https://src.fedoraproject.org/rpms/cdparanoia/blob/rawhide/f/cdparanoia-10.2-add-pkgconfig.patch

From 5beb3983942ce92ea18a2a0f2e15f84fb25c27d8 Mon Sep 17 00:00:00 2001
From: xiphmont <xiphmont@0101bb08-14d6-0310-b084-bc0e0c8e3800>
Date: Fri, 11 Jun 2010 15:42:00 +0000
Subject: [PATCH] Add pkgconfig file to cdparanoia; closes Trac #1706

git-svn-id: https://svn.xiph.org/trunk/cdparanoia@17289 0101bb08-14d6-0310-b084-bc0e0c8e3800
diff --git a/Makefile.in b/Makefile.in
index d03ef85..f8bb5f8 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -3,7 +3,7 @@
 # DO NOT EDIT BELOW! ##########################################################
 # (unless, of course, you know what you are doing :) ##########################
 
-VERSION=10.2
+VERSION=@VERSION@
 VPATH=@srcdir@
 srcdir=@srcdir@
 
@@ -23,6 +23,7 @@ BINDIR=@bindir@
 MANDIR=@mandir@
 INCLUDEDIR=@includedir@
 LIBDIR=@libdir@
+PKGCONFIGDIR=@libdir@/pkgconfig
 PWD = $(shell pwd)
 
 OFILES = main.o report.o header.o buffering_write.o cachetest.o
@@ -85,6 +86,8 @@ install:
 		$(DESTDIR)$(LIBDIR)/libcdda_paranoia.so.0
 	ln -fs libcdda_paranoia.so.0.$(VERSION) \
 		$(DESTDIR)$(LIBDIR)/libcdda_paranoia.so
+	$(INSTALL) -d -m 0755 $(DESTDIR)$(PKGCONFIGDIR)
+	$(INSTALL) -m 0644 $(srcdir)/cdparanoia-3.pc $(DESTDIR)$(PKGCONFIGDIR)
 
 cdparanoia:	$(OFILES) $(LIBDEP)
 		$(LD) $(CFLAGS) $(LDFLAGS) $(OFILES) \
@@ -104,6 +107,6 @@ distclean:
 	cd interface && $(MAKE) distclean
 	cd paranoia && $(MAKE) distclean
 	-rm -f cdparanoia *~ config.* *.o *.wav *.aifc *.raw test.file \
-		Makefile verify_test core gmon.out
+		Makefile verify_test core gmon.out cdparanoia-3.pc
 
 .PHONY: all debug test lib slib install clean distclean
diff --git a/configure.in b/configure.in
index 3ad98ca..37d7576 100644
--- a/configure.in
+++ b/configure.in
@@ -3,6 +3,9 @@ AC_INIT(interface/interface.c)
 cp $srcdir/configure.guess $srcdir/config.guess
 cp $srcdir/configure.sub $srcdir/config.sub
 
+VERSION="10.2"
+AC_SUBST(VERSION)
+
 AC_CANONICAL_HOST
 
 if test -z "$CC"; then
@@ -67,4 +70,4 @@ AC_SUBST(OPT)
 AC_SUBST(DEBUG)
 AC_SUBST(CC)
 
-AC_OUTPUT(Makefile interface/Makefile paranoia/Makefile)
+AC_OUTPUT(Makefile interface/Makefile paranoia/Makefile cdparanoia-3.pc)
diff --git a/cdparanoia-3.pc.in b/cdparanoia-3.pc.in
new file mode 100644
index 0000000..3a15099
--- /dev/null
+++ b/cdparanoia-3.pc.in
@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: Cdparanoia III
+Description: Compact Disc Digital Audio (CDDA) Digital Audio Extraction (DAE) library
+Requires:
+Version: @VERSION@
+Libs: -L${libdir} -lcdda_interface -lcdda_paranoia
+Cflags: -I${includedir}
+