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* configure.in (rb_cv_gcc_function_alias): checks alias attribute.

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* string.c (alias_func): replaced with RUBY_ALIAS_FUNCTION.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18589 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2008-08-13 15:43:55 +00:00
parent ca3c54c0ee
commit 3622cd196c
3 changed files with 31 additions and 16 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Thu Aug 14 00:43:53 2008 Nobuyoshi Nakada <nobu@ruby-lang.org>
* configure.in (rb_cv_gcc_function_alias): checks alias attribute.
* string.c (alias_func): replaced with RUBY_ALIAS_FUNCTION.
Wed Aug 13 23:42:49 2008 Nobuyoshi Nakada <nobu@ruby-lang.org>
* common.mk (parse.h): fake rule.

17
configure.in
View file

@ -445,6 +445,23 @@ RUBY_FUNC_ATTRIBUTE(stdcall)
RUBY_FUNC_ATTRIBUTE(cdecl)
RUBY_FUNC_ATTRIBUTE(fastcall)
if test "$GCC" = yes; then
AC_CACHE_CHECK([for function alias], [rb_cv_gcc_function_alias],
[rb_cv_gcc_function_alias=no
for a in alias weak,alias; do
AC_TRY_LINK([void foo(void) {}
void bar(void) __attribute__(($a("foo")));], [bar()],
[rb_cv_gcc_function_alias=$a; break])
done])
if test "$rb_cv_gcc_function_alias" = no; then
AC_DEFINE([RUBY_ALIAS_FUNCTION(old_prot, new_name, args)],
[VALUE old_prot {return new_name args;}])
else
AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION(old_prot, new_name, args)],
[VALUE old_prot __attribute__(($rb_cv_gcc_function_alias(@%:@new_name)));])
fi
fi
AC_CACHE_CHECK([for RUBY_EXTERN], rb_cv_ruby_extern,
[rb_cv_ruby_extern=no
for mac in "__attribute__((dllimport))" "__declspec(dllimport)"; do

24
string.c
View file

@ -43,14 +43,6 @@
VALUE rb_cString;
VALUE rb_cSymbol;
#ifdef __GNUC__
#define alias_func(old_prot, new_name, args) \
VALUE old_prot __attribute__((weak, alias(#new_name)));
#else
#define alias_func(old_prot, new_name, args) \
VALUE old_prot {return new_name args;}
#endif
#define STR_TMPLOCK FL_USER7
#define STR_NOEMBED FL_USER1
#define STR_SHARED FL_USER2 /* = ELTS_SHARED */
@ -440,7 +432,7 @@ rb_str_new_cstr(const char *ptr)
return rb_str_new(ptr, strlen(ptr));
}
alias_func(rb_str_new2(const char *ptr), rb_str_new_cstr, (ptr))
RUBY_ALIAS_FUNCTION(rb_str_new2(const char *ptr), rb_str_new_cstr, (ptr))
#define rb_str_new2 rb_str_new_cstr
VALUE
@ -451,7 +443,7 @@ rb_usascii_str_new_cstr(const char *ptr)
return str;
}
alias_func(rb_usascii_str_new2(const char *ptr), rb_usascii_str_new_cstr, (ptr))
RUBY_ALIAS_FUNCTION(rb_usascii_str_new2(const char *ptr), rb_usascii_str_new_cstr, (ptr))
#define rb_usascii_str_new2 rb_usascii_str_new_cstr
VALUE
@ -472,7 +464,7 @@ rb_tainted_str_new_cstr(const char *ptr)
return str;
}
alias_func(rb_tainted_str_new2(const char *ptr), rb_tainted_str_new_cstr, (ptr))
RUBY_ALIAS_FUNCTION(rb_tainted_str_new2(const char *ptr), rb_tainted_str_new_cstr, (ptr))
#define rb_tainted_str_new2 rb_tainted_str_new_cstr
static VALUE
@ -516,7 +508,7 @@ rb_str_new_shared(VALUE str)
return str2;
}
alias_func(rb_str_new3(VALUE str), rb_str_new_shared, (str))
RUBY_ALIAS_FUNCTION(rb_str_new3(VALUE str), rb_str_new_shared, (str))
#define rb_str_new3 rb_str_new_shared
static VALUE
@ -579,7 +571,7 @@ rb_str_new_frozen(VALUE orig)
return str;
}
alias_func(rb_str_new4(VALUE orig), rb_str_new_frozen, (orig))
RUBY_ALIAS_FUNCTION(rb_str_new4(VALUE orig), rb_str_new_frozen, (orig))
#define rb_str_new4 rb_str_new_frozen
VALUE
@ -588,7 +580,7 @@ rb_str_new_with_class(VALUE obj, const char *ptr, long len)
return str_new(rb_obj_class(obj), ptr, len);
}
alias_func(rb_str_new5(VALUE obj, const char *ptr, long len),
RUBY_ALIAS_FUNCTION(rb_str_new5(VALUE obj, const char *ptr, long len),
rb_str_new_with_class, (obj, ptr, len))
#define rb_str_new5 rb_str_new_with_class
@ -622,7 +614,7 @@ rb_str_buf_new_cstr(const char *ptr)
return str;
}
alias_func(rb_str_buf_new2(const char *ptr), rb_str_buf_new_cstr, (ptr))
RUBY_ALIAS_FUNCTION(rb_str_buf_new2(const char *ptr), rb_str_buf_new_cstr, (ptr))
#define rb_str_buf_new2 rb_str_buf_new_cstr
VALUE
@ -1365,7 +1357,7 @@ rb_str_freeze(VALUE str)
return rb_obj_freeze(str);
}
alias_func(rb_str_dup_frozen(VALUE str), rb_str_new_frozen, (str))
RUBY_ALIAS_FUNCTION(rb_str_dup_frozen(VALUE str), rb_str_new_frozen, (str))
#define rb_str_dup_frozen rb_str_new_frozen
VALUE