[ruby-dev:8817] Cross Compiling Ruby

わたなべです.

年越し make で cygwin のクロス環境を Linux 上に久し振りに作りました.
作ったからには Ruby も make したくなるわけで対応してみました.
基本的には
  o configure.in の host_ を target_ に置換
  o AC_CANONICAL_TARGET の追加
  o miniruby を native の ruby -rprep で代用.
    prep.rb は PLATFORM=RUBY_PLATFORM="@arch@"
  o とりあえず cygwin にだけ対応させた
と, こんな感じです.

問題もあって, AC_FUNC_GETPGRP, AC_FUNC_SETPGRP はクロス環境
に対応してないから, あらかじめ config.cache 等を使い
ac_cv_func_getpgrp_void=yes
ac_cv_func_setpgrp_void=yes
とかしておく必要があるとか, prep.rb はいくらなんでもまずそう
とか,
% env CFLAGS=-O2 CC=i586-cygwin32-gcc AR=i586-cygwin32-ar
RANLIB=i586-cygwin32-ranlib LDSHARED='i586-cygwin32-dllwrap
--as=i586-cygwin32-as --dlltool-name=i586-cygwin32-dlltool
--driver-name=i586-cygwin32-gcc --export-all -s'
NM=i586-cygwin32-nm ./configure --target=i386-cygwin --enable-shared
と, ものすごい configure になるとか(これ全部で一行ね), いろいろ.
＃gcc の TARGET_FOR_AR みたいにすべきなのか.

そろそろ配布の *.rb の PLATFORM はすべて RUBY_PLATFORM に
置換したほうがいいかも.

＃あーとうとう KCODE を指摘されちゃったか.

-- 
わたなべひろふみ

diff -u1r ruby-1.5.0/ChangeLog cross-ruby-1.5.0/ChangeLog
--- ruby-1.5.0/ChangeLog	Wed Dec 15 00:12:36 1999
+++ cross-ruby-1.5.0/ChangeLog	Tue Jan  4 06:14:41 2000
@@ -1 +1,11 @@
+Tue Jan  4 06:04:14 2000  WATANABE Hirofumi  <[e-mail]>
+
+	* configure.in: modify for cross-compiling.
+	  use target_* instead of host_*. 
+	  use AC_CANONICAL_TARGET.
+
+	* Makefile.in: ditto.
+
+	* cygwin/GNUmakefile.in: ditto.
+
 Mon Dec 13 15:15:31 1999  Yukihiro Matsumoto  <[e-mail]>
diff -u1r ruby-1.5.0/Makefile.in cross-ruby-1.5.0/Makefile.in
--- ruby-1.5.0/Makefile.in	Mon Nov  8 12:56:59 1999
+++ cross-ruby-1.5.0/Makefile.in	Tue Jan  4 02:50:28 2000
@@ -83,4 +83,4 @@
 
-all:		miniruby$(EXEEXT) rbconfig.rb
-		@./miniruby$(EXEEXT) -Xext extmk.rb @EXTSTATIC@
+all:		miniruby$(EXEEXT) @PREP@ rbconfig.rb
+		@@MINIRUBY@ -Xext extmk.rb @EXTSTATIC@
 
@@ -100,3 +100,3 @@
 		$(LDSHARED) $(DLDFLAGS) $(SOLIBS) $(OBJS) dmyext.@OBJEXT@ -o $@
-		@-./miniruby -e 'ARGV.each{|link| File.delete link if File.exist? link; \
+		@-@MINIRUBY@ -e 'ARGV.each{|link| File.delete link if File.exist? link; \
 						  File.symlink "$(LIBRUBY_SO)", link}' \
@@ -105,3 +105,3 @@
 install:	rbconfig.rb
-		./miniruby$(EXEEXT) $(srcdir)/instruby.rb $(DESTDIR)
+		@MINIRUBY@ $(srcdir)/instruby.rb $(DESTDIR)
 
@@ -109,3 +109,3 @@
 		@rm -f ext/extinit.c ext/extinit.@OBJEXT@ dmyext.@OBJEXT@
-		@-./miniruby$(EXEEXT) -Xext extmk.rb clean 2> /dev/null || true
+		@-@MINIRUBY@ -Xext extmk.rb clean 2> /dev/null || true
 		@rm -f $(PROGRAM) miniruby$(EXEEXT)
@@ -125,3 +125,6 @@
 rbconfig.rb:	miniruby$(EXEEXT)
-		@./miniruby$(EXEEXT) $(srcdir)/mkconfig.rb rbconfig.rb
+		@@MINIRUBY@ $(srcdir)/mkconfig.rb rbconfig.rb
+
+prep.rb:	miniruby$(EXEEXT)
+		@echo 'PLATFORM=RUBY_PLATFORM="@arch@"' > $@
 
diff -u1r ruby-1.5.0/configure.in cross-ruby-1.5.0/configure.in
--- ruby-1.5.0/configure.in	Wed Dec 15 00:12:37 1999
+++ cross-ruby-1.5.0/configure.in	Tue Jan  4 02:33:39 2000
@@ -28,2 +28,3 @@
 AC_CANONICAL_HOST
+AC_CANONICAL_TARGET
 
@@ -38,3 +39,3 @@
 
-    case "$host_os" in
+    case "$target_os" in
     rhapsody*)
@@ -138,3 +139,3 @@
 dnl Checks for libraries.
-case "$host_os" in
+case "$target_os" in
 nextstep*)	;;
@@ -328,3 +329,3 @@
 
-case "$host_os" in
+case "$target_os" in
     linux*)
@@ -353,3 +354,3 @@
     with_dln_a_out=yes
-    host_os=${host_os}-a_out
+    target_os=${target_os}-a_out
   else
@@ -372,3 +373,3 @@
   if test "$GCC" = yes; then
-    case "$host_os" in
+    case "$target_os" in
     nextstep*)	;;
@@ -380,3 +381,3 @@
     netbsd*) CCDLFLAGS=-fpic
-     case "$host_cpu" in
+     case "$target_cpu" in
      mips*) CCDLFLAGS=-fPIC ;;
@@ -387,3 +388,3 @@
   else
-    case "$host_os" in
+    case "$target_os" in
 	hpux*)		CCDLFLAGS='+z';;
@@ -396,3 +397,3 @@
 
-  case "$host_os" in
+  case "$target_os" in
 	hpux*)		DLDFLAGS="-E"
@@ -431,3 +432,3 @@
 	netbsd*)  	LDSHARED="ld -shared"
-                      	case "$host_cpu" in
+                      	case "$target_cpu" in
                       	alpha)
@@ -466,3 +467,3 @@
 			rb_cv_dlopen=yes ;;
-	beos*) 		case "$host_cpu" in
+	beos*) 		case "$target_cpu" in
 			  powerpc*)
@@ -479,3 +480,3 @@
 			rb_cv_dlopen=yes ;;
-	cygwin*)	LDSHARED='dllwrap --export-all -s'
+	cygwin*)	: ${LDSHARED='dllwrap --export-all -s'}
 			rb_cv_dlopen=yes ;;
@@ -515,3 +516,3 @@
 else
-  case "$host_os" in
+  case "$target_os" in
     hpux*)	DLEXT=sl
@@ -540,3 +541,3 @@
 
-case "$host_os" in
+case "$target_os" in
   linux*)
@@ -561,3 +562,3 @@
 
-case "$host_os" in
+case "$target_os" in
   human*)
@@ -632,2 +633,12 @@
 
+if test x"$cross_compiling" = xyes; then
+  MINIRUBY='ruby -I.. -rprep'
+  PREP=prep.rb
+else
+  MINIRUBY='./miniruby$(EXEEXT)'
+  PREP=''
+fi
+AC_SUBST(MINIRUBY)
+AC_SUBST(PREP)
+
 LIBRUBY_A='lib$(RUBY_INSTALL_NAME).a'
@@ -636,3 +647,3 @@
 SOLIBS=
-if test "$host_os" = "beos"; then
+if test "$target_os" = "beos"; then
   LIBRUBY='$(LIBRUBY_SO)'
@@ -641,3 +652,3 @@
   echo creating ruby.def
-  case "$host_cpu" in
+  case "$target_cpu" in
     powerpc*)
@@ -668,3 +679,3 @@
   CFLAGS="$CFLAGS $CCDLFLAGS"
-  case "$host_os" in
+  case "$target_os" in
     sunos4*)
@@ -685,3 +696,3 @@
 	LIBRUBY_SO='lib$(RUBY_INSTALL_NAME).so.$(MAJOR).$(MINOR)'
- 	case "$host_cpu" in
+ 	case "$target_cpu" in
 	alpha|mipsel|mipseb|powerpc|sparc64)  # ELF platforms
@@ -718,2 +729,6 @@
 	CCDLFLAGS=-DUSEIMPORTLIB
+	: ${NM=nm}
+	AC_SUBST(NM)
+        : ${DLLWRAP=dllwrap}
+	AC_SUBST(DLLWRAP)
 	    ;;
@@ -724,3 +739,3 @@
 
-case "$host_os" in
+case "$target_os" in
 	nextstep*)
@@ -767,12 +782,12 @@
 if test "$fat_binary" = yes ; then
-    arch="fat-${host_os}"
+    arch="fat-${target_os}"
 
     AC_DEFINE_UNQUOTED(RUBY_THIN_ARCHLIB,
-                 "${RUBY_LIB_PATH}/" __ARCHITECTURE__ "-${host_os}")
+                 "${RUBY_LIB_PATH}/" __ARCHITECTURE__ "-${target_os}")
 
     AC_DEFINE_UNQUOTED(RUBY_SITE_THIN_ARCHLIB,
-                 "${RUBY_SITE_LIB_PATH}/" __ARCHITECTURE__ "-${host_os}")
-    AC_DEFINE_UNQUOTED(RUBY_PLATFORM, __ARCHITECTURE__ "-${host_os}")
+                 "${RUBY_SITE_LIB_PATH}/" __ARCHITECTURE__ "-${target_os}")
+    AC_DEFINE_UNQUOTED(RUBY_PLATFORM, __ARCHITECTURE__ "-${target_os}")
 else
-    arch="${host_cpu}-${host_os}"
+    arch="${target_cpu}-${target_os}"
     AC_DEFINE_UNQUOTED(RUBY_PLATFORM, "${arch}")
diff -u1r ruby-1.5.0/cygwin/GNUmakefile.in cross-ruby-1.5.0/cygwin/GNUmakefile.in
--- ruby-1.5.0/cygwin/GNUmakefile.in	Fri Aug 13 14:45:15 1999
+++ cross-ruby-1.5.0/cygwin/GNUmakefile.in	Tue Jan  4 02:25:11 2000
@@ -7,3 +7,3 @@
 $(RUBYCWDLL): $(OBJS) dmyext.o
-	dllwrap -o $(RUBYCWDLL) --export-all --output-lib=$(LIBRUBY_SO) --dllname=$(RUBYCWDLL) -Wl,-e,__cygwin_noncygwin_dll_entry@12 --add-stdcall-alias -s $(OBJS) dmyext.o
-	nm --extern-only $(OBJS) dmyext.o | sed -n '/^........ [CD] _\(.*\)$$/s//#define \1 (*__imp_\1)/p' >import.h 
+	$(LDSHARED) $(DLDFLAGS) -o $(RUBYCWDLL) --output-lib=$(LIBRUBY_SO) --dllname=$(RUBYCWDLL) -Wl,-e,__cygwin_noncygwin_dll_entry@12 --add-stdcall-alias $(OBJS) dmyext.o
+	@NM@ --extern-only $(OBJS) dmyext.o | sed -n '/^........ [CD] _\(.*\)$$/s//#define \1 (*__imp_\1)/p' >import.h