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author | P. J. McDermott <pj@pehjota.net> | 2023-10-05 10:30:16 (EDT) |
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committer | P. J. McDermott <pj@pehjota.net> | 2023-10-05 11:08:15 (EDT) |
commit | 86a7f466b1545ee0d6f634414bc7b18dbdb1d36f (patch) | |
tree | 69692b7d0413dfa412e037cc2d4181421d5ac5cb /m4/ax_prepend_flag.m4 | |
parent | 92a875fc62f85fe8c8252b48b9c9d248715ddcc3 (diff) | |
download | atsign-86a7f466b1545ee0d6f634414bc7b18dbdb1d36f.zip atsign-86a7f466b1545ee0d6f634414bc7b18dbdb1d36f.tar.gz atsign-86a7f466b1545ee0d6f634414bc7b18dbdb1d36f.tar.bz2 |
m4: Update
- m4/ax_cflags_warn_all.m4 now requires m4/ax_compiler_vendor.m4
- m4/ax_cflags_warn_all.m4 now requires m4/ax_prepend_flag.m4
Diffstat (limited to 'm4/ax_prepend_flag.m4')
-rw-r--r-- | m4/ax_prepend_flag.m4 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/m4/ax_prepend_flag.m4 b/m4/ax_prepend_flag.m4 new file mode 100644 index 0000000..adac8c5 --- /dev/null +++ b/m4/ax_prepend_flag.m4 @@ -0,0 +1,51 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_prepend_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_PREPEND_FLAG(FLAG, [FLAGS-VARIABLE]) +# +# DESCRIPTION +# +# FLAG is added to the front of the FLAGS-VARIABLE shell variable, with a +# space added in between. +# +# If FLAGS-VARIABLE is not specified, the current language's flags (e.g. +# CFLAGS) is used. FLAGS-VARIABLE is not changed if it already contains +# FLAG. If FLAGS-VARIABLE is unset in the shell, it is set to exactly +# FLAG. +# +# NOTE: Implementation based on AX_APPEND_FLAG. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> +# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> +# Copyright (c) 2018 John Zaitseff <J.Zaitseff@zap.org.au> +# +# 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_PREPEND_FLAG], +[dnl +AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF +AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])]) +AS_VAR_SET_IF(FLAGS,[ + AS_CASE([" AS_VAR_GET(FLAGS) "], + [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])], + [ + FLAGS="$1 $FLAGS" + AC_RUN_LOG([: FLAGS="$FLAGS"]) + ]) + ], + [ + AS_VAR_SET(FLAGS,[$1]) + AC_RUN_LOG([: FLAGS="$FLAGS"]) + ]) +AS_VAR_POPDEF([FLAGS])dnl +])dnl AX_PREPEND_FLAG |