projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| bf41f30d NC |
1 | dnl |
| 2 | dnl Check if the assembler used supports disabling generation of hardware | |
| 3 | dnl capabilities. This is only supported by Solaris as at the moment. | |
| 4 | dnl | |
| 5 | dnl Defines: | |
| 6 | dnl HWCAP_CFLAGS='-Wa,-nH' if possible. | |
| 7 | dnl | |
| 8 | AC_DEFUN([GCC_CHECK_ASSEMBLER_HWCAP], [ | |
| 9 | test -z "$HWCAP_CFLAGS" && HWCAP_CFLAGS='' | |
| 10 | ||
| 11 | # Restrict the test to Solaris, other assemblers (e.g. AIX as) have -nH | |
| 12 | # with a different meaning. | |
| 13 | case ${target_os} in | |
| 14 | solaris2*) | |
| 15 | ac_save_CFLAGS="$CFLAGS" | |
| 16 | CFLAGS="$CFLAGS -Wa,-nH" | |
| 17 | ||
| 18 | AC_MSG_CHECKING([for as that supports -Wa,-nH]) | |
| 19 | AC_TRY_COMPILE([], [return 0;], [ac_hwcap_flags=yes],[ac_hwcap_flags=no]) | |
| 20 | if test "$ac_hwcap_flags" = "yes"; then | |
| 21 | HWCAP_CFLAGS="-Wa,-nH $HWCAP_CFLAGS" | |
| 22 | fi | |
| 23 | AC_MSG_RESULT($ac_hwcap_flags) | |
| 24 | ||
| 25 | CFLAGS="$ac_save_CFLAGS" | |
| 26 | ;; | |
| 27 | esac | |
| 28 | ||
| 29 | AC_SUBST(HWCAP_CFLAGS) | |
| 30 | ]) | |
| 31 | ||
| 32 | ||
| 33 | dnl | |
| 34 | dnl Check if the linker used supports linker maps to clear hardware | |
| 35 | dnl capabilities. This is only supported on Solaris at the moment. | |
| 36 | dnl | |
| 37 | dnl Defines: | |
| 38 | dnl HWCAP_LDFLAGS=-mclear-hwcap if possible | |
| 39 | dnl LD (as a side effect of testing) | |
| 40 | dnl | |
| 41 | AC_DEFUN([GCC_CHECK_LINKER_HWCAP], [ | |
| 42 | test -z "$HWCAP_LDFLAGS" && HWCAP_LDFLAGS='' | |
| 43 | AC_REQUIRE([AC_PROG_LD]) | |
| 44 | ||
| 45 | ac_save_LDFLAGS="$LDFLAGS" | |
| 46 | LDFLAGS="$LFLAGS -mclear-hwcap" | |
| 47 | ||
| 48 | AC_MSG_CHECKING([for -mclear-hwcap]) | |
| 49 | AC_TRY_LINK([], [return 0;], [ac_hwcap_ldflags=yes],[ac_hwcap_ldflags=no]) | |
| 50 | if test "$ac_hwcap_ldflags" = "yes"; then | |
| 51 | HWCAP_LDFLAGS="-mclear-hwcap $HWCAP_LDFLAGS" | |
| 52 | fi | |
| 53 | AC_MSG_RESULT($ac_hwcap_ldflags) | |
| 54 | ||
| 55 | LDFLAGS="$ac_save_LDFLAGS" | |
| 56 | ||
| 57 | AC_SUBST(HWCAP_LDFLAGS) | |
| 58 | ||
| 59 | AM_CONDITIONAL(HAVE_HWCAP, test $ac_hwcap_ldflags != no) | |
| 60 | ]) |