NAME}.pc.cmake.in"
     "${CMAKE_CURRENT_BINARY_DIR}/${LIB_NAME}.pc"
     @ONLY
     )
 install(FILES
     "${CMAKE_CURRENT_BINARY_DIR}/${LIB_NAME}.pc"
-    DESTINATION "${INSTALL_LIBDIR}/pkgconfig"
+    DESTINATION "${LIB_INSTALL_DIR}/pkgconfig"
     )
 
 # eof

README/BUILD.md

@@ -40,6 +40,14 @@ If you do **not** need the tidy library built as a 'shared' (DLL) library, then
 
 See the `CMakeLists.txt` file for other CMake **options** offered.
 
+## Build the tidy packages
+
+  1. `cd build/cmake`
+
+  2. `cmake ../.. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr`
+
+  3. Unix/OS X: `make package`
+
 ## Build PHP with the tidy-html5 library
 
 Due to API changes in the PHP source, `buffio.h` needs to be renamed to `tidybuffio.h` in the file `ext/tidy/tidy.c` in PHP's source.

tidy.pc.cmake.in

@@ -1,5 +1,7 @@
-libdir=@INSTALL_LIBDIR@
-includedir=@INSTALL_INCDIR@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/@LIB_INSTALL_DIR@
+includedir=${prefix}/@INCLUDE_INSTALL_DIR@
 
 Name: @LIB_NAME@
 Description: @LIBTIDY_DESCRIPTION@