| 1 | # lib-prefix.m4 serial 1 (gettext-0.11)
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| 2 | dnl Copyright (C) 2001-2002 Free Software Foundation, Inc.
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| 3 | dnl This file is free software, distributed under the terms of the GNU
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| 4 | dnl General Public License. As a special exception to the GNU General
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| 5 | dnl Public License, this file may be distributed as part of a program
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| 6 | dnl that contains a configuration script generated by Autoconf, under
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| 7 | dnl the same distribution terms as the rest of that program.
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| 8 |
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| 9 | dnl From Bruno Haible.
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| 10 |
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| 11 | dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
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| 12 | dnl to access previously installed libraries. The basic assumption is that
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| 13 | dnl a user will want packages to use other packages he previously installed
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| 14 | dnl with the same --prefix option.
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| 15 | dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
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| 16 | dnl libraries, but is otherwise very convenient.
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| 17 | AC_DEFUN([AC_LIB_PREFIX],
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| 18 | [
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| 19 | AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
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| 20 | AC_REQUIRE([AC_PROG_CC])
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| 21 | AC_REQUIRE([AC_CANONICAL_HOST])
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| 22 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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| 23 | dnl By default, look in $includedir and $libdir.
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| 24 | use_additional=yes
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| 25 | AC_LIB_WITH_FINAL_PREFIX([
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| 26 | eval additional_includedir=\"$includedir\"
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| 27 | eval additional_libdir=\"$libdir\"
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| 28 | ])
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| 29 | AC_ARG_WITH([lib-prefix],
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| 30 | [ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
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| 31 | --without-lib-prefix don't search for libraries in includedir and libdir],
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| 32 | [
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| 33 | if test "X$withval" = "Xno"; then
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| 34 | use_additional=no
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| 35 | else
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| 36 | if test "X$withval" = "X"; then
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| 37 | AC_LIB_WITH_FINAL_PREFIX([
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| 38 | eval additional_includedir=\"$includedir\"
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| 39 | eval additional_libdir=\"$libdir\"
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| 40 | ])
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| 41 | else
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| 42 | additional_includedir="$withval/include"
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| 43 | additional_libdir="$withval/lib"
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| 44 | fi
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| 45 | fi
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| 46 | ])
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| 47 | if test $use_additional = yes; then
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| 48 | dnl Potentially add $additional_includedir to $CPPFLAGS.
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| 49 | dnl But don't add it
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| 50 | dnl 1. if it's the standard /usr/include,
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| 51 | dnl 2. if it's already present in $CPPFLAGS,
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| 52 | dnl 3. if it's /usr/local/include and we are using GCC on Linux,
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| 53 | dnl 4. if it doesn't exist as a directory.
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| 54 | if test "X$additional_includedir" != "X/usr/include"; then
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| 55 | haveit=
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| 56 | for x in $CPPFLAGS; do
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| 57 | AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
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| 58 | if test "X$x" = "X-I$additional_includedir"; then
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| 59 | haveit=yes
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| 60 | break
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| 61 | fi
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| 62 | done
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| 63 | if test -z "$haveit"; then
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| 64 | if test "X$additional_includedir" = "X/usr/local/include"; then
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| 65 | if test -n "$GCC"; then
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| 66 | case $host_os in
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| 67 | linux*) haveit=yes;;
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| 68 | esac
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| 69 | fi
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| 70 | fi
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| 71 | if test -z "$haveit"; then
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| 72 | if test -d "$additional_includedir"; then
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