X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=SoftHSMv2%2Fm4%2Facx_64bit.m4;fp=SoftHSMv2%2Fm4%2Facx_64bit.m4;h=4620184a0441b6aee46d55b0e9b174b7ae3e6d02;hb=7626b75b3c71173ba62c2f92d22bab8f4291e44a;hp=f610b21556ea89c5eceb8db5dc81938361813c0a;hpb=f2ff7a136a152b36b3aa4d0d574796e6edbef24a;p=aaf%2Fsshsm.git

diff --git a/SoftHSMv2/m4/acx_64bit.m4 b/SoftHSMv2/m4/acx_64bit.m4
index f610b21..4620184 100644
--- a/SoftHSMv2/m4/acx_64bit.m4
+++ b/SoftHSMv2/m4/acx_64bit.m4
@@ -7,23 +7,42 @@ AC_DEFUN([ACX_64BIT],[
 
 	if test "x$enable_64bit" = "xyes"
 	then
-	        AC_MSG_CHECKING(if we can compile in 64-bit mode)
 	        tmp_CFLAGS=$CFLAGS
 	        CFLAGS="-m64"
-	        AC_RUN_IFELSE(
-	                [
+		AC_CACHE_CHECK([if we can compile in 64-bit mode], [acx_cv_prog_cc_64bit],[
+			acx_cv_prog_cc_64bit=no
+		        AC_COMPILE_IFELSE([
 				AC_LANG_PROGRAM([],[return sizeof(void*) == 8 ? 0 : 1;])
 			], [
-	                        AC_MSG_RESULT(yes)
-	                        CXXFLAGS="-m64 $CXXFLAGS"
-	                        LDFLAGS="-m64 $LDFLAGS"
-	                        CFLAGS="-m64 $tmp_CFLAGS"
-	                ],[
-	                        AC_MSG_RESULT(no)
-	                        AC_MSG_ERROR([Don't know how to compile in 64-bit mode.])
-	        		CFLAGS=$tmp_CFLAGS
-	                ]
-	        )
+				acx_cv_prog_cc_64bit=yes
+	                ])
+		])
+
+		if test "x$acx_cv_prog_cc_64bit" = xyes; then
+			AC_MSG_CHECKING([if we can run 64-bit programs])
+			AC_CACHE_VAL([acx_cv_sys_64bit],[
+				acx_cv_sys_64bit=no
+				AC_RUN_IFELSE([
+					AC_LANG_PROGRAM([],[return sizeof(void*) == 8 ? 0 : 1;])
+				], [
+					AC_MSG_RESULT(yes)
+					acx_cv_sys_64bit=yes
+				],[
+					AC_MSG_RESULT(no)
+					AC_MSG_ERROR([Don't know how to compile in 64-bit mode.])
+					CFLAGS=$tmp_CFLAGS
+				],[
+					AC_MSG_WARN([Cannot test, assuming 64-bit])
+					acx_cv_sys_64bit=yes
+				])
+			])
+
+			CXXFLAGS="-m64 $CXXFLAGS"
+			LDFLAGS="-m64 $LDFLAGS"
+			CFLAGS="-m64 $tmp_CFLAGS"
+		else
+			CFLAGS=$tmp_CFLAGS
+		fi
 	fi
 
 ])