/[jscoverage]/trunk/m4/lib-prefix.m4
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Annotation of /trunk/m4/lib-prefix.m4

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Revision 174 - (hide annotations)
Sat Sep 20 23:27:14 2008 UTC (11 years, 8 months ago) by siliconforks
File size: 6686 byte(s)
Provide better character encoding support.
1 siliconforks 174 # lib-prefix.m4 serial 5 (gettext-0.15)
2     dnl Copyright (C) 2001-2005 Free Software Foundation, Inc.
3     dnl This file is free software; the Free Software Foundation
4     dnl gives unlimited permission to copy and/or distribute it,
5     dnl with or without modifications, as long as this notice is preserved.
6    
7     dnl From Bruno Haible.
8    
9     dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
10     dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
11     dnl require excessive bracketing.
12     ifdef([AC_HELP_STRING],
13     [AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
14     [AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
15    
16     dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
17     dnl to access previously installed libraries. The basic assumption is that
18     dnl a user will want packages to use other packages he previously installed
19     dnl with the same --prefix option.
20     dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
21     dnl libraries, but is otherwise very convenient.
22     AC_DEFUN([AC_LIB_PREFIX],
23     [
24     AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
25     AC_REQUIRE([AC_PROG_CC])
26     AC_REQUIRE([AC_CANONICAL_HOST])
27     AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
28     AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
29     dnl By default, look in $includedir and $libdir.
30     use_additional=yes
31     AC_LIB_WITH_FINAL_PREFIX([
32     eval additional_includedir=\"$includedir\"
33     eval additional_libdir=\"$libdir\"
34     ])
35     AC_LIB_ARG_WITH([lib-prefix],
36     [ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
37     --without-lib-prefix don't search for libraries in includedir and libdir],
38     [
39     if test "X$withval" = "Xno"; then
40     use_additional=no
41     else
42     if test "X$withval" = "X"; then
43     AC_LIB_WITH_FINAL_PREFIX([
44     eval additional_includedir=\"$includedir\"
45     eval additional_libdir=\"$libdir\"
46     ])
47     else
48     additional_includedir="$withval/include"
49     additional_libdir="$withval/$acl_libdirstem"
50     fi
51     fi
52     ])
53     if test $use_additional = yes; then
54     dnl Potentially add $additional_includedir to $CPPFLAGS.
55     dnl But don't add it
56     dnl 1. if it's the standard /usr/include,
57     dnl 2. if it's already present in $CPPFLAGS,
58     dnl 3. if it's /usr/local/include and we are using GCC on Linux,
59     dnl 4. if it doesn't exist as a directory.
60     if test "X$additional_includedir" != "X/usr/include"; then
61     haveit=
62     for x in $CPPFLAGS; do
63     AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
64     if test "X$x" = "X-I$additional_includedir"; then
65     haveit=yes
66     break
67     fi
68     done
69     if test -z "$haveit"; then
70     if test "X$additional_includedir" = "X/usr/local/include"; then
71     if test -n "$GCC"; then
72     case $host_os in
73     linux* | gnu* | k*bsd*-gnu) haveit=yes;;
74     esac
75     fi
76     fi
77     if test -z "$haveit"; then
78     if test -d "$additional_includedir"; then
79     dnl Really add $additional_includedir to $CPPFLAGS.
80     CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
81     fi
82     fi
83     fi
84     fi
85     dnl Potentially add $additional_libdir to $LDFLAGS.
86     dnl But don't add it
87     dnl 1. if it's the standard /usr/lib,
88     dnl 2. if it's already present in $LDFLAGS,
89     dnl 3. if it's /usr/local/lib and we are using GCC on Linux,
90     dnl 4. if it doesn't exist as a directory.
91     if test "X$additional_libdir" != "X/usr/$acl_libdirstem"; then
92     haveit=
93     for x in $LDFLAGS; do
94     AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
95     if test "X$x" = "X-L$additional_libdir"; then
96     haveit=yes
97     break
98     fi
99     done
100     if test -z "$haveit"; then
101     if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem"; then
102     if test -n "$GCC"; then
103     case $host_os in
104     linux*) haveit=yes;;
105     esac
106     fi
107     fi
108     if test -z "$haveit"; then
109     if test -d "$additional_libdir"; then
110     dnl Really add $additional_libdir to $LDFLAGS.
111     LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
112     fi
113     fi
114     fi
115     fi
116     fi
117     ])
118    
119     dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
120     dnl acl_final_exec_prefix, containing the values to which $prefix and
121     dnl $exec_prefix will expand at the end of the configure script.
122     AC_DEFUN([AC_LIB_PREPARE_PREFIX],
123     [
124     dnl Unfortunately, prefix and exec_prefix get only finally determined
125     dnl at the end of configure.
126     if test "X$prefix" = "XNONE"; then
127     acl_final_prefix="$ac_default_prefix"
128     else
129     acl_final_prefix="$prefix"
130     fi
131     if test "X$exec_prefix" = "XNONE"; then
132     acl_final_exec_prefix='${prefix}'
133     else
134     acl_final_exec_prefix="$exec_prefix"
135     fi
136     acl_save_prefix="$prefix"
137     prefix="$acl_final_prefix"
138     eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
139     prefix="$acl_save_prefix"
140     ])
141    
142     dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
143     dnl variables prefix and exec_prefix bound to the values they will have
144     dnl at the end of the configure script.
145     AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
146     [
147     acl_save_prefix="$prefix"
148     prefix="$acl_final_prefix"
149     acl_save_exec_prefix="$exec_prefix"
150     exec_prefix="$acl_final_exec_prefix"
151     $1
152     exec_prefix="$acl_save_exec_prefix"
153     prefix="$acl_save_prefix"
154     ])
155    
156     dnl AC_LIB_PREPARE_MULTILIB creates a variable acl_libdirstem, containing
157     dnl the basename of the libdir, either "lib" or "lib64".
158     AC_DEFUN([AC_LIB_PREPARE_MULTILIB],
159     [
160     dnl There is no formal standard regarding lib and lib64. The current
161     dnl practice is that on a system supporting 32-bit and 64-bit instruction
162     dnl sets or ABIs, 64-bit libraries go under $prefix/lib64 and 32-bit
163     dnl libraries go under $prefix/lib. We determine the compiler's default
164     dnl mode by looking at the compiler's library search path. If at least
165     dnl of its elements ends in /lib64 or points to a directory whose absolute
166     dnl pathname ends in /lib64, we assume a 64-bit ABI. Otherwise we use the
167     dnl default, namely "lib".
168     acl_libdirstem=lib
169     searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`
170     if test -n "$searchpath"; then
171     acl_save_IFS="${IFS= }"; IFS=":"
172     for searchdir in $searchpath; do
173     if test -d "$searchdir"; then
174     case "$searchdir" in
175     */lib64/ | */lib64 ) acl_libdirstem=lib64 ;;
176     *) searchdir=`cd "$searchdir" && pwd`
177     case "$searchdir" in
178     */lib64 ) acl_libdirstem=lib64 ;;
179     esac ;;
180     esac
181     fi
182     done
183     IFS="$acl_save_IFS"
184     fi
185     ])

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