contrib/buildsystems: handle quoted spaces in filenames

The engine.pl script expects file names not to contain spaces. However,
paths with spaces are quite prevalent on Windows. Use shellwords() rather
than split() to parse them correctly.

Helped-by: Junio C Hamano <[email protected]>
Signed-off-by: Philip Oakley <[email protected]>
Signed-off-by: Johannes Schindelin <[email protected]>

Author: Philip Oakley

contrib/buildsystems/engine.pl

@@ -12,6 +12,7 @@
 use File::Spec;
 use Cwd;
 use Generators;
+use Text::ParseWords;
 
 my (%build_structure, %compile_options, @makedry);
 my $out_dir = getcwd();
@@ -231,7 +232,7 @@ sub removeDuplicates
 sub handleCompileLine
 {
     my ($line, $lineno) = @_;
-    my @parts = split(' ', $line);
+    my @parts = shellwords($line);
     my $sourcefile;
     shift(@parts); # ignore cmd
     while (my $part = shift @parts) {
@@ -265,7 +266,7 @@ sub handleLibLine
     my (@objfiles, @lflags, $libout, $part);
     # kill cmd and rm 'prefix'
     $line =~ s/^rm -f .* && .* rcs //;
-    my @parts = split(' ', $line);
+    my @parts = shellwords($line);
     while ($part = shift @parts) {
         if ($part =~ /^-/) {
             push(@lflags, $part);
@@ -306,7 +307,7 @@ sub handleLinkLine
 {
     my ($line, $lineno) = @_;
     my (@objfiles, @lflags, @libs, $appout, $part);
-    my @parts = split(' ', $line);
+    my @parts = shellwords($line);
     shift(@parts); # ignore cmd
     while ($part = shift @parts) {
         if ($part =~ /^-IGNORE/) {