Add error checking to boot-pkgs script

diff --git a/boot-pkgs b/boot-pkgs
index 9dc8f4a..677ae52 100644 (file)
--- a/boot-pkgs
+++ b/boot-pkgs
@@ -34,11 +34,14 @@ for $tarball (@tarballs) {
                 &rmtree("libraries/$package")
                     or die "Can't remove libraries/$package: $!";
             }
-            mkdir "libraries/$package";
+            mkdir "libraries/$package"
+                or die "Can't create libraries/$package: $!";
             system ("sh", "-c", "cd 'libraries/$package' && { cat ../../$tarball | gzip -d | tar xf - ; } && mv */* .") == 0
                 or die "Failed to unpack $package";
-            open STAMP, "> $stamp";
-            close STAMP;
+            open STAMP, "> $stamp"
+                or die "Failed to open stamp file: $!";
+            close STAMP
+                or die "Failed to close stamp file: $!";
         }
     }
 }
@@ -47,7 +50,8 @@ for $package (glob "libraries/*/") {
     $package =~ s/\/$//;
     my $pkgs = "$package/ghc-packages";
     if (-f $pkgs) {
-        open PKGS, "< $pkgs";
+        open PKGS, "< $pkgs"
+            or die "Failed to open $pkgs: $!";
         while (<PKGS>) {
             chomp;
             if (/.+/) {
@@ -76,9 +80,11 @@ for $package (@library_dirs) {
             $pkg =~ s#.*/##;
             $pkg =~ s/\.cabal$//;
             if (-f "$package/ghc-stage") {
-                open STAGE, "< $package/ghc-stage";
+                open STAGE, "< $package/ghc-stage"
+                    or die "Can't open $package/ghc-stage: $!";
                 $stage = int(<STAGE>);
-                close STAGE;
+                close STAGE
+                    or die "Failed closing $package/ghc-stage: $!";
             }
             else {
                 $stage = 1;
@@ -87,19 +93,23 @@ for $package (@library_dirs) {
             $top =~ s#[^/]+#..#g;
 
             print "Creating $package/ghc.mk\n";
-            open GHCMK, "> $package/ghc.mk";
+            open GHCMK, "> $package/ghc.mk"
+                or die "Opening $package/ghc.mk failed: $!";
             print GHCMK "${package}_PACKAGE = ${pkg}\n";
             print GHCMK "${package}_dist-install_GROUP = libraries\n";
             print GHCMK "\$(eval \$(call build-package,${package},dist-install,${stage}))\n";
-            close GHCMK;
+            close GHCMK
+                or die "Closing $package/ghc.mk failed: $!";
 
             print "Creating $package/GNUmakefile\n";
-            open GNUMAKEFILE, "> $package/GNUmakefile";
+            open GNUMAKEFILE, "> $package/GNUmakefile"
+                or die "Opening $package/GNUmakefile failed: $!";
             print GNUMAKEFILE "dir = ${package}\n";
             print GNUMAKEFILE "TOP = ${top}\n";
             print GNUMAKEFILE "include \$(TOP)/mk/sub-makefile.mk\n";
             print GNUMAKEFILE "FAST_MAKE_OPTS += stage=0\n";
-            close GNUMAKEFILE;
+            close GNUMAKEFILE
+                or die "Closing $package/GNUmakefile failed: $!";
         }
     }
 }