Add pkg-config support

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

.gitignore

@@ -4,6 +4,8 @@
 *.so
 *.so.*
 *.a
+*.la
+*.lo
 .deps
 .libs
 compile
@@ -22,4 +24,6 @@ ar-lib
 autom4te.cache
 bench
 test
-libuev*
+libuev*.tar.*
+libuev.pc
+!libuev.pc.in

Makefile.am

@@ -12,6 +12,8 @@ libuev_la_CPPFLAGS  = -D_GNU_SOURCE
 libuev_la_CFLAGS    = -W -Wall -Wextra
 libuev_la_LDFLAGS   = $(AM_LDFLAGS) -version-info 1:0:0
 
+pkgconfigdir        = $(libdir)/pkgconfig
+pkgconfig_DATA      = libuev.pc
 doc_DATA            = README.md LICENSE
 EXTRA_DIST          = README.md LICENSE AUTHORS ChangeLog.md
 

README.md

@@ -270,6 +270,22 @@ library) for [reference benchmarks][7] against [libevent][1] and
 [libev][2].
 
 
+Using -luev
+-----------
+
+LibuEv is by default installed as a library with a single include file.
+
+    #include <libuev/uev.h>
+
+The output from the `pkg-config` tool holds no surprises:
+
+    $ pkg-config --libs --static --cflags libuev
+    -I/usr/local/include -L/usr/local/lib -luev
+
+The prefix path `/usr/local/` used here is only the default.  Use the
+`configure` script to select a different path when installing libuEv.
+
+
 Build & Install
 ---------------
 

configure.ac

@@ -6,7 +6,7 @@ AM_SILENT_RULES([yes])
 
 AC_CONFIG_SRCDIR(uev.c)
 AM_CONFIG_HEADER(config.h)
-AC_CONFIG_FILES([Makefile examples/Makefile])
+AC_CONFIG_FILES([Makefile libuev.pc examples/Makefile])
 AC_CONFIG_MACRO_DIR([m4])
 
 AC_PROG_CC

libuev.pc.in

@@ -0,0 +1,12 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: @PACKAGE@
+Description: Simple event loop for Linux
+Version: @VERSION@
+Requires:
+Libs: -L${libdir} -luev
+Cflags: -I${includedir}
+