From c3f8dc2a48e0c310abb7b58019fbcf944fa2697c Mon Sep 17 00:00:00 2001
From: Turbo Fredriksson <turbo@bayour.com>
Date: Sat, 7 Jun 2014 01:23:22 +0200
Subject: [PATCH] Add a pkgconfig file

Providing a pkg-config file makes is easy for 3rd party applications
to link against the libzfs libraries.  It also allows the libzfs
developers to modify the list of required libraries and cflags
without breaking existing applications.

The following example illustrates how pkg-config can be used:

cc `pkg-config --cflags --libs libzfs` -o myapp myapp.c

/*
 * myapp.c
 */
void main()
{
	libzfs_handle_t *hdl;

	hdl = libzfs_init();
	if (hdl)
		libzfs_fini(hdl);
}

Signed-off-by: Turbo Fredriksson <turbo@bayour.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes: #585
---
 configure.ac                 |  2 ++
 lib/libzfs/.gitignore        |  2 ++
 lib/libzfs/Makefile.am       |  4 ++++
 lib/libzfs/libzfs.pc.in      | 12 ++++++++++++
 lib/libzfs/libzfs_core.pc.in | 11 +++++++++++
 rpm/generic/zfs.spec.in      |  2 ++
 6 files changed, 33 insertions(+)
 create mode 100644 lib/libzfs/.gitignore
 create mode 100644 lib/libzfs/libzfs.pc.in
 create mode 100644 lib/libzfs/libzfs_core.pc.in

diff --git a/configure.ac b/configure.ac
index ffa01194a..bad15bd16 100644
--- a/configure.ac
+++ b/configure.ac
@@ -90,6 +90,8 @@ AC_CONFIG_FILES([
 	lib/libunicode/Makefile
 	lib/libuutil/Makefile
 	lib/libzpool/Makefile
+	lib/libzfs/libzfs.pc
+	lib/libzfs/libzfs_core.pc
 	lib/libzfs/Makefile
 	lib/libzfs_core/Makefile
 	lib/libshare/Makefile
diff --git a/lib/libzfs/.gitignore b/lib/libzfs/.gitignore
new file mode 100644
index 000000000..d719bc1ad
--- /dev/null
+++ b/lib/libzfs/.gitignore
@@ -0,0 +1,2 @@
+/libzfs.pc
+/libzfs_core.pc
diff --git a/lib/libzfs/Makefile.am b/lib/libzfs/Makefile.am
index 8b1f51782..c66285e24 100644
--- a/lib/libzfs/Makefile.am
+++ b/lib/libzfs/Makefile.am
@@ -1,5 +1,9 @@
 include $(top_srcdir)/config/Rules.am
 
+libzfs_pcdir = $(datarootdir)/pkgconfig
+libzfs_pc_DATA = $(top_srcdir)/lib/libzfs/libzfs.pc $(top_srcdir)/lib/libzfs/libzfs_core.pc
+EXTRA_DIST = $(top_srcdir)/lib/libzfs/libzfs.pc $(top_srcdir)/lib/libzfs/libzfs_core.pc
+
 DEFAULT_INCLUDES += \
 	-I$(top_srcdir)/include \
 	-I$(top_srcdir)/lib/libspl/include
diff --git a/lib/libzfs/libzfs.pc.in b/lib/libzfs/libzfs.pc.in
new file mode 100644
index 000000000..0e83f7a64
--- /dev/null
+++ b/lib/libzfs/libzfs.pc.in
@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libzfs
+Description: LibZFS library
+Version: @VERSION@
+URL: http://zfsonlinux.org
+Requires: libzfs_core
+Cflags: -I${includedir}/libzfs -I${includedir}/libspl
+Libs: -L${libdir} -lzfs
diff --git a/lib/libzfs/libzfs_core.pc.in b/lib/libzfs/libzfs_core.pc.in
new file mode 100644
index 000000000..2b6a86bfa
--- /dev/null
+++ b/lib/libzfs/libzfs_core.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: libzfs_core
+Description: LibZFS core library
+Version: @VERSION@
+URL: http://zfsonlinux.org
+Cflags: -I${includedir}/libzfs -I${includedir}/libspl
+Libs: -L${libdir} -lzfs_core
diff --git a/rpm/generic/zfs.spec.in b/rpm/generic/zfs.spec.in
index b0917176d..c173b2c6e 100644
--- a/rpm/generic/zfs.spec.in
+++ b/rpm/generic/zfs.spec.in
@@ -280,6 +280,8 @@ exit 0
 %{_libdir}/libzfs*.so.*
 
 %files -n libzfs2-devel
+%{_datadir}/pkgconfig/libzfs.pc
+%{_datadir}/pkgconfig/libzfs_core.pc
 %{_libdir}/*.so
 %{_includedir}/*
 %doc AUTHORS COPYRIGHT DISCLAIMER