cmake: make pkg-config optional

fluidsynth/CMakeLists.txt

@@ -58,6 +58,7 @@ option ( enable-fpe-check "enable Floating Point Exception checks and debug mess
 option ( enable-debug "enable debugging (default=no)" off )
 
 # Options enabled by default
+option ( enable-pkgconfig "use pkg-config to locate fluidsynth's (mostly optional) dependencies" on )
 option ( enable-libsndfile "compile libsndfile support (if it is available)" on )
 option ( enable-aufile "compile support for sound file output" on )
 option ( enable-pulseaudio "compile PulseAudio support (if it is available)" on )
@@ -160,8 +161,8 @@ if ( WIN32 )
   check_include_files ( "windows.h;mmsystem.h" HAVE_MMSYSTEM_H )
   set ( WINDOWS_SUPPORT ${HAVE_WINDOWS_H} )
   set ( WINDOWS_LIBS "dsound;winmm;ws2_32" )
-  set ( LIBFLUID_CPPFLAGS "-DFLUIDSYNTH_DLL_EXPORTS" )
   set ( FLUID_CPPFLAGS "-DFLUIDSYNTH_NOT_A_DLL" )
+  set ( LIBFLUID_CPPFLAGS "${FLUID_CPPFLAGS} -DFLUIDSYNTH_DLL_EXPORTS" )
   set ( CMAKE_DEBUG_POSTFIX "_debug" )
   # MinGW compiler (a Windows GCC port)
   if ( MINGW )
@@ -289,58 +290,118 @@ if ( CMAKE_BUILD_TYPE MATCHES "Debug" )
     set ( DEBUG 1 )
 endif ( CMAKE_BUILD_TYPE MATCHES "Debug" )
 
-# Mandatory tool: pkg-config
-find_package ( PkgConfig REQUIRED )
 
-# Mandatory libraries: glib and gthread
+if(NOT enable-pkgconfig)
-pkg_check_modules ( GLIB REQUIRED glib-2.0>=2.6.5 gthread-2.0>=2.6.5 )
 
-include ( UnsetPkgConfig )
+    FIND_LIBRARY( GLIB_LIB NAMES glib glib-2.0 PATH GLIB_LIBRARY_DIR NO_DEFAULT_PATH)
+    FIND_LIBRARY( GTHREAD_LIB NAMES gthread gthread-2.0 PATH GTHREAD_LIBRARY_DIR NO_DEFAULT_PATH )
+    FIND_PATH( GLIBH_DIR glib.h PATH GLIB_INCLUDE_DIR NO_DEFAULT_PATH )
+    FIND_PATH( GLIBCONF_DIR glibconfig.h PATH GLIBCONF_INCLUDE_DIR NO_DEFAULT_PATH )
     
-# Optional features
+    IF( GLIB_LIB MATCHES "GLIB_LIB-NOTFOUND" OR
-unset ( LIBSNDFILE_SUPPORT CACHE )
+            GTHREAD_LIB MATCHES "GTHREAD_LIB-NOTFOUND" OR
-unset ( LIBSNDFILE_HASVORBIS CACHE )
+            GLIBH_DIR MATCHES "GLIBH_DIR-NOTFOUND" OR
-if ( enable-libsndfile )
+            GLIBCONF_DIR MATCHES "GLIBCONF_DIR-NOTFOUND")
-  pkg_check_modules ( LIBSNDFILE sndfile>=1.0.0 )
+            message( WARNING "Not sure if I found GLIB, continuing anyway.")
-  set ( LIBSNDFILE_SUPPORT ${LIBSNDFILE_FOUND} )
+    ENDIF()
-  if ( LIBSNDFILE_SUPPORT )
+    
-    pkg_check_modules ( LIBSNDFILE_VORBIS sndfile>=1.0.18 )
+    SET( GLIB_INCLUDE_DIRS ${GLIBH_DIR} ${GLIBCONF_DIR} )
-    set ( LIBSNDFILE_HASVORBIS ${LIBSNDFILE_VORBIS_FOUND} )
+    SET( GLIB_LIBRARIES ${GLIB_LIB} ${GTHREAD_LIB} )
-  endif ( LIBSNDFILE_SUPPORT )
+    
-else ( enable-libsndfile )
+    message( STATUS "GLIB_INCLUDE_DIRS: " ${GLIB_INCLUDE_DIRS} )
-  unset_pkg_config ( LIBSNDFILE )
+    message( STATUS "GLIB_LIBRARIES: " ${GLIB_LIBRARIES} )
-  unset_pkg_config ( LIBSNDFILE_VORBIS )
+
-endif ( enable-libsndfile )
+else(NOT enable-pkgconfig)
+
+    find_package ( PkgConfig REQUIRED )
+
+    # Mandatory libraries: glib and gthread
+    pkg_check_modules ( GLIB REQUIRED glib-2.0>=2.6.5 gthread-2.0>=2.6.5 )
+
+    include ( UnsetPkgConfig )
+
+    # Optional features
+    unset ( LIBSNDFILE_SUPPORT CACHE )
+    unset ( LIBSNDFILE_HASVORBIS CACHE )
+    if ( enable-libsndfile )
+    pkg_check_modules ( LIBSNDFILE sndfile>=1.0.0 )
+    set ( LIBSNDFILE_SUPPORT ${LIBSNDFILE_FOUND} )
+    if ( LIBSNDFILE_SUPPORT )
+        pkg_check_modules ( LIBSNDFILE_VORBIS sndfile>=1.0.18 )
+        set ( LIBSNDFILE_HASVORBIS ${LIBSNDFILE_VORBIS_FOUND} )
+    endif ( LIBSNDFILE_SUPPORT )
+    else ( enable-libsndfile )
+    unset_pkg_config ( LIBSNDFILE )
+    unset_pkg_config ( LIBSNDFILE_VORBIS )
+    endif ( enable-libsndfile )
+
+    unset ( PULSE_SUPPORT CACHE )
+    if ( enable-pulseaudio )
+    pkg_check_modules ( PULSE libpulse-simple>=0.9.8 )
+    set ( PULSE_SUPPORT ${PULSE_FOUND} )
+    else ( enable-pulseaudio )
+    unset_pkg_config ( PULSE )
+    endif ( enable-pulseaudio )
+
+    unset ( ALSA_SUPPORT CACHE )
+    if ( enable-alsa )
+    pkg_check_modules ( ALSA alsa>=0.9.1 )
+    set ( ALSA_SUPPORT ${ALSA_FOUND} )
+    else ( enable-alsa )
+    unset_pkg_config ( ALSA )
+    endif ( enable-alsa )
+
+    unset ( PORTAUDIO_SUPPORT CACHE )
+    if ( enable-portaudio )
+    pkg_check_modules ( PORTAUDIO portaudio-2.0>=19 )
+    set ( PORTAUDIO_SUPPORT ${PORTAUDIO_FOUND} )
+    else ( enable-portaudio )
+    unset_pkg_config ( PORTAUDIO )
+    endif ( enable-portaudio )
+    
+    unset ( JACK_SUPPORT CACHE )
+    if ( enable-jack )
+    pkg_check_modules ( JACK jack )
+    set ( JACK_SUPPORT ${JACK_FOUND} )
+    else ( enable-jack )
+    unset_pkg_config ( JACK )
+    endif ( enable-jack )
+    
+    unset ( LASH_SUPPORT CACHE )
+    if ( enable-lash )
+    pkg_check_modules ( LASH lash-1.0>=0.3 )
+    if ( LASH_FOUND )
+        set ( LASH_SUPPORT 1 )
+        add_definitions ( -DHAVE_LASH )
+    endif ( LASH_FOUND )
+    else ( enable-lash )
+    unset_pkg_config ( LASH )
+    remove_definitions( -DHAVE_LASH )
+    endif ( enable-lash )
+
+    unset ( LADCCA_SUPPORT CACHE )
+    if ( enable-ladcca )
+    pkg_check_modules ( LADCCA ladcca-1.0>=0.3 )
+    set ( LADCCA_SUPPORT ${LADCCA_FOUND} )
+    else ( enable-ladcca )
+    unset_pkg_config ( LADCCA )
+    endif ( enable-ladcca )
+
+    unset ( DBUS_SUPPORT CACHE )
+    if ( enable-dbus )
+    pkg_check_modules ( DBUS dbus-1>=1.0.0 )
+    set ( DBUS_SUPPORT ${DBUS_FOUND} )
+    else ( enable-dbus )
+    unset_pkg_config ( DBUS )
+    endif ( enable-dbus )
+    
+endif(NOT enable-pkgconfig)
 
 unset ( AUFILE_SUPPORT CACHE )
 if ( enable-aufile )
   set ( AUFILE_SUPPORT 1 )
 endif ( enable-aufile )
 
-unset ( PULSE_SUPPORT CACHE )
-if ( enable-pulseaudio )
-  pkg_check_modules ( PULSE libpulse-simple>=0.9.8 )
-  set ( PULSE_SUPPORT ${PULSE_FOUND} )
-else ( enable-pulseaudio )
-  unset_pkg_config ( PULSE )
-endif ( enable-pulseaudio )
-
-unset ( ALSA_SUPPORT CACHE )
-if ( enable-alsa )
-  pkg_check_modules ( ALSA alsa>=0.9.1 )
-  set ( ALSA_SUPPORT ${ALSA_FOUND} )
-else ( enable-alsa )
-  unset_pkg_config ( ALSA )
-endif ( enable-alsa )
-
-unset ( PORTAUDIO_SUPPORT CACHE )
-if ( enable-portaudio )
-  pkg_check_modules ( PORTAUDIO portaudio-2.0>=19 )
-  set ( PORTAUDIO_SUPPORT ${PORTAUDIO_FOUND} )
-else ( enable-portaudio )
-  unset_pkg_config ( PORTAUDIO )
-endif ( enable-portaudio )
-
 find_package ( OSS QUIET )
 set ( OSS_SUPPORT ${OSS_FOUND} )
 
@@ -352,14 +413,6 @@ else ( enable_midishare )
   unset ( MidiShare_LIBS CACHE )
 endif ( enable_midishare )
 
-unset ( JACK_SUPPORT CACHE )
-if ( enable-jack )
-  pkg_check_modules ( JACK jack )
-  set ( JACK_SUPPORT ${JACK_FOUND} )
-else ( enable-jack )
-  unset_pkg_config ( JACK )
-endif ( enable-jack )
-
 unset ( WITH_READLINE CACHE )
 if ( enable-readline )
   find_package ( Readline )
@@ -372,33 +425,6 @@ else ( enable-readline )
   unset ( READLINE_LIBS CACHE )
 endif ( enable-readline )
 
-unset ( LASH_SUPPORT CACHE )
-if ( enable-lash )
-  pkg_check_modules ( LASH lash-1.0>=0.3 )
-  if ( LASH_FOUND )
-    set ( LASH_SUPPORT 1 )
-    add_definitions ( -DHAVE_LASH )
-  endif ( LASH_FOUND )
-else ( enable-lash )
-  unset_pkg_config ( LASH )
-  remove_definitions( -DHAVE_LASH )
-endif ( enable-lash )
-
-unset ( LADCCA_SUPPORT CACHE )
-if ( enable-ladcca )
-  pkg_check_modules ( LADCCA ladcca-1.0>=0.3 )
-  set ( LADCCA_SUPPORT ${LADCCA_FOUND} )
-else ( enable-ladcca )
-  unset_pkg_config ( LADCCA )
-endif ( enable-ladcca )
-
-unset ( DBUS_SUPPORT CACHE )
-if ( enable-dbus )
-  pkg_check_modules ( DBUS dbus-1>=1.0.0 )
-  set ( DBUS_SUPPORT ${DBUS_FOUND} )
-else ( enable-dbus )
-  unset_pkg_config ( DBUS )
-endif ( enable-dbus )
 
 # General configuration file
 configure_file ( ${CMAKE_SOURCE_DIR}/src/config.cmake