1 # lib-prefix.m4 serial 7 (gettext-0.18) 2 dnl Copyright (C) 2001-2005, 2008-2012 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 157 dnl - a variable acl_libdirstem, containing the basename of the libdir, either 158 dnl "lib" or "lib64" or "lib/64", 159 dnl - a variable acl_libdirstem2, as a secondary possible value for 160 dnl acl_libdirstem, either the same as acl_libdirstem or "lib/sparcv9" or 161 dnl "lib/amd64". 162 AC_DEFUN([AC_LIB_PREPARE_MULTILIB], 163 [ 164 dnl There is no formal standard regarding lib and lib64. 165 dnl On glibc systems, the current practice is that on a system supporting 166 dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under 167 dnl $prefix/lib64 and 32-bit libraries go under $prefix/lib. We determine 168 dnl the compiler's default mode by looking at the compiler's library search 169 dnl path. If at least one of its elements ends in /lib64 or points to a 170 dnl directory whose absolute pathname ends in /lib64, we assume a 64-bit ABI. 171 dnl Otherwise we use the default, namely "lib". 172 dnl On Solaris systems, the current practice is that on a system supporting 173 dnl 32-bit and 64-bit instruction sets or ABIs, 64-bit libraries go under 174 dnl $prefix/lib/64 (which is a symlink to either $prefix/lib/sparcv9 or 175 dnl $prefix/lib/amd64) and 32-bit libraries go under $prefix/lib. 176 AC_REQUIRE([AC_CANONICAL_HOST]) 177 acl_libdirstem=lib 178 acl_libdirstem2= 179 case "$host_os" in 180 solaris*) 181 dnl See Solaris 10 Software Developer Collection > Solaris 64-bit Developer's Guide > The Development Environment 182 dnl <http://docs.sun.com/app/docs/doc/816-5138/dev-env?l=en&a=view>. 183 dnl "Portable Makefiles should refer to any library directories using the 64 symbolic link." 184 dnl But we want to recognize the sparcv9 or amd64 subdirectory also if the 185 dnl symlink is missing, so we set acl_libdirstem2 too. 186 AC_CACHE_CHECK([for 64-bit host], [gl_cv_solaris_64bit], 187 [AC_EGREP_CPP([sixtyfour bits], [ 188 #ifdef _LP64 189 sixtyfour bits 190 #endif 191 ], [gl_cv_solaris_64bit=yes], [gl_cv_solaris_64bit=no]) 192 ]) 193 if test $gl_cv_solaris_64bit = yes; then 194 acl_libdirstem=lib/64 195 case "$host_cpu" in 196 sparc*) acl_libdirstem2=lib/sparcv9 ;; 197 i*86 | x86_64) acl_libdirstem2=lib/amd64 ;; 198 esac 199 fi 200 ;; 201 *) 202 searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'` 203 if test -n "$searchpath"; then 204 acl_save_IFS="${IFS= }"; IFS=":" 205 for searchdir in $searchpath; do 206 if test -d "$searchdir"; then 207 case "$searchdir" in 208 */lib64/ | */lib64 ) acl_libdirstem=lib64 ;; 209 */../ | */.. ) 210 # Better ignore directories of this form. They are misleading. 211 ;; 212 *) searchdir=`cd "$searchdir" && pwd` 213 case "$searchdir" in 214 */lib64 ) acl_libdirstem=lib64 ;; 215 esac ;; 216 esac 217 fi 218 done 219 IFS="$acl_save_IFS" 220 fi 221 ;; 222 esac 223 test -n "$acl_libdirstem2" || acl_libdirstem2="$acl_libdirstem" 224 ]) 225
