autoconf: Fix clang-16 breakage
-Wint-conversion becomes an error by default in clang-16, causing the
program_invocation_short_name test to fail.
Bug: https://bugs.gentoo.org/893910
diff --git a/configure.ac b/configure.ac
index 0a4b79d..bfdcb34 100644
--- a/configure.ac
+++ b/configure.ac
@@ -94,7 +94,7 @@
fi
fi
AC_CACHE_CHECK(for program_invocation_short_name, ac_cv_program_invocation_short_name,[
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([extern char* program_invocation_short_name;],[return program_invocation_short_name;])],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([extern char* program_invocation_short_name;],[return program_invocation_short_name[0];])],
[ac_cv_program_invocation_short_name=yes],
[ac_cv_program_invocation_short_name=no]
)
@@ -102,7 +102,7 @@
if test "x$ac_cv_program_invocation_short_name" = "xyes"; then
AC_DEFINE(HAVE_PROGRAM_INVOCATION_SHORT_NAME, 1, [Define if you have program_invocation_short_name])
AC_CACHE_CHECK(if program_invocation_short_name is declared in errno.h, ac_cv_program_invocation_short_name_errno_h,[
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <errno.h>],[return program_invocation_short_name;])],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <errno.h>],[return program_invocation_short_name[0];])],
[ac_cv_program_invocation_short_name_errno_h=yes],
[ac_cv_program_invocation_short_name_errno_h=no]
)
