src/test/run-make/stable-symbol-names/Makefile

   1 -include ../tools.mk
   2
   3 # The following command will:
   4 #  1. dump the symbols of a library using `nm`
   5 #  2. extract only those lines that we are interested in via `grep`
   6 #  3. from those lines, extract just the symbol name via `sed`
   7 #     (symbol names always start with "_ZN" and end with "E")
   8 #  4. sort those symbol names for deterministic comparison
   9 #  5. write the result into a file
  10
  11 dump-symbols = nm "$(TMPDIR)/lib$(1).rlib" \
  12              | grep -E "$(2)" \
  13              | sed "s/.*\(_ZN.*E\).*/\1/" \
  14              | sort \
  15              > "$(TMPDIR)/$(1)$(3).nm"
  16
  17 # This test
  18 # - compiles each of the two crates 2 times and makes sure each time we get
  19 #   exactly the same symbol names
  20 # - makes sure that both crates agree on the same symbol names for monomorphic
  21 #   functions
  22
  23 all:
  24         $(RUSTC) stable-symbol-names1.rs
  25         $(call dump-symbols,stable_symbol_names1,generic_|mono_,_v1)
  26         rm $(TMPDIR)/libstable_symbol_names1.rlib
  27         $(RUSTC) stable-symbol-names1.rs
  28         $(call dump-symbols,stable_symbol_names1,generic_|mono_,_v2)
  29         cmp "$(TMPDIR)/stable_symbol_names1_v1.nm" "$(TMPDIR)/stable_symbol_names1_v2.nm"
  30
  31         $(RUSTC) stable-symbol-names2.rs
  32         $(call dump-symbols,stable_symbol_names2,generic_|mono_,_v1)
  33         rm $(TMPDIR)/libstable_symbol_names2.rlib
  34         $(RUSTC) stable-symbol-names2.rs
  35         $(call dump-symbols,stable_symbol_names2,generic_|mono_,_v2)
  36         cmp "$(TMPDIR)/stable_symbol_names2_v1.nm" "$(TMPDIR)/stable_symbol_names2_v2.nm"
  37
  38         $(call dump-symbols,stable_symbol_names1,mono_,_cross)
  39         $(call dump-symbols,stable_symbol_names2,mono_,_cross)
  40         cmp "$(TMPDIR)/stable_symbol_names1_cross.nm" "$(TMPDIR)/stable_symbol_names2_cross.nm"