From 78b95b49f8715a4782f5b9bdc4c163e445cdc303 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 22 Jan 2017 12:50:36 +0000
Subject: [PATCH] template/extinit.c.tmpl

* template/extinit.c.tmpl: separate from ext/extmk.rb.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57395 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 common.mk               |  4 ++++
 ext/extmk.rb            | 25 ++++---------------------
 template/extinit.c.tmpl | 16 ++++++++++++++++
 3 files changed, 24 insertions(+), 21 deletions(-)
 create mode 100644 template/extinit.c.tmpl

diff --git a/common.mk b/common.mk
index 3f4bcf6c3a..9db6a3d032 100644
--- a/common.mk
+++ b/common.mk
@@ -220,6 +220,10 @@ build-ext: $(EXTS_MK)
 	$(Q)$(MAKE) -f $(EXTS_MK) $(MFLAGS) libdir="$(libdir)" LIBRUBY_EXTS=$(LIBRUBY_EXTS) \
 	    EXTENCS="$(ENCOBJS)" UPDATE_LIBRARIES=no $(EXTSTATIC)
 
+ext/extinit.c: $(srcdir)/template/extinit.c.tmpl
+	$(Q)$(MINIRUBY) $(srcdir)/tool/generic_erb.rb -o $@ -c \
+	    $(srcdir)/template/extinit.c.tmpl $(EXTINITS)
+
 prog: program wprogram
 
 $(PREP): $(MKFILES)
diff --git a/ext/extmk.rb b/ext/extmk.rb
index dc6bd04945..486712af47 100755
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -11,7 +11,6 @@ $destdir = nil
 $dryrun = false
 $clean = nil
 $nodynamic = nil
-$extinit = nil
 $extobjs = []
 $extflags = ""
 $extlibs = nil
@@ -642,13 +641,12 @@ if $ignore
   exit
 end
 
-$extinit ||= ""
 $extobjs ||= []
 $extpath ||= []
 $extflags ||= ""
 $extlibs ||= []
+extinits = {}
 unless $extlist.empty?
-  $extinit << "\n" unless $extinit.empty?
   list = $extlist.dup
   built = []
   while e = list.shift
@@ -662,27 +660,11 @@ unless $extlist.empty?
       next
     end
     base = File.basename(feature)
-    $extinit << "    init(Init_#{base}, \"#{feature}.so\");\n"
+    extinits[base] = feature
     $extobjs << format("ext/%s/%s.%s", target, base, $LIBEXT)
     built << target
   end
 
-  src = %{\
-#include "ruby/ruby.h"
-
-#define init(func, name) {	\\
-    extern void func(void);	\\
-    ruby_init_ext(name, func);	\\
-}
-
-void ruby_init_ext(const char *name, void (*init)(void));
-
-void Init_ext(void)\n{\n#$extinit}
-}
-  if !modified?(extinit.c, MTIMES) || IO.read(extinit.c) != src
-    open(extinit.c, "w") {|fe| fe.print src}
-  end
-
   $extpath.delete("$(topdir)")
   $extflags = libpathflag($extpath) << " " << $extflags.strip
   conf = [
@@ -749,6 +731,7 @@ if $configure_only and $command_output
     mf.macro "EXTLIBS", $extlibs
     mf.macro "EXTSO", extso
     mf.macro "EXTLDFLAGS", $extflags.split
+    mf.macro "EXTINITS", extinits.map {|k, v| "#{k},#{v}"}
     submakeopts = []
     if enable_config("shared", $enable_shared)
       submakeopts << 'DLDOBJS="$(EXTOBJS) $(EXTENCS)"'
@@ -785,7 +768,7 @@ if $configure_only and $command_output
       mf.puts "#{tgt}:\n\t#{submake} $@"
     end
     mf.puts "libencs:\n\t$(Q)$(MAKE) -f enc.mk V=$(V) $@"
-    mf.puts "ext/extinit.#{$OBJEXT}:\n\t$(Q)$(MAKE) $(MFLAGS) V=$(V) $@" if $static
+    mf.puts "ext/extinit.#{$OBJEXT}:\n\t$(Q)$(MAKE) $(MFLAGS) V=$(V) EXTINITS=\"$(EXTINITS)\" $@" if $static
     mf.puts
     if $gnumake == "yes"
       submake = "$(MAKE) -C $(@D)"
diff --git a/template/extinit.c.tmpl b/template/extinit.c.tmpl
new file mode 100644
index 0000000000..592eb0452f
--- /dev/null
+++ b/template/extinit.c.tmpl
@@ -0,0 +1,16 @@
+%# -*- C -*-
+#include "ruby/ruby.h"
+
+#define init(func, name) {	\
+    extern void func(void);	\
+    ruby_init_ext(name, func);	\
+}
+
+void ruby_init_ext(const char *name, void (*init)(void));
+
+void Init_ext(void)
+{
+% ARGV.each do |n|
+    init(Init_<%=n.sub(/,(.*)/, ', "\1.so"')%>);
+% end
+}