1 # lib-prefix.m4 serial 1 (gettext-0.11) 2 dnl Copyright (C) 2001-2002 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_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed 12 dnl to access previously installed libraries. The basic assumption is that 13 dnl a user will want packages to use other packages he previously installed 14 dnl with the same --prefix option. 15 dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate 16 dnl libraries, but is otherwise very convenient. 17 AC_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 ]) 112 113 dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix, 114 dnl acl_final_exec_prefix, containing the values to which $prefix and 115 dnl $exec_prefix will expand at the end of the configure script. 116 AC_DEFUN([AC_LIB_PREPARE_PREFIX], 117 [ 118 dnl Unfortunately, prefix and exec_prefix get only finally determined 119 dnl at the end of configure. 120 if test "X$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="$acl_save_prefix" 134 ]) 135 136 dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the 137 dnl variables prefix and exec_prefix bound to the values they will have 138 dnl at the end of the configure script. 139 AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX], 140 [ 141 acl_save_prefix="$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 ]) 149
