include ../tools.mk # rust-lang/rust#70924: Test that if we add rust-src component in between two # incremental compiles, the compiler does not ICE on the second. # This test uses `ln -s` rather than copying to save testing time, but its # usage doesn't work on windows. So ignore windows. # ignore-windows SYSROOT:=$(shell $(RUSTC) --print sysroot) FAKEROOT=$(TMPDIR)/fakeroot INCR=$(TMPDIR)/incr # Make a local copy of the sysroot; then remove the rust-src part of it, if # present, for the *first* build. Then put in a facsimile of the rust-src # component for the second build, in order to expose the ICE from issue #70924. # # Note that it is much easier to just do `cp -a $(SYSROOT)/* $(FAKEROOT)` as a # first step, but I am concerned that would be too expensive in a unit test # compared to making symbolic links. # # Anyway, the pattern you'll see here is: For every prefix in # root/lib/rustlib/src, link all of prefix parent content, then remove the # prefix, then loop on the next prefix. This way, we basically create a copy of # the context around root/lib/rustlib/src, and can freely add/remove the src # component itself. all: mkdir $(FAKEROOT) ln -s $(SYSROOT)/* $(FAKEROOT) rm -f $(FAKEROOT)/lib mkdir $(FAKEROOT)/lib ln -s $(SYSROOT)/lib/* $(FAKEROOT)/lib rm -f $(FAKEROOT)/lib/rustlib mkdir $(FAKEROOT)/lib/rustlib ln -s $(SYSROOT)/lib/rustlib/* $(FAKEROOT)/lib/rustlib rm -f $(FAKEROOT)/lib/rustlib/src mkdir $(FAKEROOT)/lib/rustlib/src ln -s $(SYSROOT)/lib/rustlib/src/* $(FAKEROOT)/lib/rustlib/src rm -f $(FAKEROOT)/lib/rustlib/src/rust $(RUSTC) --sysroot $(FAKEROOT) -C incremental=$(INCR) main.rs mkdir -p $(FAKEROOT)/lib/rustlib/src/rust/src/libstd touch $(FAKEROOT)/lib/rustlib/src/rust/src/libstd/lib.rs $(RUSTC) --sysroot $(FAKEROOT) -C incremental=$(INCR) main.rs