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