--- old/make/autoconf/spec.gmk.in	2018-09-11 13:52:32.394624870 +0200
+++ new/make/autoconf/spec.gmk.in	2018-09-11 13:52:32.073625502 +0200
@@ -450,6 +450,7 @@
 LIBJSIG_HASHSTYLE_LDFLAGS := @LIBJSIG_HASHSTYLE_LDFLAGS@
 LIBJSIG_NOEXECSTACK_LDFLAGS := @LIBJSIG_NOEXECSTACK_LDFLAGS@
 
+FDLIBM_CFLAGS := @FDLIBM_CFLAGS@
 JVM_CFLAGS := @JVM_CFLAGS@
 JVM_LDFLAGS := @JVM_LDFLAGS@
 JVM_ASFLAGS := @JVM_ASFLAGS@