[ruby-dev:40973] [BUG: trunk]arm-linux向けクロスコンパイル時のエラー

芝と申します．

i686-linuxからarm-linux向けにクロスコンパイルをしようとしたところ，
gc.h，gc.c，thread_pthread.cの3つのファイルでコンパイルエラーを確認しま
した．
キャストやマクロの定義，関数の宣言にちょっとしたミスがあるようです．

クロスコンパイラはCodeSourceryさんのものを使用しています．
http://www.codesourcery.com/sgpp/lite/arm/portal/subscription?@template=lite



% ./configure --target=arm-linux --host=arm-linux
--with-baseruby=ruby-1.9.2-dev CC=arm-none-linux-gnueabi-gcc
LD=arm-none-linux-gnueabi-gcc AR=arm-none-linux-gnueabi-ar
RANLIB=arm-none-linux-gnueabi-ranlib

%make
gc.c:1186: error: conflicting types for 'ruby_get_stack_grow_direction'
gc.h:69: note: previous declaration of 'ruby_get_stack_grow_direction'
was here
gc.c: In function 'mark_current_machine_context':
gc.c:2118: error: 'start' undeclared (first use in this function)
gc.c:2118: error: (Each undeclared identifier is reported only once
gc.c:2118: error: for each function it appears in.)
gc.c:2118: error: 'end' undeclared (first use in this function)
gc.c: In function 'rb_gc_mark_machine_stack':
gc.c:2225: error: 'start' undeclared (first use in this function)
gc.c:2225: error: 'end' undeclared (first use in this function)
...
thread_pthread.c: In function 'get_stack':
thread_pthread.c:224: error: invalid use of void expression






以下のパッチでコンパイルは通りました．

Index: thread_pthread.c
===================================================================
--- thread_pthread.c (revision 27328)
+++ thread_pthread.c (working copy)
@@ -190,7 +190,7 @@
#define STACK_DIR_UPPER(a,b) STACK_UPPER(0, a, b)
#else
#define STACK_GROW_DIR_DETECTION VALUE stack_grow_dir_detection
-#define STACK_DIR_UPPER(a,b) STACK_UPPER(&stack_grow_dir_detection, a, b)
+#define STACK_DIR_UPPER(a,b) STACK_UPPER(&stack_grow_dir_detection,
(a), (b))
#endif

#if defined HAVE_PTHREAD_GETATTR_NP || defined HAVE_PTHREAD_ATTR_GET_NP
@@ -221,7 +221,7 @@
# endif
if (pthread_attr_getguardsize(&attr, &guard) == 0) {
STACK_GROW_DIR_DETECTION;
- STACK_DIR_UPPER((void)0, *addr = (char *)*addr + guard);
+ STACK_DIR_UPPER((void *)0, *addr = (char *)*addr + guard);
*size -= guard;
}
# else
Index: gc.c
===================================================================
--- gc.c (revision 27328)
+++ gc.c (working copy)
@@ -2099,7 +2099,7 @@
#elif STACK_GROW_DIRECTION > 0
#define GET_STACK_BOUNDS(start, end, appendix) (start = STACK_START, end
= STACK_END+appendix)
#else
-#define GET_STACK_BOUNDS(stack_start, stack_end, appendix) \
+#define GET_STACK_BOUNDS(start, end, appendix) \
((STACK_END < STACK_START) ? \
(start = STACK_END, end = STACK_START) : (start = STACK_START, end =
STACK_END+appendix))
#endif
Index: gc.h
===================================================================
--- gc.h (revision 27328)
+++ gc.h (working copy)
@@ -66,7 +66,7 @@
# define STACK_UPPER(x, a, b) b
#else
RUBY_EXTERN int ruby_stack_grow_direction;
-int ruby_get_stack_grow_direction(VALUE *addr);
+int ruby_get_stack_grow_direction(volatile VALUE *addr);
# define stack_growup_p(x) ( \
(ruby_stack_grow_direction ? \
ruby_stack_grow_direction : \