checkabi/storeabi relevant only to x86_64

The stored ABI files are for the x86_64 architecture.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes openzfs#11345
Closes openzfs#13104

Makefile.am

@@ -138,20 +138,10 @@ SHELLCHECKSCRIPTS = autogen.sh
 
 PHONY += checkabi storeabi
 
-checklibabiversion:
-	libabiversion=`abidw -v | $(SED) 's/[^0-9]//g'`; \
-	if test $$libabiversion -lt "200"; then \
-        /bin/echo -e "\n" \
-        "*** Please use libabigail 2.0.0 version or newer;\n" \
-        "*** otherwise results are not consistent!\n" \
-        "(or see https://github.com/openzfs/libabigail-docker )\n"; \
-        exit 1; \
-    fi;
-
-checkabi: checklibabiversion lib
+checkabi: lib
 	$(MAKE) -C lib checkabi
 
-storeabi: checklibabiversion lib
+storeabi: lib
 	$(MAKE) -C lib storeabi
 
 PHONY += mancheck

config/Abigail.am

@@ -12,17 +12,32 @@
 # a mechanism for suppressing harmless warnings.
 #
 
-PHONY += checkabi storeabi
+PHONY += checkabi storeabi check_libabi_version allow_libabi_only_for_x86_64
 
-checkabi:
+check_libabi_version:
+	libabiversion=`abidw -v | $(SED) 's/[^0-9]//g'`; \
+	if test $$libabiversion -lt "200"; then \
+		/bin/echo -e "\n" \
+		    "*** Please use libabigail 2.0.0 version or newer;\n" \
+		    "*** otherwise results are not consistent!\n" \
+		    "(or see https://github.com/openzfs/libabigail-docker )\n"; \
+		exit 1; \
+	fi;
+
+allow_libabi_only_for_x86_64:
+	echo '*** ABI definitions provided apply only to x86_64 architecture'
+	echo '*** Skipping `checkabi`/`storeabi` target and assuming success.'
+
+if TARGET_CPU_X86_64
+checkabi: check_libabi_version
 	for lib in $(lib_LTLIBRARIES) ; do \
 		abidiff --no-unreferenced-symbols \
 		    --headers-dir1 ../../include \
 		    --suppressions $${lib%.la}.suppr \
 		    $${lib%.la}.abi .libs/$${lib%.la}.so ; \
 	done
 
-storeabi:
+storeabi: check_libabi_version
 	cd .libs ; \
 	for lib in $(lib_LTLIBRARIES) ; do \
 		abidw --no-show-locs \
@@ -31,3 +46,7 @@ storeabi:
 		--type-id-style hash \
 		$${lib%.la}.so > ../$${lib%.la}.abi ; \
 	done
+else
+checkabi: allow_libabi_only_for_x86_64
+storeabi: allow_libabi_only_for_x86_64
+endif