config/lib-prefix.m4

   1 # lib-prefix.m4 serial 2 (gettext-0.12)
   2 dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
   3 dnl This file is free software, distributed under the terms of the GNU
   4 dnl General Public License.  As a special exception to the GNU General
   5 dnl Public License, this file may be distributed as part of a program
   6 dnl that contains a configuration script generated by Autoconf, under
   7 dnl the same distribution terms as the rest of that program.
   8
   9 dnl From Bruno Haible.
  10
  11 dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
  12 dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
  13 dnl require excessive bracketing.
  14 ifdef([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
  18 dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
  19 dnl to access previously installed libraries. The basic assumption is that
  20 dnl a user will want packages to use other packages he previously installed
  21 dnl with the same --prefix option.
  22 dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
  23 dnl libraries, but is otherwise very convenient.
  24 AC_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
 120 dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
 121 dnl acl_final_exec_prefix, containing the values to which $prefix and
 122 dnl $exec_prefix will expand at the end of the configure script.
 123 AC_DEFUN([AC_LIB_PREPARE_PREFIX],
 124 [
 125   dnl Unfortunately, prefix and exec_prefix get only finally determined
 126   dnl at the end of configure.
 127   if test "X$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="$acl_save_prefix"
 141 ])
 142
 143 dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
 144 dnl variables prefix and exec_prefix bound to the values they will have
 145 dnl at the end of the configure script.
 146 AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
 147 [
 148   acl_save_prefix="$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 ])