comparison kdiff3/admin/conf.change.pl @ 2:53b8ecbce0cb

Initial revision

+#!/usr/bin/perl -w
+
+# this script patches a config.status file, to use our own perl script
+# in the main loop
+# we do it this way to circumvent hacking (and thereby including)
+# autoconf function (which are GPL) into our LGPL acinclude.m4.in
+# written by Michael Matz <[e-mail]>
+# adapted by Dirk Mueller <[e-mail]>
+
+# we have to change two places
+# 1. the splitting of the substitutions into chunks of 90 (or even 48 in
+#    later autoconf's
+# 2. the big main loop which patches all Makefile.in's
+use File::Basename;
+
+my $ac_aux_dir = dirname($0);
+my ($flag);
+local $ac_version = 0;
+my $vpath_seen = 0;
+$flag = 0;
+
+while (<>) {
+# usage of $flag: 0 -- we have seen nothing yet
+#   1 -- we are in (1)
+#   2 -- we have ended (1)
+#   3 -- we are in (2)
+#   4 -- we ended (2)
+
+    if ($flag == 4) {
+        print;
+    } elsif ($flag == 0) {
+# 1. begins with (including): "ac_max_sed_\S+\s*=\s*[0-9]+..."
+#    ends with (excluding) "CONFIG_FILE=..."
+#    in later autoconf (2.14.1) there is no CONFIG_FILES= line,
+#    but instead the (2) directly follow (1)
+        if (/^\s*ac_max_sed_([a-z]+).*=\s*([0-9]+)/ ) {
+	    $flag = 1;
+	    if ($1 eq 'lines') {
+                # lets hope its different with 2141, 
+                # wasn't able to verify that
+              if ($2 eq '48') {
+                $ac_version = 250;
+              }
+              else {
+	        $ac_version = 2141;
+              }
+	    } elsif ($1 eq 'cmds') {
+	        $ac_version = 213;
+	    }
+	    # hmm, we don't know the autoconf version, but we try anyway
+	} else {
+	    print;
+	}
+    } elsif ($flag == 1) {
+        if (/^\s*CONFIG_FILES=/ && ($ac_version != 250)) {
+	     print;
+	     $flag = 2;
+	} elsif (/^\s*for\s+ac_file\s+in\s+.*CONFIG_FILES/ ) {
+	     $flag = 3;
+	}
+    } elsif ($flag == 2) {
+# 2. begins with: "for ac_file in.*CONFIG_FILES"  (the next 'for' after (1))
+#    end with: "rm -f conftest.s\*"
+# on autoconf 250, it ends with '# CONFIG_HEADER section'
+	if (/^\s*for\s+ac_file\s+in\s+.*CONFIG_FILES/ ) {
+	    $flag = 3;
+	} else {
+	    print;
+	}
+    } elsif ($flag == 3) {
+        if (/^\s*rm\s+-f\s+conftest/ ) {
+	    $flag = 4;
+	    &insert_main_loop();
+	} elsif (/^\s*rm\s+-f\s+.*ac_cs_root/ ) {
+	    $flag = 4;
+	    &insert_main_loop();
+	    #die "hhhhhhh";
+	    if ($ac_version != 2141) {
+	        print STDERR "hmm, don't know autoconf version\n";
+	    }
+        } elsif (/^\#\s*CONFIG_HEADER section.*/) {
+          $flag = 4;
+          &insert_main_loop();
+          if($ac_version != 250) {
+            print STDERR "hmm, something went wrong :-(\n";
+          }
+	} elsif (/VPATH/ ) {
+	    $vpath_seen = 1;
+	}
+    }
+}
+
+die "wrong input (flag != 4)" unless $flag == 4;
+print STDERR "hmm, don't know autoconf version\n" unless $ac_version;
+
+sub insert_main_loop {
+
+  if ($ac_version == 250) {
+    &insert_main_loop_250();
+  }
+  else {
+    &insert_main_loop_213();
+  }
+}
+
+sub insert_main_loop_250 {
+
+  print <<EOF;
+  #echo Doing the fast build of Makefiles -- autoconf $ac_version
+EOF
+    if ($vpath_seen) {
+        print <<EOF;
+        # VPATH subst was seen in original config.status main loop
+  echo '/^[ 	]*VPATH[ 	]*=[^:]*\$/d' >>\$tmp/subs.sed
+EOF
+      }
+  print <<EOF;
+  rm -f \$tmp/subs.files
+  for ac_file in .. \$CONFIG_FILES ; do
+      if test "x\$ac_file" != x..; then
+          echo \$ac_file >> \$tmp/subs.files
+      fi
+  done
+  if test -f \$tmp/subs.files ; then
+      perl $ac_aux_dir/config.pl "\$tmp/subs.sed" "\$tmp/subs.files" "\$srcdir" "\$INSTALL"
+  fi
+  rm -f \$tmp/subs.files
+
+fi
+EOF
+  return;
+}
+
+sub insert_main_loop_213 {
+    print <<EOF;
+#echo Doing the fast build of Makefiles -- autoconf $ac_version
+if test "x\$ac_cs_root" = "x" ; then
+    ac_cs_root=conftest
+fi
+EOF
+    if ($vpath_seen) {
+      print <<EOF;
+# VPATH subst was seen in original config.status main loop
+echo '/^[ 	]*VPATH[ 	]*=[^:]*\$/d' >> \$ac_cs_root.subs
+EOF
+    }
+    print <<EOF;
+rm -f \$ac_cs_root.sacfiles
+for ac_file in .. \$CONFIG_FILES ; do
+    if test "x\$ac_file" != x..; then
+        echo \$ac_file >> \$ac_cs_root.sacfiles
+    fi
+done
+if test -f \$ac_cs_root.sacfiles ; then
+    perl $ac_aux_dir/config.pl "\$ac_cs_root.subs" "\$ac_cs_root.sacfiles" "\$ac_given_srcdir" "\$ac_given_INSTALL"
+fi
+rm -f \$ac_cs_root.s*
+
+EOF
+    return;
+}