1 # 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 ]) 186
