From 88035b997930bd00c30be7b69de9d855a7f2322e Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 6 Feb 2018 03:19:42 +0000
Subject: mjit headers for universal binary

* common.mk (MJIT_HEADER, MJIT_MIN_HEADER): added hook to separate
  intermediate headers per archs.

* defs/gmake.mk: build mjit headers per -arch options, and then
  merge the headers with `#ifdef`s.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62245 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 defs/gmake.mk     | 22 +++++++++++++++++++++-
 defs/universal.mk |  5 +++++
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 defs/universal.mk

(limited to 'defs')

diff --git a/defs/gmake.mk b/defs/gmake.mk
index 3170b2755a..4c9eb473af 100644
--- a/defs/gmake.mk
+++ b/defs/gmake.mk
@@ -48,7 +48,7 @@ define archcmd
 %.i: %.$(1).i
 endef
 
-$(foreach arch,$(filter -arch=%,$(subst -arch ,-arch=,$(ARCH_FLAG))),\
+$(foreach arch,$(arch_flags),\
 	$(eval $(call archcmd,$(patsubst -arch=%,%,$(value arch)),$(patsubst -arch=%,-arch %,$(value arch)))))
 endif
 
@@ -144,3 +144,23 @@ commit: $(if $(filter commit,$(MAKECMDGOALS)),$(filter-out commit,$(MAKECMDGOALS
 ifeq ($(words $(filter update-gems extract-gems,$(MAKECMDGOALS))),2)
 extract-gems: update-gems
 endif
+
+ifeq ($(filter 0 1,$(words $(arch_flags))),)
+$(foreach x,$(patsubst -arch=%,%,$(arch_flags)), \
+	  $(eval $$(MJIT_HEADER:.h=)-$(value x).h \
+		 $$(MJIT_MIN_HEADER:.h=)-$(value x).h \
+		 : ARCH_FLAG := -arch $(value x)))
+
+mjit_min_headers := $(patsubst -arch=%,$(MJIT_MIN_HEADER:.h=-%.h),$(arch_flags))
+$(MJIT_MIN_HEADER): $(mjit_min_headers)
+	@ set -e; set $(patsubst -arch=%,%,$(arch_flags)); \
+	cd $(@D); h=$(@F:.h=); set -x; \
+	cp $$h-$$1.h $$h.h.new; shift; \
+	for arch; do \
+	  mv $$h.h.new $$h.h.tmp; \
+	  diff -B -D__$${arch}__ $$h.h.tmp $$h-$$arch.h > $$h.h.new || :; \
+	done
+	$(RM) $@.tmp
+	$(IFCHANGE) $@ $@.new
+
+endif
diff --git a/defs/universal.mk b/defs/universal.mk
new file mode 100644
index 0000000000..c34a31b356
--- /dev/null
+++ b/defs/universal.mk
@@ -0,0 +1,5 @@
+arch_flags := $(filter -arch=%,$(subst -arch ,-arch=,$(ARCH_FLAG)))
+ifeq ($(filter 0 1,$(words $(arch_flags))),)
+override MJIT_HEADER_SUFFIX = -%
+override MJIT_HEADER_ARCH = -$(word 2,$(ARCH_FLAG))
+endif
-- 
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