src/test/run-make-fulldeps/incr-add-rust-src-component/Makefile

   1 -include ../tools.mk
   2
   3 # rust-lang/rust#70924: Test that if we add rust-src component in between two
   4 # incremetnal compiles, the compiler does not ICE on the second.
   5
   6 # This test uses `ln -s` rather than copying to save testing time, but its
   7 # usage doesn't work on windows. So ignore windows.
   8
   9 # ignore-windows
  10
  11 SYSROOT:=$(shell $(RUSTC) --print sysroot)
  12 FAKEROOT=$(TMPDIR)/fakeroot
  13 INCR=$(TMPDIR)/incr
  14
  15 # Make a local copy of the sysroot; then remove the rust-src part of it, if
  16 # present, for the *first* build. Then put in a facsimile of the rust-src
  17 # component for the second build, in order to expose the ICE from issue #70924.
  18 #
  19 # Note that it is much easier to just do `cp -a $(SYSROOT)/* $(FAKEROOT)` as a
  20 # first step, but I am concerned that would be too expensive in a unit test
  21 # compared to making symbolic links.
  22 #
  23 # Anyway, the pattern you'll see here is: For every prefix in
  24 # root/lib/rustlib/src, link all of prefix parent content, then remove the
  25 # prefix, then loop on the next prefix. This way, we basically create a copy of
  26 # the context around root/lib/rustlib/src, and can freely add/remove the src
  27 # component itself.
  28 all:
  29         mkdir $(FAKEROOT)
  30         ln -s $(SYSROOT)/* $(FAKEROOT)
  31         rm -f $(FAKEROOT)/lib
  32         mkdir $(FAKEROOT)/lib
  33         ln -s $(SYSROOT)/lib/* $(FAKEROOT)/lib
  34         rm -f $(FAKEROOT)/lib/rustlib
  35         mkdir $(FAKEROOT)/lib/rustlib
  36         ln -s $(SYSROOT)/lib/rustlib/* $(FAKEROOT)/lib/rustlib
  37         rm -f $(FAKEROOT)/lib/rustlib/src
  38         mkdir $(FAKEROOT)/lib/rustlib/src
  39         ln -s $(SYSROOT)/lib/rustlib/src/* $(FAKEROOT)/lib/rustlib/src
  40         rm -f $(FAKEROOT)/lib/rustlib/src/rust
  41         $(RUSTC) --sysroot $(FAKEROOT) -C incremental=$(INCR) main.rs
  42         mkdir -p $(FAKEROOT)/lib/rustlib/src/rust/src/libstd
  43         touch $(FAKEROOT)/lib/rustlib/src/rust/src/libstd/lib.rs
  44         $(RUSTC) --sysroot $(FAKEROOT) -C incremental=$(INCR) main.rs