2 files changed, 39 insertions, 0 deletions
diff --git a/debian/rules.d/tools/objtool/Makefile b/debian/rules.d/tools/objtool/Makefile
new file mode 100644
index 000000000..8666355f6
--- /dev/null
+++ b/debian/rules.d/tools/objtool/Makefile
@@ -0,0 +1,18 @@
+PROGS = \
+	objtool \
+	objtool.real-powerpc \
+	objtool.real-x86
+
+include $(top_rulesdir)/Makefile.inc
+
+objtool.real-%:
+	mkdir -p $*
+# objtool always uses HOSTCC, HOSTLD, and HOSTAR; we need to override
+# these on the command line to make cross-builds work.  But it also
+# builds fixdep which still needs to be native in a cross-build.  Set
+# REALHOSTCC and REALHOSTLD variables which will be used for fixdep.
+	$(MAKE) -C $(top_srcdir)/tools/objtool O=$(CURDIR)/$* HOSTARCH=$(KERNEL_ARCH) ARCH=$* HOSTCC=$(CC) HOSTLD=$(CROSS_COMPILE)ld HOSTAR=$(CROSS_COMPILE)ar REALHOSTCC=gcc REALHOSTLD=ld V=1 EXTRA_CFLAGS='$(CFLAGS) $(CPPFLAGS)'
+	ln -f $*/objtool $@
+
+%: %.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
diff --git a/debian/rules.d/tools/objtool/objtool.c b/debian/rules.d/tools/objtool/objtool.c
new file mode 100644
index 000000000..beb42c631
--- /dev/null
+++ b/debian/rules.d/tools/objtool/objtool.c
@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main(int argc, char **argv)
+{
+	const char *arch;
+	char prog[1024];
+
+	arch = getenv("SRCARCH");
+	if (!arch) {
+		fprintf(stderr, "objtool: SRCARCH variable not defined\n");
+		return 2;
+	}
+
+	snprintf(prog, sizeof(prog), "%s.real-%s", argv[0], arch);
+	execv(prog, argv);
+
+	fprintf(stderr, "objtool: Failed to execute %s\n", prog);
+	return 1;
+}