openat: provide more convenience names

[pspp] / modules / progname

diff --git a/modules/progname b/modules/progname
index eacc4529cac280aba516884a56cc1012e3910f0f..0877801525054653064d5f90bef768ddd2f7c01a 100644 (file)
--- a/modules/progname
+++ b/modules/progname
@@ -8,6 +8,7 @@ lib/progname.c
 Depends-on:
 
 configure.ac:
+AC_CHECK_DECLS([program_invocation_name], [], [], [#include <errno.h>])
 
 Makefile.am:
 lib_SOURCES += progname.h progname.c