CMake: replace a hard-coded libm reference with '$MATH_LIB'

diff --git a/cmd/tools/CMakeLists.txt b/cmd/tools/CMakeLists.txt
index c864e4cbe63f25ceb5b838904e8e77901e89058f..0e9fd883877e31a25486a840dbcac06ffe286348 100644 (file)
--- a/cmd/tools/CMakeLists.txt
+++ b/cmd/tools/CMakeLists.txt
@@ -256,7 +256,7 @@ target_link_libraries(gvgen cgraph)
 
 # Link to math library
 if(UNIX)
-  target_link_libraries(gvgen m)
+  target_link_libraries(gvgen ${MATH_LIB})
 endif()
 
 tool_defaults(gvgen)