From 99501ffefd0e8fb16c173b1de97d20936dd44624 Mon Sep 17 00:00:00 2001 From: Daniel Pouzzner Date: Fri, 4 Sep 2020 01:18:44 -0500 Subject: [PATCH] m4/ax_linuxkm.m4: use test "$var" = "" construct, not test -z "$var", for maximal portability. --- m4/ax_linuxkm.m4 | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/m4/ax_linuxkm.m4 b/m4/ax_linuxkm.m4 index 5bfa362ee..60ffbe8d0 100644 --- a/m4/ax_linuxkm.m4 +++ b/m4/ax_linuxkm.m4 @@ -56,24 +56,23 @@ AC_DEFUN([AX_SIMD_CC_COMPILER_FLAGS], [ AC_LANG_PUSH([C]) - if test -z "$CFLAGS_FPU_DISABLE"; then + if test "$CFLAGS_FPU_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-mno-80387],[CFLAGS_FPU_DISABLE]) AX_APPEND_COMPILE_FLAGS([-mno-fp-ret-in-387],[CFLAGS_FPU_DISABLE]) AX_APPEND_COMPILE_FLAGS([-mno-fpu],[CFLAGS_FPU_DISABLE]) fi - if test -z "$CFLAGS_FPU_ENABLE"; then + if test "$CFLAGS_FPU_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-m80387],[CFLAGS_FPU_ENABLE]) AX_APPEND_COMPILE_FLAGS([-mfpu],[CFLAGS_FPU_ENABLE]) fi - if test -z "$CFLAGS_SIMD_DISABLE"; then + if test "$CFLAGS_SIMD_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-mno-sse],[CFLAGS_SIMD_DISABLE]) AX_APPEND_COMPILE_FLAGS([-mgeneral-regs-only],[CFLAGS_SIMD_DISABLE]) - AX_APPEND_COMPILE_FLAGS([-mno-sse],[CFLAGS_SIMD_DISABLE]) fi - if test -z "$CFLAGS_SIMD_ENABLE"; then + if test "$CFLAGS_SIMD_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-msse],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-mmmx],[CFLAGS_SIMD_ENABLE]) AX_APPEND_COMPILE_FLAGS([-msse2],[CFLAGS_SIMD_ENABLE]) @@ -83,14 +82,14 @@ AC_DEFUN([AX_SIMD_CC_COMPILER_FLAGS], [ AX_APPEND_COMPILE_FLAGS([-mno-general-regs-only],[CFLAGS_SIMD_ENABLE]) fi - if test -z "$CFLAGS_AUTO_VECTORIZE_DISABLE"; then + if test "$CFLAGS_AUTO_VECTORIZE_DISABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-fno-builtin],[CFLAGS_AUTO_VECTORIZE_DISABLE]) AX_APPEND_COMPILE_FLAGS([-fno-tree-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE]) AX_APPEND_COMPILE_FLAGS([-fno-tree-loop-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE]) AX_APPEND_COMPILE_FLAGS([-fno-tree-slp-vectorize],[CFLAGS_AUTO_VECTORIZE_DISABLE]) fi - if test -z "$CFLAGS_AUTO_VECTORIZE_ENABLE"; then + if test "$CFLAGS_AUTO_VECTORIZE_ENABLE" = ""; then AX_APPEND_COMPILE_FLAGS([-fbuiltin],[CFLAGS_AUTO_VECTORIZE_ENABLE]) AX_APPEND_COMPILE_FLAGS([-ftree-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE]) AX_APPEND_COMPILE_FLAGS([-ftree-loop-vectorize],[CFLAGS_AUTO_VECTORIZE_ENABLE])