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-rw-r--r--m4/ax_config_dir.m4106
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diff --git a/m4/ax_config_dir.m4 b/m4/ax_config_dir.m4
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+dnl Copied from Audacity 1.3.10 which itself is licensed under the GPL v2 or
+dnl any later version
+
+dnl Function to configure a sub-library now, because we need to know the result
+dnl of the configuration now in order to take decisions.
+dnl We don't worry about whether the configuration worked or not - it is
+dnl assumed that the next thing after this will be a package-specific check to
+dnl see if the package is actually available. (Hint: use pkg-config and
+dnl -uninstalled.pc files if available).
+dnl code based on a simplification of _AC_OUTPUT_SUBDIRS in
+dnl /usr/share/autoconf/autoconf/status.m4 which implements part of
+dnl AC_CONFIG_SUBDIRS
+
+AC_DEFUN([AX_CONFIG_DIR], [
+ # Remove --cache-file and --srcdir arguments so they do not pile up.
+ ax_sub_configure_args=
+ ax_prev=
+ eval "set x $ac_configure_args"
+ shift
+ for ax_arg
+ do
+ if test -n "$ax_prev"; then
+ ax_prev=
+ continue
+ fi
+ case $ax_arg in
+ -cache-file | --cache-file | --cache-fil | --cache-fi \
+ | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+ ax_prev=cache_file ;;
+ -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+ | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \
+ | --c=*)
+ ;;
+ --config-cache | -C)
+ ;;
+ -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+ ax_prev=srcdir ;;
+ -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+ ;;
+ -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+ ax_prev=prefix ;;
+ -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+ ;;
+ *)
+ case $ax_arg in
+ *\'*) ax_arg=`echo "$ax_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ ax_sub_configure_args="$ax_sub_configure_args '$ax_arg'" ;;
+ esac
+ done
+
+ # Always prepend --prefix to ensure using the same prefix
+ # in subdir configurations.
+ ax_arg="--prefix=$prefix"
+ case $ax_arg in
+ *\'*) ax_arg=`echo "$ax_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+ esac
+ ax_sub_configure_args="'$ax_arg' $ax_sub_configure_args"
+
+ # Pass --silent
+ if test "$silent" = yes; then
+ ax_sub_configure_args="--silent $ax_sub_configure_args"
+ fi
+
+ ax_popdir=`pwd`
+ AC_MSG_NOTICE([Configuring sources in $1])
+ dnl for out-of-place builds srcdir and builddir will be different, and
+ dnl builddir may not exist, so we must create it
+ AS_MKDIR_P(["$1"])
+ dnl and also set the variables. As this isn't autoconf, the following may be
+ dnl risky:
+ _AC_SRCDIRS(["$1"])
+ cd "$1"
+
+ # Check for guested configure; otherwise get Cygnus style configure.
+ if test -f "configure.gnu"; then
+ ax_sub_configure=$ac_srcdir/configure.gnu
+ elif test -f "$ac_srcdir/configure"; then
+ ax_sub_configure=$ac_srcdir/configure
+ elif test -f "$ac_srcdir/configure.in"; then
+ # This should be Cygnus configure.
+ ax_sub_configure=$ac_aux_dir/configure
+ else
+ AC_MSG_WARN([no configuration information is in $1])
+ ax_sub_configure=
+ fi
+
+ # The recursion is here.
+ if test -n "$ax_sub_configure"; then
+ # Make the cache file name correct relative to the subdirectory.
+ case $cache_file in
+ [[\\/]]* | ?:[[\\/]]* ) ax_sub_cache_file=$cache_file ;;
+ *) # Relative name.
+ ax_sub_cache_file=$ac_top_build_prefix$cache_file ;;
+ esac
+
+ AC_MSG_NOTICE([running $SHELL $ax_sub_configure $ax_sub_configure_args --cache-file=$ax_sub_cache_file --srcdir=$ac_srcdir])
+ # The eval makes quoting arguments work.
+ eval "\$SHELL \"\$ax_sub_configure\" $ax_sub_configure_args \
+ --cache-file=\"\$ax_sub_cache_file\" --srcdir=\"\$ax_srcdir\""
+ fi
+
+ cd "$ax_popdir"
+ AC_MSG_NOTICE([Done configuring in $1])
+])
+