Andrew Waterman
7 years ago
committed by
GitHub
GitHub
6 changed files with 325 additions and 24 deletions
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# =========================================================================== |
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# https://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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# Copying and distribution of this file, with or without modification, are |
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# permitted in any medium without royalty provided the copyright notice |
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# and this notice are preserved. This file is offered as-is, without any |
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# warranty. |
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#serial 8 |
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AC_DEFUN([AX_APPEND_FLAG], |
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[dnl |
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AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF |
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AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])]) |
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AS_VAR_SET_IF(FLAGS,[ |
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AS_CASE([" AS_VAR_GET(FLAGS) "], |
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[*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])], |
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[ |
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AS_VAR_APPEND(FLAGS,[" $1"]) |
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AC_RUN_LOG([: FLAGS="$FLAGS"]) |
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]) |
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], |
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[ |
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AS_VAR_SET(FLAGS,[$1]) |
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AC_RUN_LOG([: FLAGS="$FLAGS"]) |
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]) |
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AS_VAR_POPDEF([FLAGS])dnl |
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])dnl AX_APPEND_FLAG |
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# =========================================================================== |
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# https://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html |
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# =========================================================================== |
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# |
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# SYNOPSIS |
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# |
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# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) |
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# |
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# DESCRIPTION |
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# |
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# For every FLAG1, FLAG2 it is checked whether the linker works with the |
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# flag. If it does, the flag is added FLAGS-VARIABLE |
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# |
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# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is |
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# used. During the check the flag is always added to the linker's flags. |
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# |
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# If EXTRA-FLAGS is defined, it is added to the linker's default flags |
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# when the check is done. The check is thus made with the flags: "LDFLAGS |
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# EXTRA-FLAGS FLAG". This can for example be used to force the linker to |
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# issue an error when a bad flag is given. |
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# |
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# INPUT gives an alternative input source to AC_COMPILE_IFELSE. |
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# |
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# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG. |
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# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS. |
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# |
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# LICENSE |
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# |
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> |
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# |
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# Copying and distribution of this file, with or without modification, are |
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# permitted in any medium without royalty provided the copyright notice |
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# and this notice are preserved. This file is offered as-is, without any |
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# warranty. |
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#serial 7 |
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AC_DEFUN([AX_APPEND_LINK_FLAGS], |
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[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) |
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AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) |
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for flag in $1; do |
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AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3], [$4]) |
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done |
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])dnl AX_APPEND_LINK_FLAGS |
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# =========================================================================== |
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# https://www.gnu.org/software/autoconf-archive/ax_require_defined.html |
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# =========================================================================== |
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# |
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# SYNOPSIS |
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# |
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# AX_REQUIRE_DEFINED(MACRO) |
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# |
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# DESCRIPTION |
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# |
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# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have |
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# been defined and thus are available for use. This avoids random issues |
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# where a macro isn't expanded. Instead the configure script emits a |
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# non-fatal: |
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# |
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# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found |
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# |
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# It's like AC_REQUIRE except it doesn't expand the required macro. |
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# |
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# Here's an example: |
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# |
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# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) |
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# |
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# LICENSE |
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# |
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# Copyright (c) 2014 Mike Frysinger <vapier@gentoo.org> |
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# |
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# Copying and distribution of this file, with or without modification, are |
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# permitted in any medium without royalty provided the copyright notice |
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# and this notice are preserved. This file is offered as-is, without any |
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# warranty. |
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#serial 2 |
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AC_DEFUN([AX_REQUIRE_DEFINED], [dnl |
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m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])]) |
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])dnl AX_REQUIRE_DEFINED |
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