[gegl] pkg-config: request linking with math library fixing bug #755131

[Øyvind Kolås <ok src gnome org>]

commit d03be6e21a5fe80bfe093ae924d4fd2fe3904364
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Sep 16 23:28:10 2015 +0200

    pkg-config: request linking with math library fixing bug #755131

 gegl-uninstalled.pc.in |    2 +-
 gegl.pc.in             |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gegl-uninstalled.pc.in b/gegl-uninstalled.pc.in
index 557ee60..b8c9539 100644
--- a/gegl-uninstalled.pc.in
+++ b/gegl-uninstalled.pc.in
@@ -2,5 +2,5 @@ Name: Gegl Uninstalled
 Description: Gegl Library, Not Installed
 Version: @VERSION@
 Requires: @GLIB_PACKAGES@
-Libs: ${pc_top_builddir}/${pcfiledir}/gegl/libgegl.la
+Libs: ${pc_top_builddir}/${pcfiledir}/gegl/libgegl.la @MATH_LIB@
 Cflags: -I${pc_top_builddir}/${pcfiledir}/@srcdir@
diff --git a/gegl.pc.in b/gegl.pc.in
index f4b70fc..34b40ea 100644
--- a/gegl.pc.in
+++ b/gegl.pc.in
@@ -8,5 +8,5 @@ Name: GEGL
 Description: Generic Graphics Library 
 Version: @GEGL_REAL_VERSION@
 Requires: @GLIB_PACKAGES@ babl
-Libs: -L${libdir} -l PACKAGE_NAME@- GEGL_API_VERSION@ -l PACKAGE_NAME@-npd- GEGL_API_VERSION@
+Libs: -L${libdir} -l PACKAGE_NAME@- GEGL_API_VERSION@ -l PACKAGE_NAME@-npd- GEGL_API_VERSION@ @MATH_LIB@
 Cflags: -I${includedir}/@PACKAGE_NAME -@GEGL_API_VERSION@