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Diffstat (limited to 'gcc/aclocal.m4')
| -rw-r--r-- | gcc/aclocal.m4 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/aclocal.m4 b/gcc/aclocal.m4 index 007fb5eb5f6..7149a2ab98a 100644 --- a/gcc/aclocal.m4 +++ b/gcc/aclocal.m4 @@ -143,6 +143,16 @@ fi AC_SUBST(LN)dnl ]) +dnl See whether the stage1 host compiler accepts the volatile keyword. +AC_DEFUN(GCC_C_VOLATILE, +[AC_CACHE_CHECK([for volatile], gcc_cv_c_volatile, +[AC_TRY_COMPILE(, [volatile int foo;], + gcc_cv_c_volatile=yes, gcc_cv_c_volatile=no)]) +if test $gcc_cv_c_volatile = yes ; then + AC_DEFINE(HAVE_VOLATILE) +fi +]) + AC_DEFUN(EGCS_PROG_INSTALL, [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl # Find a good install program. We prefer a C program (faster), |