mirror of
https://github.com/Hamlib/Hamlib.git
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55d034c834
Cleaned up M4sh syntax for variable quoting, replaced shell 'if' conditionals with M4sh AS_IF macro and shell 'case' with AS_CASE macro. Properly quoted macro variables. Added comments to configure.ac describing actions, commented out obsolete macros, commented obsolecent macros, and added comments for major sections. Corrected a Mingw linker error on the .EXE files adding '--enable-auto-import' to their LD flags. Testing this commit on win32 shows that rigctld is now working properly. Will need to port this to the Stable branch and test. Replaced older local macros with newer replacements from GNU Autoconf archive.
70 lines
2.7 KiB
Plaintext
70 lines
2.7 KiB
Plaintext
# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_append_flag.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE])
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#
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# DESCRIPTION
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#
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# FLAG is appended to the FLAGS-VARIABLE shell variable, with a space
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# added in between.
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#
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# If FLAGS-VARIABLE is not specified, the current language's flags (e.g.
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# CFLAGS) is used. FLAGS-VARIABLE is not changed if it already contains
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# FLAG. If FLAGS-VARIABLE is unset in the shell, it is set to exactly
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# FLAG.
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#
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# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Archive. When you make and distribute a
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 2
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AC_DEFUN([AX_APPEND_FLAG],
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[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
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AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])])dnl
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AS_VAR_SET_IF(FLAGS,
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[case " AS_VAR_GET(FLAGS) " in
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*" $1 "*)
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AC_RUN_LOG([: FLAGS already contains $1])
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;;
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*)
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AC_RUN_LOG([: FLAGS="$FLAGS $1"])
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AS_VAR_SET(FLAGS, ["AS_VAR_GET(FLAGS) $1"])
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;;
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esac],
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[AS_VAR_SET(FLAGS,["$1"])])
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AS_VAR_POPDEF([FLAGS])dnl
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])dnl AX_APPEND_FLAG
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