diff options
author | Mike Frysinger <vapier@gentoo.org> | 2016-06-03 20:28:59 -0400 |
---|---|---|
committer | Mike Frysinger <vapier@gentoo.org> | 2016-06-03 20:28:59 -0400 |
commit | 7b195d90c37354874d719f3a488abe16f94512c8 (patch) | |
tree | f93ed8a47790c577b8ea4196d4446d2eca9817b9 /m4 | |
parent | 703f847420d17355789426cdd12cfa18fceae2a8 (diff) | |
download | libgd-7b195d90c37354874d719f3a488abe16f94512c8.tar.gz |
configure: add AX_REQUIRE_DEFINED macro
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..cae1111 --- /dev/null +++ b/m4/ax_require_defined.m4 @@ -0,0 +1,37 @@ +# =========================================================================== +# http://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 1 + +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 |