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-rw-r--r--Makerules32
1 files changed, 32 insertions, 0 deletions
diff --git a/Makerules b/Makerules
index b7e556f..b46b09b 100644
--- a/Makerules
+++ b/Makerules
@@ -1175,6 +1175,14 @@ ifeq ($(build-shared),yes)
LC_ALL=C $(OBJDUMP) --dynamic-syms $< > $@T
mv -f $@T $@
+# A sysdeps/.../Makefile can set abilist-pattern to something like
+# %-foo.abilist to look for libc-foo.abilist instead of libc.abilist.
+# This makes sense if multiple ABIs can be most cleanly supported by a
+# configuration without using separate sysdeps directories for each.
+ifdef abilist-pattern
+vpath $(abilist-pattern) $(+sysdep_dirs)
+endif
+
vpath %.abilist $(+sysdep_dirs)
# The .PRECIOUS rule prevents the files built by an implicit rule whose
@@ -1184,18 +1192,42 @@ vpath %.abilist $(+sysdep_dirs)
.PRECIOUS: %.symlist
generated += $(extra-libs:=.symlist)
+ifdef abilist-pattern
+check-abi-%: $(common-objpfx)config.make $(abilist-pattern) $(objpfx)%.symlist
+ $(check-abi-pattern)
+check-abi-%: $(common-objpfx)config.make $(abilist-pattern) \
+ $(common-objpfx)%.symlist
+ $(check-abi-pattern)
+endif
check-abi-%: $(common-objpfx)config.make %.abilist $(objpfx)%.symlist
$(check-abi)
check-abi-%: $(common-objpfx)config.make %.abilist $(common-objpfx)%.symlist
$(check-abi)
+define check-abi-pattern
+ diff -p -U 0 $(filter $(abilist-pattern),$^) $(filter %.symlist,$^)
+endef
define check-abi
diff -p -U 0 $(filter %.abilist,$^) $(filter %.symlist,$^)
endef
+ifdef abilist-pattern
+update-abi-%: $(objpfx)%.symlist $(abilist-pattern)
+ $(update-abi-pattern)
+update-abi-%: $(common-objpfx)%.symlist $(abilist-pattern)
+ $(update-abi-pattern)
+endif
update-abi-%: $(objpfx)%.symlist %.abilist
$(update-abi)
update-abi-%: $(common-objpfx)%.symlist %.abilist
$(update-abi)
+define update-abi-pattern
+@if cmp -s $^ 2> /dev/null; \
+ then \
+ echo '+++ $(filter $(abilist-pattern),$^) is unchanged'; \
+ else cp -f $^; \
+ echo '*** Now check $(filter $(abilist-pattern),$^) changes for correctness ***'; \
+ fi
+endef
define update-abi
@if cmp -s $^ 2> /dev/null; \
then \