src/test/run-make-fulldeps/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`, which:
   7 #    * always starts with "_ZN" and ends with "E" (`legacy` mangling)
   8 #    * always starts with "_R" (`v0` mangling)
   9 #  4. sort those symbol names for deterministic comparison
  10 #  5. write the result into a file
  11
  12 dump-symbols = nm "$(TMPDIR)/lib$(1).rlib" \
  13              | grep -E "$(2)" \
  14              | sed -E "s/.*(_ZN.*E|_R[a-zA-Z0-9_]*).*/\1/" \
  15              | sort \
  16              > "$(TMPDIR)/$(1)$(3).nm"
  17
  18 # This test
  19 # - compiles each of the two crates 2 times and makes sure each time we get
  20 #   exactly the same symbol names
  21 # - makes sure that both crates agree on the same symbol names for monomorphic
  22 #   functions
  23
  24 all:
  25         $(RUSTC) stable-symbol-names1.rs
  26         $(call dump-symbols,stable_symbol_names1,generic_|mono_,_v1)
  27         rm $(TMPDIR)/libstable_symbol_names1.rlib
  28         $(RUSTC) stable-symbol-names1.rs
  29         $(call dump-symbols,stable_symbol_names1,generic_|mono_,_v2)
  30         cmp "$(TMPDIR)/stable_symbol_names1_v1.nm" "$(TMPDIR)/stable_symbol_names1_v2.nm"
  31
  32         $(RUSTC) stable-symbol-names2.rs
  33         $(call dump-symbols,stable_symbol_names2,generic_|mono_,_v1)
  34         rm $(TMPDIR)/libstable_symbol_names2.rlib
  35         $(RUSTC) stable-symbol-names2.rs
  36         $(call dump-symbols,stable_symbol_names2,generic_|mono_,_v2)
  37         cmp "$(TMPDIR)/stable_symbol_names2_v1.nm" "$(TMPDIR)/stable_symbol_names2_v2.nm"
  38
  39         $(call dump-symbols,stable_symbol_names1,mono_,_cross)
  40         $(call dump-symbols,stable_symbol_names2,mono_,_cross)
  41         cmp "$(TMPDIR)/stable_symbol_names1_cross.nm" "$(TMPDIR)/stable_symbol_names2_cross.nm"