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| author | Anthony Green <green@moxielogic.com> | 2018-03-18 15:13:21 -0400 |
|---|---|---|
| committer | Anthony Green <green@moxielogic.com> | 2018-03-18 15:13:21 -0400 |
| commit | f31b915314b12904b858b54cfdf670ceaeda7b2d (patch) | |
| tree | eb99372b09b9ce687126602f56ce72fd03efd5ad /m4 | |
| parent | a2dc5848b53e9e45ff68e5ef70683b5ffb82592e (diff) | |
| download | libffi-f31b915314b12904b858b54cfdf670ceaeda7b2d.tar.gz | |
Add m4/ax_require_defined.m4
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ax_require_defined.m4 | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/m4/ax_require_defined.m4 b/m4/ax_require_defined.m4 new file mode 100644 index 0000000..17c3eab --- /dev/null +++ b/m4/ax_require_defined.m4 @@ -0,0 +1,37 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_require_defined.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_REQUIRE_DEFINED(MACRO) +# +# DESCRIPTION +# +# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have +# been defined and thus are available for use. This avoids random issues +# where a macro isn't expanded. Instead the configure script emits a +# non-fatal: +# +# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found +# +# It's like AC_REQUIRE except it doesn't expand the required macro. +# +# Here's an example: +# +# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) +# +# LICENSE +# +# Copyright (c) 2014 Mike Frysinger <vapier@gentoo.org> +# +# Copying and distribution of this file, with or without modification, are +# permitted in any medium without royalty provided the copyright notice +# and this notice are preserved. This file is offered as-is, without any +# warranty. + +#serial 2 + +AC_DEFUN([AX_REQUIRE_DEFINED], [dnl + m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])]) +])dnl AX_REQUIRE_DEFINED |