diff --git a/glafp-utils/mkdependC/mkdependC.prl b/glafp-utils/mkdependC/mkdependC.prl
index ff0c0da2f8606fcb0e902e34744c15d872e9248c..be3d42fb16ced0560884d83d33f3663cea642a5e 100644
--- a/glafp-utils/mkdependC/mkdependC.prl
+++ b/glafp-utils/mkdependC/mkdependC.prl
@@ -32,6 +32,9 @@ $HostPlatform = ${HOSTPLATFORM};
 if ( $HostPlatform =~ /^i386-/ ) {
     push(@Defines, '-D__i386__');
 }
+if ( $HostPlatform =~ /linux/ ) {
+    push(@Defines, '-D__linux__');
+}
 if ( $HostPlatform =~ /^sparc-/ ) {
     push(@Defines, '-D__sparc__');
 }