diff --git a/Makefile.am b/Makefile.am
index 87c2fb8..3052713 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,7 +4,7 @@
 libfan_la_LDFLAGS = -static
 libfan_la_LIBADD = \
 	$(SDBUSPLUS_LIBS)
-libfan_la_CXXFLAGS =
+libfan_la_CXXFLAGS = \
 	$(SDBUSPLUS_CFLAGS) -flto
 libfan_la_SOURCES = \
 	utility.cpp \
diff --git a/configure.ac b/configure.ac
index 94de978..0cb53a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,6 +7,10 @@
 AM_INIT_AUTOMAKE([subdir-objects -Wall -Werror foreign dist-xz])
 AM_SILENT_RULES([yes])
 
+# Use gcc-ar and gcc-ranlib for static libraries built with -flto
+AC_SUBST([AR], [${ac_tool_prefix}gcc-ar])
+AC_SUBST([RANLIB], [${ac_tool_prefix}gcc-ranlib])
+
 # Checks for programs.
 AC_PROG_CXX
 AM_PROG_AR