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42 lines
1.7 KiB
Plaintext
42 lines
1.7 KiB
Plaintext
# libunistring.m4 serial 4
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dnl Copyright (C) 2009-2010 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl gl_LIBUNISTRING
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dnl Searches for an installed libunistring.
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dnl If found, it sets and AC_SUBSTs HAVE_LIBUNISTRING=yes and the LIBUNISTRING
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dnl and LTLIBUNISTRING variables and augments the CPPFLAGS variable, and
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dnl #defines HAVE_LIBUNISTRING to 1. Otherwise, it sets and AC_SUBSTs
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dnl HAVE_LIBUNISTRING=no and LIBUNISTRING and LTLIBUNISTRING to empty.
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AC_DEFUN([gl_LIBUNISTRING],
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[
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dnl First, try to link without -liconv. libunistring often depends on
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dnl libiconv, but we don't know (and often don't need to know) where
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dnl libiconv is installed.
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AC_LIB_HAVE_LINKFLAGS([unistring], [],
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[#include <uniconv.h>], [u8_strconv_from_locale((char*)0);],
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[no, consider installing GNU libunistring])
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if test "$ac_cv_libunistring" != yes; then
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dnl Second try, with -liconv.
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AC_REQUIRE([AM_ICONV])
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if test -n "$LIBICONV"; then
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dnl We have to erase the cached result of the first AC_LIB_HAVE_LINKFLAGS
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dnl invocation, otherwise the second one will not be run.
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unset ac_cv_libunistring
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glus_save_LIBS="$LIBS"
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LIBS="$LIBS $LIBICONV"
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AC_LIB_HAVE_LINKFLAGS([unistring], [],
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[#include <uniconv.h>], [u8_strconv_from_locale((char*)0);],
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[no, consider installing GNU libunistring])
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if test -n "$LIBUNISTRING"; then
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LIBUNISTRING="$LIBUNISTRING $LIBICONV"
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LTLIBUNISTRING="$LTLIBUNISTRING $LTLIBICONV"
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fi
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LIBS="$glus_save_LIBS"
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fi
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fi
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])
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