1 | # =========================================================================== |
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2 | # https://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html |
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3 | # =========================================================================== |
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4 | # |
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5 | # SYNOPSIS |
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6 | # |
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7 | # AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT]) |
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8 | # |
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9 | # DESCRIPTION |
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10 | # |
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11 | # For every FLAG1, FLAG2 it is checked whether the linker works with the |
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12 | # flag. If it does, the flag is added FLAGS-VARIABLE |
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13 | # |
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14 | # If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is |
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15 | # used. During the check the flag is always added to the linker's flags. |
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16 | # |
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17 | # If EXTRA-FLAGS is defined, it is added to the linker's default flags |
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18 | # when the check is done. The check is thus made with the flags: "LDFLAGS |
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19 | # EXTRA-FLAGS FLAG". This can for example be used to force the linker to |
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20 | # issue an error when a bad flag is given. |
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21 | # |
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22 | # INPUT gives an alternative input source to AC_COMPILE_IFELSE. |
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23 | # |
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24 | # NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG. |
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25 | # Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS. |
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26 | # |
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27 | # LICENSE |
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28 | # |
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29 | # Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com> |
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30 | # |
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31 | # Copying and distribution of this file, with or without modification, are |
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32 | # permitted in any medium without royalty provided the copyright notice |
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33 | # and this notice are preserved. This file is offered as-is, without any |
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34 | # warranty. |
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35 | |
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36 | #serial 7 |
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37 | |
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38 | AC_DEFUN([AX_APPEND_LINK_FLAGS], |
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39 | [AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG]) |
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40 | AX_REQUIRE_DEFINED([AX_APPEND_FLAG]) |
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41 | for flag in $1; do |
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42 | AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3], [$4]) |
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43 | done |
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44 | ])dnl AX_APPEND_LINK_FLAGS |
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45 | |
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