diff options
Diffstat (limited to 'm4/ax_cc_maxopt.m4')
| -rw-r--r-- | m4/ax_cc_maxopt.m4 | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/m4/ax_cc_maxopt.m4 b/m4/ax_cc_maxopt.m4 index 027b6d8..58e267b 100644 --- a/m4/ax_cc_maxopt.m4 +++ b/m4/ax_cc_maxopt.m4 @@ -55,7 +55,7 @@ # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. -#serial 18 +#serial 22 AC_DEFUN([AX_CC_MAXOPT], [ @@ -67,7 +67,7 @@ AC_ARG_ENABLE(portable-binary, [AS_HELP_STRING([--enable-portable-binary], [disa acx_maxopt_portable=$enableval, acx_maxopt_portable=no) # Try to determine "good" native compiler flags if none specified via CFLAGS -if test "$ac_test_CFLAGS" != "set"; then +if test "x$ac_test_CFLAGS" = "x"; then case $ax_cv_c_compiler_vendor in dec) CFLAGS="$CFLAGS -newc -w0 -O5 -ansi_alias -ansi_args -fp_reorder -tune host" if test "x$acx_maxopt_portable" = xno; then @@ -143,13 +143,17 @@ if test "$ac_test_CFLAGS" != "set"; then fi ;; + nvhpc) + # default optimization flags for nvhpc + CFLAGS="$CFLAGS -O3" + ;; + gnu) # default optimization flags for gcc on all systems CFLAGS="$CFLAGS -O3 -fomit-frame-pointer" # -malign-double for x86 systems - # libffi local change -- don't align double, as it changes the ABI - # AX_CHECK_COMPILE_FLAG(-malign-double, CFLAGS="$CFLAGS -malign-double") + AX_CHECK_COMPILE_FLAG(-malign-double, CFLAGS="$CFLAGS -malign-double") # -fstrict-aliasing for gcc-2.95+ AX_CHECK_COMPILE_FLAG(-fstrict-aliasing, |