## io.h conflicts with some a system header on some platforms, so
## use -iquote
-AM_CPPFLAGS = -iquote$(srcdir)/io
+AM_CPPFLAGS = -iquote$(srcdir)/io -I$(srcdir)/$(MULTISRCTOP)../gcc \
+ -I$(srcdir)/$(MULTISRCTOP)../gcc/config \
+ -I$(MULTIBUILDTOP)../../$(host_subdir)/gcc -D_GNU_SOURCE
gfor_io_src= \
io/close.c \
intrinsics/dprod_r8.f90 \
intrinsics/f2c_specifics.F90
+# Turn on vectorization and loop unrolling for matmul.
+$(patsubst %.c,%.lo,$(notdir $(i_matmul_c))): AM_CFLAGS += -ftree-vectorize -funroll-loops
+# Logical matmul doesn't vectorize.
+$(patsubst %.c,%.lo,$(notdir $(i_matmull_c))): AM_CFLAGS += -funroll-loops
+
BUILT_SOURCES=$(gfor_built_src) $(gfor_built_specific_src) \
$(gfor_built_specific2_src)
libgfortran_la_SOURCES = $(gfor_src) $(gfor_built_src) $(gfor_io_src) \