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-rw-r--r--mpi/Makefile.am2
1 files changed, 1 insertions, 1 deletions
diff --git a/mpi/Makefile.am b/mpi/Makefile.am
index 8a302888..6fb7adda 100644
--- a/mpi/Makefile.am
+++ b/mpi/Makefile.am
@@ -1,7 +1,7 @@
## Process this file with automake to produce Makefile.in
INCLUDES = -I$(top_srcdir)/include
-CFLAGS += -O2
+CFLAGS = @CFLAGS@ @MPI_OPT_FLAGS@
SFLAGS = @MPI_SFLAGS@
SUFFIXES = .S .s