diff options
| -rw-r--r-- | configure.ac | 35 |
1 files changed, 23 insertions, 12 deletions
diff --git a/configure.ac b/configure.ac index c591a041..5eb55eb0 100644 --- a/configure.ac +++ b/configure.ac @@ -172,6 +172,22 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])], CFLAGS="$saved_CFLAGS" if test "$GCC" = "yes" || test "$GCC" = "egcs"; then + AC_MSG_CHECKING([gcc version]) + GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'` + case "$GCC_VER" in + 1.*) no_attrib_nonnull=1 ;; + 2.8* | 2.9*) + no_attrib_nonnull=1 + ;; + 2.*) no_attrib_nonnull=1 ;; + *) ;; + esac + AC_MSG_RESULT([$GCC_VER]) + + AC_MSG_CHECKING([clang version]) + CLANG_VER=`$CC -v 2>&1 | $AWK '/clang version /{print $3}'` + AC_MSG_RESULT([$CLANG_VER]) + OSSH_CHECK_CFLAG_COMPILE([-pipe]) OSSH_CHECK_CFLAG_COMPILE([-Wunknown-warning-option]) OSSH_CHECK_CFLAG_COMPILE([-Wno-error=format-truncation]) @@ -203,20 +219,15 @@ if test "$GCC" = "yes" || test "$GCC" = "egcs"; then # actually links. The test program compiled/linked includes a number # of integer operations that should exercise this. OSSH_CHECK_CFLAG_LINK([-ftrapv]) - OSSH_CHECK_CFLAG_COMPILE([-fzero-call-used-regs=all]) + # clang 15 seems to have a big in -fzero-call-used-regs=all. See + # https://bugzilla.mindrot.org/show_bug.cgi?id=3475 and + # https://github.com/llvm/llvm-project/issues/59242 + case "$CLANG_VER" in + 15.*) OSSH_CHECK_CFLAG_COMPILE([-fzero-call-used-regs=used]) ;; + *) OSSH_CHECK_CFLAG_COMPILE([-fzero-call-used-regs=all]) ;; + esac OSSH_CHECK_CFLAG_COMPILE([-ftrivial-auto-var-init=zero]) fi - AC_MSG_CHECKING([gcc version]) - GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'` - case $GCC_VER in - 1.*) no_attrib_nonnull=1 ;; - 2.8* | 2.9*) - no_attrib_nonnull=1 - ;; - 2.*) no_attrib_nonnull=1 ;; - *) ;; - esac - AC_MSG_RESULT([$GCC_VER]) AC_MSG_CHECKING([if $CC accepts -fno-builtin-memset]) saved_CFLAGS="$CFLAGS" |