1 files changed, 3 insertions, 0 deletions

diff --git a/m4/mpc.m4 b/m4/mpc.m4
index f537299..03d08fa 100644
--- a/m4/mpc.m4
+++ b/m4/mpc.m4
@@ -140,6 +140,9 @@ MPC_GMP_CC_CFLAGS
 #
 AC_DEFUN([MPC_GMP_CC_CFLAGS], [
    AC_MSG_CHECKING(for CC and CFLAGS in gmp.h)
+   AC_PROG_CPP
+   AC_PROG_EGREP
+   AC_PROG_SED
    # Get CC
    echo "#include \"gmp.h\"" >  conftest.c
    echo "MPC_OPTION __GMP_CC"           >> conftest.c