$SIG{'INT'} = 'quit_upon_signal';
$SIG{'QUIT'} = 'quit_upon_signal';
-&mangle_command_line_args();
+&mangle_command_line_args(@ARGV);
if ( $Status ) {
print stderr $Usage;
@Import_dirs = split(/:/,$Import_dirs);
@Include_dirs = split(/\s+/,$Include_dirs); # still has -I's in it
-# set up array of ignored modules
-local(@dirs) = ($INSTALLING) ?
- ("$InstLibDirGhc/imports/std")
- : ("$TopPwd/ghc/lib/std");
-if (!$Include_prelude) {
- push(@Ignore_dirs, @dirs);
-} else {
- push(@Import_dirs, @dirs);
-}
-
-foreach $lib ( @Syslibs ) {
- local($dir);
-
- # Yuck ^ 2
- if ( $lib eq 'win32' && ! $INSTALLING ) {
- $dir = "${TopPwd}/hslibs/${lib}/src";
- } elsif ( $lib eq 'com' && ! $INSTALLING ) {
- $dir = "${TopPwd}/hdirect/lib";
- } else {
- $dir = ($INSTALLING) ? "${InstLibDirGhc}/imports/${lib}"
- : "${TopPwd}/ghc/lib/${lib}";
- }
- if (!$Include_prelude) {
- push(@Ignore_dirs,$dir);
- } else {
- push(@Import_dirs, $dir);
- }
-}
-
-
# NB: We keep the scalar-variable equivalents to use in error messages
+&gather_import_dirs();
+
if ( ! $Makefile && -f 'makefile' ) {
$Makefile = 'makefile';
} elsif ( ! $Makefile && -f 'Makefile') {
exit 0;
sub mangle_command_line_args {
- while($_ = $ARGV[0]) {
- shift(@ARGV);
+ local(@Args) = @_;
+
+ while($_ = $Args[0]) {
+ shift(@Args);
if ( /^--$/ ) {
$Dashdashes_seen++;
} elsif ( /^-I/ ) {
$Include_dirs .= " $_";
} elsif ( /^-syslib$/ ) {
- push(@Syslibs, &grab_arg_arg($_,''));
+ push(@Syslibs, &grab_arg_arg(*Args,$_,''));
} elsif ( /^-fglasgow-exts$/ ) {
push(@Syslibs, 'exts');
} elsif ( /^-concurrent$/ ) {
} elsif ( /^-w$/ ) {
$Warnings = 0;
} elsif ( /^-f(.*)/ ) {
- $Makefile = &grab_arg_arg('-f',$1);
+ $Makefile = &grab_arg_arg(*Args,'-f',$1);
} elsif ( /^-o(.*)/ ) {
- local($suff) = &grab_arg_arg('-o',$1);
+ local($suff) = &grab_arg_arg(*Args,'-o',$1);
# Weed out existing entry .. there must be a better way of doing this
# with arrays (non-assoc) ! -- sof
@Obj_suffix = grep(!/$suff/,@Obj_suffix);
# --exclude-module=mod => it's stable, trust me!
} elsif ( /^-(x|-exclude-module=)(.*)/ ) {
- local($thing) = &grab_arg_arg($1,$2);
+ local($thing) = &grab_arg_arg(*Args,$1,$2);
$IgnoreMe{$thing} = 'Y';
} elsif ( /^-(X|-exclude-directory=)(.*)/ ) {
- foreach $d ( split(/:/,&grab_arg_arg($1, $2)) ) {
+ foreach $d ( split(/:/,&grab_arg_arg(*Args,$1, $2)) ) {
push(@Ignore_dirs,"$d");
}
} elsif ( /^--include-module=(.*)/ ) {
- local($thing) = &grab_arg_arg($1,$2);
+ local($thing) = &grab_arg_arg(*Args,$1,$2);
$IgnoreMe{$thing} = 'n';
} elsif ( /^--include-prelude$/ ) {
$Include_prelude = 1;
} elsif ( /^-s(.*)/ ) {
- local($suff) = &grab_arg_arg('-s',$1);
+ local($suff) = &grab_arg_arg(*Args,'-s',$1);
push(@File_suffix, $suff);
} elsif ( /^-/ ) {
print STDERR "$Pgm: unknown option ignored: $_\n";
}
sub grab_arg_arg {
- local($option, $rest_of_arg) = @_;
+ local(*Args, $option, $rest_of_arg) = @_;
if ($rest_of_arg) {
return($rest_of_arg);
- } elsif ($#ARGV >= 0) {
- local($temp) = $ARGV[0]; shift(@ARGV);
+ } elsif ($#Args >= 0) {
+ local($temp) = $Args[0]; shift(@Args);
return($temp);
} else {
print STDERR "$Pgm: no argument following $option option\n";
}
}
+sub gather_import_dirs {
+
+ # set up array of ignored modules
+ local(@dirs) = ($INSTALLING) ?
+ ("$InstLibDirGhc/imports/std")
+ : ("$TopPwd/ghc/lib/std");
+
+ if (!$Include_prelude) {
+ push(@Ignore_dirs, @dirs);
+ } else {
+ push(@Import_dirs, @dirs);
+ }
+
+ foreach $lib ( @Syslibs ) {
+ local($dir);
+
+ # Yuck ^ 2
+ if ( $lib eq 'win32' && ! $INSTALLING ) {
+ $dir = "${TopPwd}/hslibs/${lib}/src";
+ } elsif ( $lib eq 'com' && ! $INSTALLING ) {
+ $dir = "${TopPwd}/hdirect/lib";
+ } else {
+ $dir = ($INSTALLING) ? "${InstLibDirGhc}/imports/${lib}"
+ : "${TopPwd}/ghc/lib/${lib}";
+ }
+ if (!$Include_prelude) {
+ push(@Ignore_dirs,$dir);
+ } else {
+ push(@Import_dirs, $dir);
+ }
+ }
+}
+
+
+
sub preprocess_import_dirs {
# it's probably cheaper to find out what's in all
# the @Import_dirs before we start processing.
local($follow_file,$read_from_file);
local($cleanup)=0;
+ local(@Old_Syslibs, $options);
+ local(@Old_Ignore_dirs);
+ local($found_options)=0;
+
local($last_seen_dir) = $orig_src_file;
$last_seen_dir =~ s/\/[^\/]+$//; # strip to dir name
$last_seen_dir = '.' if ($last_seen_dir eq $orig_src_file);
&process_dependency('import',0,'Prelude') if ($Include_prelude);
+ #
+ # Check for {-# OPTIONS in the file-to-be-processed. If any syslib related options
+ # *only* are found, add them to the module search list (and take them off once
+ # we're through with this module.)
+ #
+
+ $options = &check_for_source_options($file_to_read);
+ if ($options ne "") {
+ @Old_Syslibs=@Syslibs;
+ &mangle_command_line_args(split(/ /,$options));
+ if (@Old_Syslibs ne @Syslibs) {
+ $found_options=1;
+ @Old_Ignore_dirs = @Ignore_dirs;
+ &gather_import_dirs();
+ &preprocess_import_dirs();
+ }
+ }
+
# we mangle #include's so they will also leave something
# behind to indicate the dependency on _them_
next if $modname eq '';
&process_dependency($todo,$source,$modname);
}
+
+ @Ignore_dirs = @Old_Ignore_dirs if ($found_options);
+
close(SRCFILE) || exit(1);
# remove temporary file, if any.
if ($cleanup) {
exit $return_val;
}
}
+
+# out of the driver too.
+sub check_for_source_options {
+ local($file) = @_;
+ local($comment_start,$comment_end);
+
+ # Assume it is a file containing Haskell source
+ $comment_start = "{-#";
+ $comment_end = "#-}";
+
+ open(FILE,$file) || return ""; # No big loss
+
+ while (<FILE>) {
+ if ( /^${comment_start} OPTIONS (.*)${comment_end}/ ) {
+ # return the options.
+ local($stuff) = $1;
+ print STDERR "Found OPTIONS $stuff in $file\n" if $Verbose;
+ close(FILE);
+ return $stuff;
+ }
+ elsif ( /^$/ ) { # ignore empty lines
+ ;
+ }
+ elsif ( /^#line.+$/ ) { # ignore comment lines (unused..ToDo: rm )
+ ;
+ }
+ elsif ( /^{-# LINE.+$/ ) { # ignore line pragmas
+ ;
+ }
+ else { # stop looking, something non-empty / not
+ # ${comment_start} OPTIONS .. ${comment_end} encountered.
+ close(FILE);return "";
+ }
+ }
+ close(FILE);
+ return "";
+}
projects / ghc-hetmet.git / blobdiff