\s
\S+ # Filename without extension.
\.
- ([^\\.,;:\s]+) # File extension.
+ ([^\/\\.,;:\s]+)# File extension.
(?=\s|\\) # At end of word. Can't use \b because some files have non
# word characters at the end and because \b matches double
# extensions (like .cpp.o). Works always as all lines are
}
# False positives.
+ #
+ # C++ compiler setting.
return 0 if $line =~ /^\s*C\+\+.+?:\s+(?:yes|no)\s*$/;
+ # "Compiling" with no file name.
+ if ($line =~ /^\s*(?:C|c)ompiling\s+(.+?)(?:\.\.\.)?$/) {
+ # $file_extension_regex may need spaces around the filename.
+ return 0 if not " $1 " =~ /$file_extension_regex/o;
+ }
my $file = $1;
# Skip unnecessary tests when only preprocessing.
my $flag_preprocess = 0;
+ my $dependency = 0;
my $preprocess = 0;
my $compile = 0;
my $link = 0;
$preprocess = 1;
$flag_preprocess = 1 if $1 eq '-E';
$compile = 1 if $1 eq '-S' or $1 eq '-c';
+ # Dependency generation for Makefiles. The other flags (-MF -MG -MP
+ # -MT -MQ) are always used with -M/-MM.
+ } elsif ($line =~ /\s(?:-M|-MM)\b/) {
+ $dependency = 1;
# Otherwise assume we are linking.
} else {
$link = 1;
}
+ # -MD/-MMD also cause dependency generation, but they don't imply -E!
+ if ($line =~ /\s(?:-MD|-MMD)\b/) {
+ $dependency = 0;
+ $flag_preprocess = 0;
+ }
+
+ # Dependency generation for Makefiles, no preprocessing or other flags
+ # needed.
+ next if $dependency;
+
# Get all file extensions on this line.
my @extensions = $line =~ /$file_extension_regex/go;
# Ignore all unknown extensions to speedup the search below.