1 # option, cache_name, variable,
2 # code to execute if yes, code to exectute if fail
3 AC_DEFUN([AC_SYS_COMPILER_FLAG],
7 AC_CACHE_VAL(mysql_cv_option_$2,
9 CFLAGS="[$]OLD_CFLAGS $1"
10 AC_TRY_LINK([int main(){exit(0);}],mysql_cv_option_$2=yes,mysql_cv_option_$2=no,mysql_cv_option_$2=no)
13 CFLAGS="[$]OLD_CFLAGS"
15 if test x"[$]mysql_cv_option_$2" = "xyes" ; then
25 # arch, option, cache_name, variable
26 AC_DEFUN([AC_SYS_CPU_COMPILER_FLAG],
28 if test "`uname -m 2>/dev/null`" = "$1" ; then
29 AC_SYS_COMPILER_FLAG($2,$3,$4)
33 # os, option, cache_name, variable
34 AC_DEFUN([AC_SYS_OS_COMPILER_FLAG],
36 if test "x$mysql_cv_sys_os" = "x$1" ; then
37 AC_SYS_COMPILER_FLAG($2,$3,$4)
41 AC_DEFUN([AC_CHECK_NOEXECSTACK],
43 AC_CACHE_CHECK(whether --noexecstack is desirable for .S files,
44 mysql_cv_as_noexecstack, [dnl
45 cat > conftest.c <<EOF
48 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS
49 -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD]) \
50 && grep .note.GNU-stack conftest.s >/dev/null \
51 && AC_TRY_COMMAND([${CC-cc} $CCASFLAGS $CPPFLAGS -Wa,--noexecstack
52 -c -o conftest.o conftest.s 1>&AS_MESSAGE_LOG_FD])
54 mysql_cv_as_noexecstack=yes
56 mysql_cv_as_noexecstack=no
59 if test $mysql_cv_as_noexecstack = yes; then
60 CCASFLAGS="$CCASFLAGS -Wa,--noexecstack"