AC_PREREQ([2.12])
AC_DEFUN([AM_CONFIG_HEADER],
+[ifdef([AC_FOREACH],dnl
+ [dnl init our file count if it isn't already
+ m4_ifndef([_AM_Config_Header_Index], m4_define([_AM_Config_Header_Index], [0]))
+ dnl prepare to store our destination file list for use in config.status
+ AC_FOREACH([_AM_File], [$1],
+ [m4_pushdef([_AM_Dest], m4_patsubst(_AM_File, [:.*]))
+ m4_define([_AM_Config_Header_Index], m4_incr(_AM_Config_Header_Index))
+ dnl and add it to the list of files AC keeps track of, along
+ dnl with our hook
+ AC_CONFIG_HEADERS(_AM_File,
+dnl COMMANDS, [, INIT-CMDS]
+[# update the timestamp
+echo timestamp >"AS_ESCAPE(_AM_DIRNAME(]_AM_Dest[))/stamp-h]_AM_Config_Header_Index["
+][$2]m4_ifval([$3], [, [$3]]))dnl AC_CONFIG_HEADERS
+ m4_popdef([_AM_Dest])])],dnl
[AC_CONFIG_HEADER([$1])
AC_OUTPUT_COMMANDS(
ifelse(patsubst([$1], [[^ ]], []),
[],
[test -z "$CONFIG_HEADERS" || echo timestamp >dnl
- patsubst([$1], [^\([^:]*/\)?.*], [\1])stamp-h]),
- [am_indx=1
- for am_file in $1; do
- case " $CONFIG_HEADERS " in
- *" $am_file "*)
- echo timestamp > `echo $am_file | sed 's%:.*%%;s%[^/]*$%%'`stamp-h$am_indx
- ;;
- esac
- am_indx=\`expr \$am_indx + 1\`
- done])
-])
+ patsubst([$1], [^\([^:]*/\)?.*], [\1])stamp-h]),dnl
+[am_indx=1
+for am_file in $1; do
+ case " \$CONFIG_HEADERS " in
+ *" \$am_file "*)
+ am_dir=\`echo \$am_file |sed 's%:.*%%;s%[^/]*\$%%'\`
+ if test -n "\$am_dir"; then
+ am_tmpdir=\`echo \$am_dir |sed 's%^\(/*\).*\$%\1%'\`
+ for am_subdir in \`echo \$am_dir |sed 's%/% %'\`; do
+ am_tmpdir=\$am_tmpdir\$am_subdir/
+ if test ! -d \$am_tmpdir; then
+ mkdir \$am_tmpdir
+ fi
+ done
+ fi
+ echo timestamp > "\$am_dir"stamp-h\$am_indx
+ ;;
+ esac
+ am_indx=\`expr \$am_indx + 1\`
+done])
+])]) # AM_CONFIG_HEADER
+
+# _AM_DIRNAME(PATH)
+# -----------------
+# Like AS_DIRNAME, only do it during macro expansion
+AC_DEFUN([_AM_DIRNAME],
+ [m4_if(m4_regexp([$1], [^.*[^/]//*[^/][^/]*/*$]), -1,
+ m4_if(m4_regexp([$1], [^//\([^/]\|$\)]), -1,
+ m4_if(m4_regexp([$1], [^/.*]), -1,
+ [.],
+ m4_patsubst([$1], [^\(/\).*], [\1])),
+ m4_patsubst([$1], [^\(//\)\([^/].*\|$\)], [\1])),
+ m4_patsubst([$1], [^\(.*[^/]\)//*[^/][^/]*/*$], [\1]))[]dnl
+]) # _AM_DIRNAME
--- /dev/null
+#! /bin/sh
+
+# Test the operation of the _AM_DIRNAME macro from m4/header.m4
+
+. $srcdir/defs || exit 1
+
+cat > configure.in << 'END'
+AC_PLAIN_SCRIPT
+echo "1 /a/path/to/a/file = _AM_DIRNAME([/a/path/to/a/file])"
+echo "2 another/path/to/a/file = _AM_DIRNAME([another/path/to/a/file])"
+echo "3 file = _AM_DIRNAME([file])"
+echo "4 // = _AM_DIRNAME([//])"
+echo "5 //file = _AM_DIRNAME([//file])"
+echo "6 / = _AM_DIRNAME([/])"
+echo "7 /file = _AM_DIRNAME([/file])"
+END
+
+# Fail gracefully if no autoconf.
+$needs_autoconf
+
+$ACLOCAL || exit 1
+$AUTOCONF || exit 1
+
+# fail gracefully if autoconf didn't support AC_PLAIN_SCRIPT, because it won't
+# support our regexps anyhow
+test -s configure || exit 77
+
+./configure >got || exit 1
+
+cat >wanted <<EOF
+1 /a/path/to/a/file = /a/path/to/a
+2 another/path/to/a/file = another/path/to/a
+3 file = .
+4 // = //
+5 //file = //
+6 / = /
+7 /file = /
+EOF
+
+diff -u wanted got || exit 1
+
+exit 0
+