| # We need to be careful to avoid having the reference to |
| # program_invocation_name optimized out. We do that by |
| # returning the value. |
| |
| AC_DEFUN([AC_PROGRAM_INVOCATION_NAME], |
| [AC_CACHE_CHECK( |
| for program_invocation_name, |
| ac_cv_have_program_invocation_name, |
| AC_TRY_LINK([extern char* program_invocation_name;], |
| [return *program_invocation_name;], |
| [ac_cv_have_program_invocation_name=yes], |
| [ac_cv_have_program_invocation_name=no]) |
| ) |
| if test "$ac_cv_have_program_invocation_name" = "yes"; then |
| AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME, 1, |
| [define if libc has program_invocation_name]) |
| fi |
| ]) |
| |
