diff --git a/lemon/lemon.pc.in b/lemon/lemon.pc.in
--- a/lemon/lemon.pc.in
+++ b/lemon/lemon.pc.in
@@ -6,5 +6,5 @@
 Name: @PACKAGE_NAME@
 Description: Library of Efficient Models and Optimization in Networks
 Version: @PACKAGE_VERSION@
-Libs: -L${libdir} -lemon @GLPK_LIBS@ @CPLEX_LIBS@
-Cflags: -I${includedir} @GLPK_CFLAGS@ @CPLEX_CFLAGS@
+Libs: -L${libdir} -lemon
+Cflags: -I${includedir}