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73 lines
2.3 KiB
Plaintext
73 lines
2.3 KiB
Plaintext
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_ext_have_lib.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_EXT_HAVE_LIB(<directories>, <library>, <function>, <extra libraries>)
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#
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# DESCRIPTION
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#
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# AX_EXT_HAVE_LIB is identical to AC_SEARCH_LIBS with the exception that
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# will add -L<directory> when looking, and use a different variable for
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# each directory.
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#
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# Any required -L<directory> flags are added to LDFLAGS and located
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# libraies are added to LIBS
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#
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# Some libraries are unlinkable without other extra libraries, which can
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# be specified in the 4th argument. The mysql client library needs -lz,
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# for example.
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#
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# Example:
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#
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# AX_EXT_HAVE_LIB(/lib /usr/lib /usr/local/lib /usr/lib/mysql /usr/local/mysql/lib, mysqlclient, mysql_init, [-lz])
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#
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# which finds the mysql client library if succeds system when it tries
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# with -L/usr/lib/mysql then it adds -lmysqlclient to LIBS and
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# -L/usr/lib/mysql to LDFLAGS.
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#
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# The test itself is based on the autoconf 2.53 version of AC_SEARCH_LIBS.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Duncan Simpson <dps@simpson.demon.co.uk>
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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 9
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AC_DEFUN([AX_EXT_HAVE_LIB],
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[
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new_ldflags=${LDFLAGS}
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new_libs=$LIBS
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AC_CHECK_LIB([$2], $3, new_libs="-l$2"; ext_lib_found="yes", ext_lib_found="no")
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for dir in $1
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do
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if test $ext_lib_found = no
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then
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ext_haslib_cvdir=`echo $dir | $as_tr_sh`
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AC_CACHE_CHECK([for $2 library with -L$dir], [ext_cv${ext_haslib_cvdir}_haslib_$2],
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[ext_func_search_save_LIBS=$LIBS
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ext_func_save_ldflags=${LDFLAGS}
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LIBS="-l$2 $4 ${ext_func_search_save_LIBS}"
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LDFLAGS="-L$dir ${ext_func_save_ldflags}"
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AC_TRY_LINK_FUNC([$3], [eval "ext_cv${ext_haslib_cvdir}_haslib_$2"="yes"],
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[eval "ext_cv${ext_haslib_cvdir}_haslib_$2"="no"])
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LIBS=$ext_func_search_save_LIBS
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LDFLAGS=$ext_func_save_ldflags
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])
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if eval `echo 'test x${'ext_cv${ext_haslib_cvdir}_haslib_$2'}' = "xyes"`; then
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new_libs="-l$2"
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new_ldflags="-L${dir} ${new_ldflags}"
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ext_lib_found="yes"
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fi
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fi
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done
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LIBS="$new_libs ${LIBS}"
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LDFLAGS=$new_ldflags
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])
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