Install a file for pkg-config

configure now generates to files for pkg-config:
znc.pc and znc-uninstalled.pc

This is supposed to replace the znc-config binary. Everything which can be done
with znc-config can now also be done with pkg-config.

znc-uninstalled.pc is only generated by configure, but not installed by the
Makefiles. It's there to fix some kind of bug we have with znc-config.

ZNC can run quite fine from the source, there is no need to ever run
"make install". The only problem is that e.g. znc-extra won't build, since
it gets -I/usr/local/include/znc from znc-config which doesn't work since znc
was never installed.

pkg-config has a nice fix for this: If you ask for "a", but "a-uninstalled"
exists, pkg-config will use the later one instead. This is used in
znc-uninstalled.pc to output a different -I flag which works for the
uninstalled headers.
(You only have to set $PKG_CONFIG_PATH to znc's source dir for this to work)


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1503 726aef4b-f618-498e-8847-2d620e286838

Makefile.in

@@ -18,6 +18,7 @@ LDFLAGS  := @LDFLAGS@
 LIBS     := @LIBS@
 LIBZNC   := @LIBZNC@
 LIBZNCDIR:= @LIBZNCDIR@
+PKGCONFIGDIR := $(prefix)/lib/pkgconfig
 
 LIB_SRCS  := ZNCString.cpp Csocket.cpp znc.cpp User.cpp IRCSock.cpp Client.cpp DCCBounce.cpp \
 	DCCSock.cpp Chan.cpp Nick.cpp Server.cpp Modules.cpp MD5.cpp Buffer.cpp Utils.cpp \
@@ -73,10 +74,12 @@ distclean: clean
 install: znc $(LIBZNC)
 	mkdir -p $(DESTDIR)$(bindir)
 	mkdir -p $(DESTDIR)$(includedir)/znc
+	mkdir -p $(DESTDIR)$(PKGCONFIGDIR)
 	install -m 0755 znc $(DESTDIR)$(bindir)
 	install -m 0755 znc-config $(DESTDIR)$(bindir)
 	install -m 0755 znc-buildmod $(DESTDIR)$(bindir)
 	install -m 0644 $(srcdir)/*.h $(DESTDIR)$(includedir)/znc
+	install -m 0644 znc.pc $(DESTDIR)$(PKGCONFIGDIR)
 	@if test -n "$(LIBZNC)"; then \
 		mkdir -p $(DESTDIR)$(LIBZNCDIR) ; \
 		install -m 0755 $(LIBZNC) $(DESTDIR)$(LIBZNCDIR) ; \

configure

@@ -3449,6 +3449,10 @@ ac_config_files="$ac_config_files znc-buildmod"
 
 ac_config_files="$ac_config_files man/Makefile"
 
+ac_config_files="$ac_config_files znc.pc"
+
+ac_config_files="$ac_config_files znc-uninstalled.pc"
+
 if test "$MODULES" = "yes"; then
 	ac_config_files="$ac_config_files modules/Makefile"
 
@@ -4065,6 +4069,8 @@ do
     "znc-config") CONFIG_FILES="$CONFIG_FILES znc-config" ;;
     "znc-buildmod") CONFIG_FILES="$CONFIG_FILES znc-buildmod" ;;
     "man/Makefile") CONFIG_FILES="$CONFIG_FILES man/Makefile" ;;
+    "znc.pc") CONFIG_FILES="$CONFIG_FILES znc.pc" ;;
+    "znc-uninstalled.pc") CONFIG_FILES="$CONFIG_FILES znc-uninstalled.pc" ;;
     "modules/Makefile") CONFIG_FILES="$CONFIG_FILES modules/Makefile" ;;
 
   *) { { $as_echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5

configure.in

@@ -237,6 +237,8 @@ AC_CONFIG_FILES([Makefile])
 AC_CONFIG_FILES([znc-config])
 AC_CONFIG_FILES([znc-buildmod])
 AC_CONFIG_FILES([man/Makefile])
+AC_CONFIG_FILES([znc.pc])
+AC_CONFIG_FILES([znc-uninstalled.pc])
 if test "$MODULES" = "yes"; then
 	AC_CONFIG_FILES([modules/Makefile])
 fi

znc-uninstalled.pc.in

@@ -0,0 +1,25 @@
+# You can access these with e.g. pkg-config --variable=moddir znc
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+datarootdir=@datarootdir@
+bindir=@bindir@
+datadir=@datadir@
+includedir=@includedir@
+
+cxx=@CXX@
+CPPFLAGS=@CPPFLAGS@
+MODFLAGS=@MODFLAGS@
+version=@VERSION@
+moddir=@MODDIR@
+moddatadir=@DATADIR@
+modlink=@MODLINK@
+
+# This and the following two lines should be the only differences to znc.pc.in
+srcdir=@abs_srcdir@
+INC_PATH=-I${srcdir}/
+
+Name: ZNC
+Description: An advanced IRC proxy
+Version: ${version}
+URL: http://znc.in
+Cflags: ${CPPFLAGS} ${MODFLAGS} ${INC_PATH}

znc.pc.in

@@ -0,0 +1,23 @@
+# You can access these with e.g. pkg-config --variable=moddir znc
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+datarootdir=@datarootdir@
+bindir=@bindir@
+datadir=@datadir@
+includedir=@includedir@
+
+cxx=@CXX@
+CPPFLAGS=@CPPFLAGS@
+MODFLAGS=@MODFLAGS@
+version=@VERSION@
+moddir=@MODDIR@
+moddatadir=@DATADIR@
+modlink=@MODLINK@
+
+INC_PATH=-I${includedir}/znc
+
+Name: ZNC
+Description: An advanced IRC proxy
+Version: ${version}
+URL: http://znc.in
+Cflags: ${CPPFLAGS} ${MODFLAGS} ${INC_PATH}