Skip these tests at stage1.

Note: apparently you cannot quote operands to `ifeq` in Makefile.

Author: pnkfelix

src/test/run-make/lto-syntax-extension/Makefile

@@ -1,6 +1,18 @@
 -include ../tools.mk
 
-all:
+# This test attempts to use syntax extensions, which are known to be
+# incompatible with stage1 at the moment.
+
+ifeq ($(RUST_BUILD_STAGE),1)
+DOTEST=
+else
+DOTEST=dotest
+endif
+
+all: $(DOTEST)
+
+dotest:
+	env
 	$(RUSTC) lib.rs
 	$(RUSTC) main.rs -Z lto
 	$(call RUN,main)

src/test/run-make/unicode-input/Makefile

@@ -1,9 +1,21 @@
 -include ../tools.mk
 
+# This test attempts to run rustc itself from the compiled binary; but
+# that means that you need to set the LD_LIBRARY_PATH for rustc itself
+# while running muliple_files, and that won't work for stage1.
+
 # FIXME ignore windows
 ifndef IS_WINDOWS
+ifeq ($(RUST_BUILD_STAGE),1)
+DOTEST=
+else
+DOTEST=dotest
+endif
+endif
+
+all: $(DOTEST)
 
-all:
+dotest:
 	# check that we don't ICE on unicode input, issue #11178
 	$(RUSTC) multiple_files.rs
 	$(call RUN,multiple_files)  "$(RUSTC)" "$(TMPDIR)"
@@ -12,8 +24,3 @@ all:
 	# correct length. issue #8706
 	$(RUSTC) span_length.rs
 	$(call RUN,span_length) "$(RUSTC)" "$(TMPDIR)"
-
-else
-all:
-
-endif