mrustc: init

This contains some extraordinarily ugly hacks for a set of even uglier
Makefiles.

Signed-off-by: Ophestra <cat@gensokyo.uk>

mrustc/package.az

@@ -1,3 +1,51 @@
+package mrustc-source {
+	description = "patched mrustc source tree";
+	exclude = true;
+
+	version# = "0.12.0";
+	output = remoteGitHub {
+		suffix = "thepowersgang/mrustc";
+		tag = "v"+version;
+		checksum = "Db25OAKL_1yZIF6MlXOTHhrEJ-Pd-i-accVtt5rJollmpKm6B3bgS0xN7hoC1cVu";
+	};
+	chmod = true;
+	patches = [
+		"0001-do-not-download-rustc.patch",
+		"0002-Revert-HIR-Typecheck-Optimise-by-doing-multiple-chec.patch",
+
+		"remove-git-invocations.patch",
+	];
+}
+
+package mrustc {
+	description = "alternative rust compiler (re-implementation)";
+	website = "https://github.com/thepowersgang/mrustc";
+	anitya = 391250;
+
+	source = mrustc-source;
+	enterSource = true;
+	writable = true;
+
+	minimal = true;
+	exec = make {
+		inPlace = true;
+		skipConfigure = true;
+		make = [ "CXX='g++ -w'" ];
+		// test suite runs during rustc-bootstrap
+		skipCheck = true;
+		install = "install -vD bin/mrustc /work/system/bin/mrustc";
+	};
+
+	inputs = [
+		bash,
+
+		// mrustc requires buggy gcc behaviour
+		gcc,
+	];
+
+	runtime = [ gcc ];
+}
+
 package rustc-bootstrap-source {
 	description = "rustc source tree used by mrustc";
 	exclude = true;
@@ -11,32 +59,20 @@ package rustc-bootstrap-source {
 	chmod = true;
 }
 
-package mrustc {
-	description = "alternative rust compiler (re-implementation)";
-	website = "https://github.com/thepowersgang/mrustc";
-	anitya = 391250;
+package rustc-bootstrap {
+	description = "rust toolchain bootstrapped via mrustc";
+	exclude = true;
 
-	version# = "0.12.0";
-	source = remoteGitHub {
-		suffix = "thepowersgang/mrustc";
-		tag = "v"+version;
-		checksum = "Db25OAKL_1yZIF6MlXOTHhrEJ-Pd-i-accVtt5rJollmpKm6B3bgS0xN7hoC1cVu";
-	};
-	patches = [
-		"0001-do-not-download-rustc.patch",
-		"0002-Revert-HIR-Typecheck-Optimise-by-doing-multiple-chec.patch",
-	];
+	source = mrustc-source;
 	extra = [ rustc-bootstrap-source ];
 
 	enterSource = true;
 	writable = true;
-	chmod = true;
 
 	exec = make {
 		inPlace = true;
 		skipConfigure = true;
 		preMake = `
-export CC=gcc CXX=g++
 export PARLEVEL=`+jobsE+`
 export RUSTC_SOURCE='../extra/rustc-bootstrap-source'
 export RUSTC_VERSION="$(cut -d ' ' -f 1 "$RUSTC_SOURCE/version")"
@@ -44,21 +80,26 @@ export MRUSTC_TARGET_VER="$(cut -d '.' -f 1,2 <<< "$RUSTC_VERSION")"
 export OUTDIR_SUF="-$RUSTC_VERSION"
 patch -d "$RUSTC_SOURCE" -p0 < "rustc-$RUSTC_VERSION-src.patch"
 touch "$RUSTC_SOURCE/dl-version"
-ln -s "$RUSTC_SOURCE" "rustc-$RUSTC_VERSION-src"
 
-sed -i 's/\$(shell git show --pretty=%H -s --no-show-signature)/unknown/' Makefile
-sed -i 's/\$(shell git show -s --pretty=%h --no-show-signature)/unknown/' Makefile
-sed -i 's/\$(shell git symbolic-ref -q --short HEAD || git describe --tags --exact-match)/v`+version+`/' Makefile
-sed -i 's/\$(shell git diff-index --quiet HEAD; echo $$?)/0/' Makefile
-sed -i 's/\$(shell env LC_TIME=C date -u +"%a, %e %b %Y %T +0000")/Thu,  1 Jan 1970 00:00:00 +0000/' Makefile
+ln -s "$RUSTC_SOURCE" "rustc-$RUSTC_VERSION-src"
+mkdir bin && ln -s /system/bin/mrustc bin/
 `;
-		preCheck = `
-make -f minicargo.mk LIBS
-make local_tests
-`;
-		check = [ "test" ];
+		make = [
+			"-f",
+			"minicargo.mk",
+			"CC=gcc",
+			"CXX='g++ -w'",
+			"LIBS",
+		];
+		check = [
+			"CC=gcc",
+			"CXX='g++ -w'",
+			"test",
+			"local_tests",
+		];
 
 		install = `
+export CC=gcc CXX=g++
 OUTDIR="output-$RUSTC_VERSION"
 make -f minicargo.mk "$OUTDIR/rustc"
 make -f minicargo.mk "$OUTDIR/cargo"
@@ -73,9 +114,7 @@ make -C run_rustc
 		pkg-config,
 		perl,
 		python,
-
-		// mrustc requires buggy gcc behaviour
-		gcc,
+		mrustc,
 
 		kernel-headers,
 	];

mrustc/remove-git-invocations.patch

@@ -0,0 +1,13 @@
+diff --git a/Makefile b/Makefile
+index 4317d2c0..415427b4 100644
+--- a/Makefile
++++ b/Makefile
+@@ -187,7 +187,7 @@ $(OBJDIR)%.o: src/%.cpp
+ $(OBJDIR)version.o: $(OBJDIR)%.o: src/%.cpp $(filter-out $(OBJDIR)version.o,$(OBJ)) Makefile
+ 	@+mkdir -p $(dir $@)
+ 	@echo [CXX] -o $@
+-	$V$(CXX) -o $@ -c $< $(CXXFLAGS) $(CPPFLAGS) -MMD -MP -MF $@.dep -D VERSION_GIT_FULLHASH=\"$(shell git show --pretty=%H -s --no-show-signature)\" -D VERSION_GIT_BRANCH="\"$(shell git symbolic-ref -q --short HEAD || git describe --tags --exact-match)\"" -D VERSION_GIT_SHORTHASH=\"$(shell git show -s --pretty=%h --no-show-signature)\" -D VERSION_BUILDTIME="\"$(shell env LC_TIME=C date -u +"%a, %e %b %Y %T +0000")\"" -D VERSION_GIT_ISDIRTY=$(shell git diff-index --quiet HEAD; echo $$?)
++	$V$(CXX) -o $@ -c $< $(CXXFLAGS) $(CPPFLAGS) -MMD -MP -MF $@.dep -D VERSION_GIT_FULLHASH=\"unknown\" -D VERSION_GIT_BRANCH="\"v0.12.0\"" -D VERSION_GIT_SHORTHASH=\"unknown\" -D VERSION_BUILDTIME="\"Thu,  1 Jan 1970 00:00:00 +0000\"" -D VERSION_GIT_ISDIRTY=0
+ 
+ src/main.cpp: $(PCHS:%=src/%.gch)
+