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# lib-prefix.m4 serial 1 (gettext-0.11) |
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dnl Copyright (C) 2001-2002 Free Software Foundation, Inc. |
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dnl This file is free software, distributed under the terms of the GNU |
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dnl General Public License. As a special exception to the GNU General |
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dnl Public License, this file may be distributed as part of a program |
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dnl that contains a configuration script generated by Autoconf, under |
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dnl the same distribution terms as the rest of that program. |
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|
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dnl From Bruno Haible. |
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|
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dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed |
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dnl to access previously installed libraries. The basic assumption is that |
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dnl a user will want packages to use other packages he previously installed |
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dnl with the same --prefix option. |
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dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate |
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dnl libraries, but is otherwise very convenient. |
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AC_DEFUN([AC_LIB_PREFIX], |
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[ |
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AC_BEFORE([$0], [AC_LIB_LINKFLAGS]) |
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AC_REQUIRE([AC_PROG_CC]) |
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AC_REQUIRE([AC_CANONICAL_HOST]) |
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AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
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dnl By default, look in $includedir and $libdir. |
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use_additional=yes |
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AC_LIB_WITH_FINAL_PREFIX([ |
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eval additional_includedir=\"$includedir\" |
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eval additional_libdir=\"$libdir\" |
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]) |
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AC_ARG_WITH([lib-prefix], |
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[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib |
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--without-lib-prefix don't search for libraries in includedir and libdir], |
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[ |
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if test "X$withval" = "Xno"; then |
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use_additional=no |
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else |
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if test "X$withval" = "X"; then |
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AC_LIB_WITH_FINAL_PREFIX([ |
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eval additional_includedir=\"$includedir\" |
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eval additional_libdir=\"$libdir\" |
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]) |
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else |
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additional_includedir="$withval/include" |
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additional_libdir="$withval/lib" |
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fi |
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fi |
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]) |
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if test $use_additional = yes; then |
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dnl Potentially add $additional_includedir to $CPPFLAGS. |
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dnl But don't add it |
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dnl 1. if it's the standard /usr/include, |
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dnl 2. if it's already present in $CPPFLAGS, |
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dnl 3. if it's /usr/local/include and we are using GCC on Linux, |
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dnl 4. if it doesn't exist as a directory. |
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if test "X$additional_includedir" != "X/usr/include"; then |
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haveit= |
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for x in $CPPFLAGS; do |
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
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if test "X$x" = "X-I$additional_includedir"; then |
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haveit=yes |
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break |
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fi |
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done |
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if test -z "$haveit"; then |
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if test "X$additional_includedir" = "X/usr/local/include"; then |
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if test -n "$GCC"; then |
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case $host_os in |
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linux*) haveit=yes;; |
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esac |
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fi |
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fi |
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if test -z "$haveit"; then |
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if test -d "$additional_includedir"; then |
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dnl Really add $additional_includedir to $CPPFLAGS. |
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CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir" |
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fi |
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fi |
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fi |
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fi |
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dnl Potentially add $additional_libdir to $LDFLAGS. |
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dnl But don't add it |
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dnl 1. if it's the standard /usr/lib, |
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dnl 2. if it's already present in $LDFLAGS, |
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dnl 3. if it's /usr/local/lib and we are using GCC on Linux, |
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dnl 4. if it doesn't exist as a directory. |
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if test "X$additional_libdir" != "X/usr/lib"; then |
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haveit= |
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for x in $LDFLAGS; do |
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AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"]) |
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if test "X$x" = "X-L$additional_libdir"; then |
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haveit=yes |
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break |
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fi |
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done |
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if test -z "$haveit"; then |
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if test "X$additional_libdir" = "X/usr/local/lib"; then |
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if test -n "$GCC"; then |
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case $host_os in |
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linux*) haveit=yes;; |
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esac |
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fi |
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fi |
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if test -z "$haveit"; then |
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if test -d "$additional_libdir"; then |
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dnl Really add $additional_libdir to $LDFLAGS. |
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LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir" |
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fi |
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fi |
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fi |
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fi |
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fi |
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]) |
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|
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dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix, |
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dnl acl_final_exec_prefix, containing the values to which $prefix and |
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dnl $exec_prefix will expand at the end of the configure script. |
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AC_DEFUN([AC_LIB_PREPARE_PREFIX], |
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[ |
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dnl Unfortunately, prefix and exec_prefix get only finally determined |
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dnl at the end of configure. |
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if test "X$prefix" = "XNONE"; then |
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acl_final_prefix="$ac_default_prefix" |
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else |
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acl_final_prefix="$prefix" |
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fi |
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if test "X$exec_prefix" = "XNONE"; then |
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acl_final_exec_prefix='${prefix}' |
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else |
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acl_final_exec_prefix="$exec_prefix" |
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fi |
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acl_save_prefix="$prefix" |
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prefix="$acl_final_prefix" |
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eval acl_final_exec_prefix=\"$acl_final_exec_prefix\" |
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prefix="$acl_save_prefix" |
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]) |
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|
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dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the |
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dnl variables prefix and exec_prefix bound to the values they will have |
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dnl at the end of the configure script. |
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AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX], |
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[ |
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acl_save_prefix="$prefix" |
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prefix="$acl_final_prefix" |
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acl_save_exec_prefix="$exec_prefix" |
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exec_prefix="$acl_final_exec_prefix" |
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$1 |
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exec_prefix="$acl_save_exec_prefix" |
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prefix="$acl_save_prefix" |
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]) |
