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1# lib-prefix.m4 serial 1 (gettext-0.11)
2dnl Copyright (C) 2001-2002 Free Software Foundation, Inc.
3dnl This file is free software, distributed under the terms of the GNU
4dnl General Public License. As a special exception to the GNU General
5dnl Public License, this file may be distributed as part of a program
6dnl that contains a configuration script generated by Autoconf, under
7dnl the same distribution terms as the rest of that program.
8
9dnl From Bruno Haible.
10
11dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
12dnl to access previously installed libraries. The basic assumption is that
13dnl a user will want packages to use other packages he previously installed
14dnl with the same --prefix option.
15dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
16dnl libraries, but is otherwise very convenient.
17AC_DEFUN([AC_LIB_PREFIX],
18[
19 AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
20 AC_REQUIRE([AC_PROG_CC])
21 AC_REQUIRE([AC_CANONICAL_HOST])
22 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
23 dnl By default, look in $includedir and $libdir.
24 use_additional=yes
25 AC_LIB_WITH_FINAL_PREFIX([
26 eval additional_includedir=\"$includedir\"
27 eval additional_libdir=\"$libdir\"
28 ])
29 AC_ARG_WITH([lib-prefix],
30[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
31 --without-lib-prefix don't search for libraries in includedir and libdir],
32[
33 if test "X$withval" = "Xno"; then
34 use_additional=no
35 else
36 if test "X$withval" = "X"; then
37 AC_LIB_WITH_FINAL_PREFIX([
38 eval additional_includedir=\"$includedir\"
39 eval additional_libdir=\"$libdir\"
40 ])
41 else
42 additional_includedir="$withval/include"
43 additional_libdir="$withval/lib"
44 fi
45 fi
46])
47 if test $use_additional = yes; then
48 dnl Potentially add $additional_includedir to $CPPFLAGS.
49 dnl But don't add it
50 dnl 1. if it's the standard /usr/include,
51 dnl 2. if it's already present in $CPPFLAGS,
52 dnl 3. if it's /usr/local/include and we are using GCC on Linux,
53 dnl 4. if it doesn't exist as a directory.
54 if test "X$additional_includedir" != "X/usr/include"; then
55 haveit=
56 for x in $CPPFLAGS; do
57 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
58 if test "X$x" = "X-I$additional_includedir"; then
59 haveit=yes
60 break
61 fi
62 done
63 if test -z "$haveit"; then
64 if test "X$additional_includedir" = "X/usr/local/include"; then
65 if test -n "$GCC"; then
66 case $host_os in
67 linux*) haveit=yes;;
68 esac
69 fi
70 fi
71 if test -z "$haveit"; then
72 if test -d "$additional_includedir"; then
73 dnl Really add $additional_includedir to $CPPFLAGS.
74 CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
75 fi
76 fi
77 fi
78 fi
79 dnl Potentially add $additional_libdir to $LDFLAGS.
80 dnl But don't add it
81 dnl 1. if it's the standard /usr/lib,
82 dnl 2. if it's already present in $LDFLAGS,
83 dnl 3. if it's /usr/local/lib and we are using GCC on Linux,
84 dnl 4. if it doesn't exist as a directory.
85 if test "X$additional_libdir" != "X/usr/lib"; then
86 haveit=
87 for x in $LDFLAGS; do
88 AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
89 if test "X$x" = "X-L$additional_libdir"; then
90 haveit=yes
91 break
92 fi
93 done
94 if test -z "$haveit"; then
95 if test "X$additional_libdir" = "X/usr/local/lib"; then
96 if test -n "$GCC"; then
97 case $host_os in
98 linux*) haveit=yes;;
99 esac
100 fi
101 fi
102 if test -z "$haveit"; then
103 if test -d "$additional_libdir"; then
104 dnl Really add $additional_libdir to $LDFLAGS.
105 LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
106 fi
107 fi
108 fi
109 fi
110 fi
111])
112
113dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
114dnl acl_final_exec_prefix, containing the values to which $prefix and
115dnl $exec_prefix will expand at the end of the configure script.
116AC_DEFUN([AC_LIB_PREPARE_PREFIX],
117[
118 dnl Unfortunately, prefix and exec_prefix get only finally determined
119 dnl at the end of configure.
120 if test "X$prefix" = "XNONE"; then
121 acl_final_prefix="$ac_default_prefix"
122 else
123 acl_final_prefix="$prefix"
124 fi
125 if test "X$exec_prefix" = "XNONE"; then
126 acl_final_exec_prefix='${prefix}'
127 else
128 acl_final_exec_prefix="$exec_prefix"
129 fi
130 acl_save_prefix="$prefix"
131 prefix="$acl_final_prefix"
132 eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
133 prefix="$acl_save_prefix"
134])
135
136dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
137dnl variables prefix and exec_prefix bound to the values they will have
138dnl at the end of the configure script.
139AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
140[
141 acl_save_prefix="$prefix"
142 prefix="$acl_final_prefix"
143 acl_save_exec_prefix="$exec_prefix"
144 exec_prefix="$acl_final_exec_prefix"
145 $1
146 exec_prefix="$acl_save_exec_prefix"
147 prefix="$acl_save_prefix"
148])