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1# lib-prefix.m4 serial 3 (gettext-0.13)
2dnl Copyright (C) 2001-2003 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_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
12dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
13dnl require excessive bracketing.
14ifdef([AC_HELP_STRING],
15[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
16[AC_DEFUN([AC_][LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
17
18dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
19dnl to access previously installed libraries. The basic assumption is that
20dnl a user will want packages to use other packages he previously installed
21dnl with the same --prefix option.
22dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
23dnl libraries, but is otherwise very convenient.
24AC_DEFUN([AC_LIB_PREFIX],
25[
26  AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
27  AC_REQUIRE([AC_PROG_CC])
28  AC_REQUIRE([AC_CANONICAL_HOST])
29  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
30  dnl By default, look in $includedir and $libdir.
31  use_additional=yes
32  AC_LIB_WITH_FINAL_PREFIX([
33    eval additional_includedir=\"$includedir\"
34    eval additional_libdir=\"$libdir\"
35  ])
36  AC_LIB_ARG_WITH([lib-prefix],
37[  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
38  --without-lib-prefix    don't search for libraries in includedir and libdir],
39[
40    if test "X$withval" = "Xno"; then
41      use_additional=no
42    else
43      if test "X$withval" = "X"; then
44        AC_LIB_WITH_FINAL_PREFIX([
45          eval additional_includedir=\"$includedir\"
46          eval additional_libdir=\"$libdir\"
47        ])
48      else
49        additional_includedir="$withval/include"
50        additional_libdir="$withval/lib"
51      fi
52    fi
53])
54  if test $use_additional = yes; then
55    dnl Potentially add $additional_includedir to $CPPFLAGS.
56    dnl But don't add it
57    dnl   1. if it's the standard /usr/include,
58    dnl   2. if it's already present in $CPPFLAGS,
59    dnl   3. if it's /usr/local/include and we are using GCC on Linux,
60    dnl   4. if it doesn't exist as a directory.
61    if test "X$additional_includedir" != "X/usr/include"; then
62      haveit=
63      for x in $CPPFLAGS; do
64        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
65        if test "X$x" = "X-I$additional_includedir"; then
66          haveit=yes
67          break
68        fi
69      done
70      if test -z "$haveit"; then
71        if test "X$additional_includedir" = "X/usr/local/include"; then
72          if test -n "$GCC"; then
73            case $host_os in
74              linux*) haveit=yes;;
75            esac
76          fi
77        fi
78        if test -z "$haveit"; then
79          if test -d "$additional_includedir"; then
80            dnl Really add $additional_includedir to $CPPFLAGS.
81            CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
82          fi
83        fi
84      fi
85    fi
86    dnl Potentially add $additional_libdir to $LDFLAGS.
87    dnl But don't add it
88    dnl   1. if it's the standard /usr/lib,
89    dnl   2. if it's already present in $LDFLAGS,
90    dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
91    dnl   4. if it doesn't exist as a directory.
92    if test "X$additional_libdir" != "X/usr/lib"; then
93      haveit=
94      for x in $LDFLAGS; do
95        AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
96        if test "X$x" = "X-L$additional_libdir"; then
97          haveit=yes
98          break
99        fi
100      done
101      if test -z "$haveit"; then
102        if test "X$additional_libdir" = "X/usr/local/lib"; then
103          if test -n "$GCC"; then
104            case $host_os in
105              linux*) haveit=yes;;
106            esac
107          fi
108        fi
109        if test -z "$haveit"; then
110          if test -d "$additional_libdir"; then
111            dnl Really add $additional_libdir to $LDFLAGS.
112            LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
113          fi
114        fi
115      fi
116    fi
117  fi
118])
119
120dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
121dnl acl_final_exec_prefix, containing the values to which $prefix and
122dnl $exec_prefix will expand at the end of the configure script.
123AC_DEFUN([AC_LIB_PREPARE_PREFIX],
124[
125  dnl Unfortunately, prefix and exec_prefix get only finally determined
126  dnl at the end of configure.
127  if test "X$prefix" = "XNONE"; then
128    acl_final_prefix="$ac_default_prefix"
129  else
130    acl_final_prefix="$prefix"
131  fi
132  if test "X$exec_prefix" = "XNONE"; then
133    acl_final_exec_prefix='${prefix}'
134  else
135    acl_final_exec_prefix="$exec_prefix"
136  fi
137  acl_save_prefix="$prefix"
138  prefix="$acl_final_prefix"
139  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
140  prefix="$acl_save_prefix"
141])
142
143dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
144dnl variables prefix and exec_prefix bound to the values they will have
145dnl at the end of the configure script.
146AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
147[
148  acl_save_prefix="$prefix"
149  prefix="$acl_final_prefix"
150  acl_save_exec_prefix="$exec_prefix"
151  exec_prefix="$acl_final_exec_prefix"
152  $1
153  exec_prefix="$acl_save_exec_prefix"
154  prefix="$acl_save_prefix"
155])
156