m4/lib-prefix.m4

   1 # lib-prefix.m4 serial 4 (gettext-0.14.2)
   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_PREFIX])
  28   dnl By default, look in $includedir and $libdir.
  29   use_additional=yes
  30   AC_LIB_WITH_FINAL_PREFIX([
  31     eval additional_includedir=\"$includedir\"
  32     eval additional_libdir=\"$libdir\"
  33   ])
  34   AC_LIB_ARG_WITH([lib-prefix],
  35 [  --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
  36   --without-lib-prefix    don't search for libraries in includedir and libdir],
  37 [
  38     if test "X$withval" = "Xno"; then
  39       use_additional=no
  40     else
  41       if test "X$withval" = "X"; then
  42         AC_LIB_WITH_FINAL_PREFIX([
  43           eval additional_includedir=\"$includedir\"
  44           eval additional_libdir=\"$libdir\"
  45         ])
  46       else
  47         additional_includedir="$withval/include"
  48         additional_libdir="$withval/lib"
  49       fi
  50     fi
  51 ])
  52   if test $use_additional = yes; then
  53     dnl Potentially add $additional_includedir to $CPPFLAGS.
  54     dnl But don't add it
  55     dnl   1. if it's the standard /usr/include,
  56     dnl   2. if it's already present in $CPPFLAGS,
  57     dnl   3. if it's /usr/local/include and we are using GCC on Linux,
  58     dnl   4. if it doesn't exist as a directory.
  59     if test "X$additional_includedir" != "X/usr/include"; then
  60       haveit=
  61       for x in $CPPFLAGS; do
  62         AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
  63         if test "X$x" = "X-I$additional_includedir"; then
  64           haveit=yes
  65           break
  66         fi
  67       done
  68       if test -z "$haveit"; then
  69         if test "X$additional_includedir" = "X/usr/local/include"; then
  70           if test -n "$GCC"; then
  71             case $host_os in
  72               linux* | gnu* | k*bsd*-gnu) haveit=yes;;
  73             esac
  74           fi
  75         fi
  76         if test -z "$haveit"; then
  77           if test -d "$additional_includedir"; then
  78             dnl Really add $additional_includedir to $CPPFLAGS.
  79             CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
  80           fi
  81         fi
  82       fi
  83     fi
  84     dnl Potentially add $additional_libdir to $LDFLAGS.
  85     dnl But don't add it
  86     dnl   1. if it's the standard /usr/lib,
  87     dnl   2. if it's already present in $LDFLAGS,
  88     dnl   3. if it's /usr/local/lib and we are using GCC on Linux,
  89     dnl   4. if it doesn't exist as a directory.
  90     if test "X$additional_libdir" != "X/usr/lib"; then
  91       haveit=
  92       for x in $LDFLAGS; do
  93         AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
  94         if test "X$x" = "X-L$additional_libdir"; then
  95           haveit=yes
  96           break
  97         fi
  98       done
  99       if test -z "$haveit"; then
 100         if test "X$additional_libdir" = "X/usr/local/lib"; then
 101           if test -n "$GCC"; then
 102             case $host_os in
 103               linux*) haveit=yes;;
 104             esac
 105           fi
 106         fi
 107         if test -z "$haveit"; then
 108           if test -d "$additional_libdir"; then
 109             dnl Really add $additional_libdir to $LDFLAGS.
 110             LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
 111           fi
 112         fi
 113       fi
 114     fi
 115   fi
 116 ])
 117
 118 dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
 119 dnl acl_final_exec_prefix, containing the values to which $prefix and
 120 dnl $exec_prefix will expand at the end of the configure script.
 121 AC_DEFUN([AC_LIB_PREPARE_PREFIX],
 122 [
 123   dnl Unfortunately, prefix and exec_prefix get only finally determined
 124   dnl at the end of configure.
 125   if test "X$prefix" = "XNONE"; then
 126     acl_final_prefix="$ac_default_prefix"
 127   else
 128     acl_final_prefix="$prefix"
 129   fi
 130   if test "X$exec_prefix" = "XNONE"; then
 131     acl_final_exec_prefix='${prefix}'
 132   else
 133     acl_final_exec_prefix="$exec_prefix"
 134   fi
 135   acl_save_prefix="$prefix"
 136   prefix="$acl_final_prefix"
 137   eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
 138   prefix="$acl_save_prefix"
 139 ])
 140
 141 dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
 142 dnl variables prefix and exec_prefix bound to the values they will have
 143 dnl at the end of the configure script.
 144 AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
 145 [
 146   acl_save_prefix="$prefix"
 147   prefix="$acl_final_prefix"
 148   acl_save_exec_prefix="$exec_prefix"
 149   exec_prefix="$acl_final_exec_prefix"
 150   $1
 151   exec_prefix="$acl_save_exec_prefix"
 152   prefix="$acl_save_prefix"
 153 ])