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-include ../tools.mk
# The following command will:
# 1. dump the symbols of a library using `nm`
# 2. extract only those lines that we are interested in via `grep`
# 3. from those lines, extract just the symbol name via `sed`, which:
# * always starts with "_ZN" and ends with "E" (`legacy` mangling)
# * always starts with "_R" (`v0` mangling)
# 4. sort those symbol names for deterministic comparison
# 5. write the result into a file
dump-symbols = nm "$(TMPDIR)/lib$(1).rlib" \
| grep -E "$(2)" \
| sed -E "s/.*(_ZN.*E|_R[a-zA-Z0-9_]*).*/\1/" \
| sort \
> "$(TMPDIR)/$(1)$(3).nm"
# This test
# - compiles each of the two crates 2 times and makes sure each time we get
# exactly the same symbol names
# - makes sure that both crates agree on the same symbol names for monomorphic
# functions
all:
$(RUSTC) stable-symbol-names1.rs
$(call dump-symbols,stable_symbol_names1,generic_|mono_,_v1)
rm $(TMPDIR)/libstable_symbol_names1.rlib
$(RUSTC) stable-symbol-names1.rs
$(call dump-symbols,stable_symbol_names1,generic_|mono_,_v2)
cmp "$(TMPDIR)/stable_symbol_names1_v1.nm" "$(TMPDIR)/stable_symbol_names1_v2.nm"
$(RUSTC) stable-symbol-names2.rs
$(call dump-symbols,stable_symbol_names2,generic_|mono_,_v1)
rm $(TMPDIR)/libstable_symbol_names2.rlib
$(RUSTC) stable-symbol-names2.rs
$(call dump-symbols,stable_symbol_names2,generic_|mono_,_v2)
cmp "$(TMPDIR)/stable_symbol_names2_v1.nm" "$(TMPDIR)/stable_symbol_names2_v2.nm"
$(call dump-symbols,stable_symbol_names1,mono_,_cross)
$(call dump-symbols,stable_symbol_names2,mono_,_cross)
cmp "$(TMPDIR)/stable_symbol_names1_cross.nm" "$(TMPDIR)/stable_symbol_names2_cross.nm"
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