diff -Naur kicad-5.1.5-orig/CMakeLists.txt kicad-5.1.5/CMakeLists.txt
--- kicad-5.1.5-orig/CMakeLists.txt	2019-11-14 09:09:45.000000000 -0800
+++ kicad-5.1.5/CMakeLists.txt	2019-11-19 02:08:32.309282631 -0800
@@ -355,10 +355,10 @@
 
     elseif( NOT APPLE )
         # Thou shalt not link vaporware and tell us it's a valid DSO (apple ld doesn't support it)
-        set( CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined" )
-        set( CMAKE_MODULE_LINKER_FLAGS "-Wl,--no-undefined" )
+        set( CMAKE_SHARED_LINKER_FLAGS "$ENV{LDFLAGS} -Wl,--no-undefined" )
+        set( CMAKE_MODULE_LINKER_FLAGS "$ENV{LDFLAGS} -Wl,--no-undefined" )
 
-        set( CMAKE_EXE_LINKER_FLAGS_RELEASE "-s" )
+        set( CMAKE_EXE_LINKER_FLAGS_RELEASE "$ENV{LDFLAGS} -s" )
 
         # Defeat ELF's ability to use the GOT to replace locally implemented functions
         # with ones from another module.