diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/configure b/configure index 7847773884..c223cad63f 100755 --- a/configure +++ b/configure @@ -5534,7 +5534,7 @@ if test "${libc_cv_asm_underscores+set}" = set; then echo $ECHO_N "(cached) $ECHO_C" >&6 else cat > conftest.$ac_ext <<EOF -#line 5537 "configure" +#line $LINENO "configure" #include "confdefs.h" void underscore_test(void) { return; } @@ -5860,7 +5860,7 @@ if test "${libc_cv_gcc_dwarf2_unwind_info+set}" = set; then echo $ECHO_N "(cached) $ECHO_C" >&6 else cat > conftest.c <<EOF -#line 5863 "configure" +#line $LINENO "configure" static char *__EH_FRAME_BEGIN__; _start () { @@ -5956,7 +5956,7 @@ if test "${libc_cv_gcc_builtin_expect+set}" = set; then echo $ECHO_N "(cached) $ECHO_C" >&6 else cat > conftest.c <<EOF -#line 5959 "configure" +#line $LINENO "configure" int foo (int a) { a = __builtin_expect (a, 10); @@ -6018,13 +6018,47 @@ _ACEOF fi +echo "$as_me:$LINENO: checking for redirection of built-in functions" >&5 +echo $ECHO_N "checking for redirection of built-in functions... $ECHO_C" >&6 +if test "${libc_cv_gcc_builtin_redirection+set}" = set; then + echo $ECHO_N "(cached) $ECHO_C" >&6 +else + cat > conftest.c <<\EOF +extern char *strstr (const char *, const char *) __asm ("my_strstr"); +char *foo (const char *a, const char *b) +{ + return __builtin_strstr (a, b); +} +EOF +if { ac_try='${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null' + { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 + (eval $ac_try) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; }; +then + libc_cv_gcc_builtin_redirection=yes +else + libc_cv_gcc_builtin_redirection=no +fi +rm -f conftest* +fi +echo "$as_me:$LINENO: result: $libc_cv_gcc_builtin_redirection" >&5 +echo "${ECHO_T}$libc_cv_gcc_builtin_redirection" >&6 +if test "$libc_cv_gcc_builtin_redirection" = yes ; then + cat >>confdefs.h <<\_ACEOF +#define HAVE_BUILTIN_REDIRECTION 1 +_ACEOF + +fi + echo "$as_me:$LINENO: checking for local label subtraction" >&5 echo $ECHO_N "checking for local label subtraction... $ECHO_C" >&6 if test "${libc_cv_gcc_subtract_local_labels+set}" = set; then echo $ECHO_N "(cached) $ECHO_C" >&6 else cat > conftest.c <<EOF -#line 6027 "configure" +#line $LINENO "configure" int foo (int a) { static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 }; |