| Austin Schuh | 745610d | 2015-09-06 18:19:50 -0700 | [diff] [blame^] | 1 | # We need to be careful to avoid having the reference to |
| 2 | # program_invocation_name optimized out. We do that by |
| 3 | # returning the value. |
| 4 | |
| 5 | AC_DEFUN([AC_PROGRAM_INVOCATION_NAME], |
| 6 | [AC_CACHE_CHECK( |
| 7 | for program_invocation_name, |
| 8 | ac_cv_have_program_invocation_name, |
| 9 | AC_TRY_LINK([extern char* program_invocation_name;], |
| 10 | [return *program_invocation_name;], |
| 11 | [ac_cv_have_program_invocation_name=yes], |
| 12 | [ac_cv_have_program_invocation_name=no]) |
| 13 | ) |
| 14 | if test "$ac_cv_have_program_invocation_name" = "yes"; then |
| 15 | AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME, 1, |
| 16 | [define if libc has program_invocation_name]) |
| 17 | fi |
| 18 | ]) |
| 19 | |