Define GC_GLIBC_PREREQ internal macro

(refactoring)

* dyn_load.c [(SCO_ELF || DGUX || HURD || NACL || __ELF__ && (LINUX
|| FREEBSD || NETBSD || OPENBSD)) && !USE_PROC_FOR_LIBRARIES &&
!HAVE_DL_ITERATE_PHDR] (HAVE_DL_ITERATE_PHDR): Replace
__GLIBC__>2||__GLIBC__==2&&__GLIBC_MINOR__>2 to GC_GLIBC_PREREQ(2,3).
* dyn_load.c [(SCO_ELF || DGUX || HURD || NACL || __ELF__ && (LINUX
|| FREEBSD || NETBSD || OPENBSD)) && !USE_PROC_FOR_LIBRARIES &&
__GLIBC__==2 && __GLIBC_MINOR__==2 && DT_CONFIG
&& !HAVE_DL_ITERATE_PHDR] (HAVE_DL_ITERATE_PHDR): Do not define.
* include/private/gcconfig.h [LINUX]: Move include features.h upper
(to be before GC_GLIBC_PREREQ); add TODO item; refine comment.
* include/private/gcconfig.h (GC_GLIBC_PREREQ): Define macro.
* include/private/gcconfig.h [(M68K || I386 || ARM32) && LINUX
&& __ELF__]: Replace defined(__GLIBC__)&&__GLIBC__>=2 to
GC_GLIBC_PREREQ(2,0).
* include/private/gcconfig.h [MIPS && LINUX]: Replace
__GLIBC__>2||__GLIBC__==2&&__GLIBC_MINOR__>=2 to GC_GLIBC_PREREQ(2,2).
* include/private/gcconfig.h [MPROTECT_VDB && __GLIBC__]: Replace
__GLIBC__<2||__GLIBC__==2&&__GLIBC_MINOR__<2 to !GC_GLIBC_PREREQ(2,2).
* malloc.c [REDIRECT_MALLOC && GC_LINUX_THREADS && __GLIBC__]
(GC_init_lib_bounds): Replace
__GLIBC__<2||__GLIBC__==2&&__GLIBC_MINOR__<34 to
!GC_GLIBC_PREREQ(2,34).
* os_dep.c [(I386 && SAVE_CALL_CHAIN || SPARC) && LINUX]: Do not
include features.h.

1 files changed, 0 insertions, 4 deletions

diff --git a/os_dep.c b/os_dep.c
index b5e5ba4d..361baee4 100644
--- a/os_dep.c
+++ b/os_dep.c
@@ -4999,8 +4999,6 @@ GC_API int GC_CALL GC_get_pages_executable(void)
 /* long as the frame pointer is explicitly stored.  In the case of gcc, */
 /* compiler flags (e.g. -fomit-frame-pointer) determine whether it is.  */
 #if defined(I386) && defined(LINUX) && defined(SAVE_CALL_CHAIN)
-#   include <features.h>
-
     struct frame {
         struct frame *fr_savfp;
         long    fr_savpc;
@@ -5012,8 +5010,6 @@ GC_API int GC_CALL GC_get_pages_executable(void)
 
 #if defined(SPARC)
 # if defined(LINUX)
-#   include <features.h>
-
 #   if defined(SAVE_CALL_CHAIN)
       struct frame {
         long    fr_local[8];