Add LIBS variable to .pc files.

src/pkgconfig/cdi.pc.in

@@ -4,7 +4,7 @@ libdir=@libdir@
 includedir=@includedir@
 cflags=-I@includedir@
 fcflags=@FPP_INCOPT@@includedir@ @CDI_F90_INTERFACE_FCFLAGS@
-libs=-L@libdir@ -lcdi @GRIB_API_LIBS@ @JASPER_LIBS@ @NETCDF_LIBS@ @SZLIB_LIBS@ @THREADS_LIBS@
+libs=-L@libdir@ -lcdi @GRIB_API_LIBS@ @JASPER_LIBS@ @NETCDF_LIBS@ @SZLIB_LIBS@ @THREADS_LIBS@ @LIBS@
 threads_libs=@THREADS_LIBS@
 threads_cflags=@THREADS_INCLUDE@
 szlib_cflags=@SZLIB_INCLUDE@
@@ -13,6 +13,7 @@ netcdf_root=@NETCDF_ROOT@
 netcdf_cflags=@NETCDF_INCLUDE@
 netcdf_libs=@NETCDF_LIBS@
 jasper_libs=@JASPER_LIBS@
+aux_libs=@LIBS@
 grib_api_cflags=@GRIB_API_INCLUDE@
 grib_api_libs=@GRIB_API_LIBS@
 cdi_build_cc=@CC@

src/pkgconfig/cdipio.pc.in

@@ -4,7 +4,7 @@ libdir=@libdir@
 includedir=@includedir@
 cflags=-I@includedir@
 fcflags=@FPP_INCOPT@@includedir@ @CDI_F90_INTERFACE_FCFLAGS@
-libs=-L@libdir@ -lcdipio @PPM_CORE_LIBS@ @YAXT_LIBS@ -lcdi @GRIB_API_LIBS@ @JASPER_LIBS@ @NETCDF_LIBS@ @SZLIB_LIBS@ @THREADS_LIBS@
+libs=-L@libdir@ -lcdipio @PPM_CORE_LIBS@ @YAXT_LIBS@ -lcdi @GRIB_API_LIBS@ @JASPER_LIBS@ @NETCDF_LIBS@ @SZLIB_LIBS@ @THREADS_LIBS@ @LIBS@
 threads_libs=@THREADS_LIBS@
 threads_cflags=@THREADS_INCLUDE@
 szlib_cflags=@SZLIB_INCLUDE@
@@ -15,6 +15,7 @@ netcdf_libs=@NETCDF_LIBS@
 jasper_libs=@JASPER_LIBS@
 grib_api_cflags=@GRIB_API_INCLUDE@
 grib_api_libs=@GRIB_API_LIBS@
+aux_libs=@LIBS@
 cdipio_build_cc=@CC@
 cdipio_build_cflags=@CFLAGS@
 cdipio_build_cppflags=@CPPFLAGS@