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Use intra-DSO calls when we build libbusybox. No-op for normal build.

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This was Bernhard Fischer' idea.

   text    data     bss     dec     hex filename
 773549    7781    9740  791070   c121e busybox.t7/0_lib/libbusybox.so.1.11.0.svn_unstripped
 769683    7397    9740  786820   c0184 busybox.t9t/0_lib/libbusybox.so.1.11.0.svn_unstripped
This commit is contained in:
Denis Vlasenko
2008-05-09 17:59:34 +00:00
parent 50dbed95fb
commit 98636eb08c
27 changed files with 263 additions and 66 deletions
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52
include/platform.h
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@@ -17,7 +17,7 @@
#endif
/* __restrict is known in EGCS 1.2 and above. */
#if !__GNUC_PREREQ (2,92)
#if !__GNUC_PREREQ(2,92)
# ifndef __restrict
# define __restrict /* Ignore */
# endif
@@ -27,7 +27,7 @@
macros freely, and know that they will come into play for the
version of gcc in which they are supported. */
#if !__GNUC_PREREQ (2,7)
#if !__GNUC_PREREQ(2,7)
# ifndef __attribute__
# define __attribute__(x)
# endif
@@ -37,7 +37,7 @@
#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
/* it's a keyword */
#else
# if __GNUC_PREREQ (2,7)
# if __GNUC_PREREQ(2,7)
# define inline __inline__
# else
# define inline
@@ -48,49 +48,49 @@
# define __const const
#endif
# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
# define ATTRIBUTE_PACKED __attribute__ ((__packed__))
# define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))
#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
#define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
#define ATTRIBUTE_PACKED __attribute__ ((__packed__))
#define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))
/* __NO_INLINE__: some gcc's do not honor inlining! :( */
# if __GNUC_PREREQ (3,0) && !defined(__NO_INLINE__)
# define ALWAYS_INLINE __attribute__ ((always_inline)) inline
#if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
# define ALWAYS_INLINE __attribute__ ((always_inline)) inline
/* I've seen a toolchain where I needed __noinline__ instead of noinline */
# define NOINLINE __attribute__((__noinline__))
# if !ENABLE_WERROR
# define ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
# define ATTRIBUTE_UNUSED_RESULT __attribute__ ((warn_unused_result))
# else
# define ATTRIBUTE_DEPRECATED /* n/a */
# define ATTRIBUTE_UNUSED_RESULT /* n/a */
# endif
# define NOINLINE __attribute__((__noinline__))
# if !ENABLE_WERROR
# define ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
# define ATTRIBUTE_UNUSED_RESULT __attribute__ ((warn_unused_result))
# else
# define ALWAYS_INLINE inline /* n/a */
# define NOINLINE /* n/a */
# define ATTRIBUTE_DEPRECATED /* n/a */
# define ATTRIBUTE_UNUSED_RESULT /* n/a */
# endif
#else
# define ALWAYS_INLINE inline /* n/a */
# define NOINLINE /* n/a */
# define ATTRIBUTE_DEPRECATED /* n/a */
# define ATTRIBUTE_UNUSED_RESULT /* n/a */
#endif
/* -fwhole-program makes all symbols local. The attribute externally_visible
forces a symbol global. */
# if __GNUC_PREREQ (4,1)
# define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
#if __GNUC_PREREQ(4,1)
# define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
//__attribute__ ((__externally_visible__))
# else
# define EXTERNALLY_VISIBLE
# endif /* GNUC >= 4.1 */
#else
# define EXTERNALLY_VISIBLE
#endif /* GNUC >= 4.1 */
/* We use __extension__ in some places to suppress -pedantic warnings
about GCC extensions. This feature didn't work properly before
gcc 2.8. */
#if !__GNUC_PREREQ (2,8)
#if !__GNUC_PREREQ(2,8)
# ifndef __extension__
# define __extension__
# endif
#endif
/* gcc-2.95 had no va_copy but only __va_copy. */
#if !__GNUC_PREREQ (3,0)
#if !__GNUC_PREREQ(3,0)
# include <stdarg.h>
# if !defined va_copy && defined __va_copy
# define va_copy(d,s) __va_copy((d),(s))