diff --git a/Makefile.all.am b/Makefile.all.am
index 66bd414..1f69802 100644
--- a/Makefile.all.am
+++ b/Makefile.all.am
@@ -176,6 +176,9 @@
 AM_CFLAGS_MIPS32_LINUX     = @FLAG_M32@ $(AM_CFLAGS_BASE) -mips32
 AM_CCASFLAGS_MIPS32_LINUX  = @FLAG_M32@ -mips32 -g
 
+AM_FLAG_M3264_MIPS64_LINUX = @FLAG_M64@
+AM_CFLAGS_MIPS64_LINUX     = @FLAG_M64@ $(AM_CFLAGS_BASE) -mips64
+AM_CCASFLAGS_MIPS64_LINUX  = @FLAG_M64@ -mips64 -g
 
 # Flags for the primary target.  These must be used to build the
 # regtests and performance tests.  In fact, these must be used to
@@ -214,4 +217,5 @@
 PRELOAD_LDFLAGS_AMD64_DARWIN = $(PRELOAD_LDFLAGS_COMMON_DARWIN) -arch x86_64
 PRELOAD_LDFLAGS_S390X_LINUX  = $(PRELOAD_LDFLAGS_COMMON_LINUX) @FLAG_M64@
 PRELOAD_LDFLAGS_MIPS32_LINUX = $(PRELOAD_LDFLAGS_COMMON_LINUX) @FLAG_M32@
+PRELOAD_LDFLAGS_MIPS64_LINUX = $(PRELOAD_LDFLAGS_COMMON_LINUX) @FLAG_M64@