re PR bootstrap/9330 ([alpha-osf]small alphaev56-dec-osf5.1 --enable-threads=posix problem)

	* config.gcc (alpha*-dec-osf[45]*): Enable POSIX thread support by
	default.

	* gthr-posix.c: New file.
	* gthr-posix.h: Define _REENTRANT if missing.
	Make _LIBOBJC #pragma weak visible with _LIBOBJC_WEAK.

	* config/alpha/t-osf4 (SHLIB_LINK): Hide dummy functions provided
	by gthr-posix.o.
	* config/alpha/t-osf-pthread: New file.

	* fixinc/inclhack.def (alpha_pthread): New fix.
	* fixinc/fixincl.x: Regenerate.
	* fixinc/tests/base/pthread.h [ALPHA_PTHREAD_CHECK]: New testcase.

	* doc/install.texi (alpha*-dec-osf*): Remove --enable-threads
	warning.
	Fixes PR bootstrap/9330.

From-SVN: r69998

3 files changed, 76 insertions, 5 deletions

diff --git a/gcc/fixinc/fixincl.x b/gcc/fixinc/fixincl.x
index c25527b..d08f86c 100644
--- a/gcc/fixinc/fixincl.x
+++ b/gcc/fixinc/fixincl.x
@@ -2,11 +2,11 @@
  * 
  * DO NOT EDIT THIS FILE   (fixincl.x)
  * 
- * It has been AutoGen-ed  Thursday July 17, 2003 at 10:34:33 AM PDT
+ * It has been AutoGen-ed  Tuesday July 29, 2003 at 08:15:05 PM MEST
  * From the definitions    inclhack.def
  * and the template file   fixincl
  */
-/* DO NOT CVS-MERGE THIS FILE, EITHER Thu Jul 17 10:34:33 PDT 2003
+/* DO NOT CVS-MERGE THIS FILE, EITHER Tue Jul 29 20:15:06 MEST 2003
  *
  * You must regenerate it.  Use the ./genfixes script.
  *
@@ -15,7 +15,7 @@
  * certain ANSI-incompatible system header files which are fixed to work
  * correctly with ANSI C and placed in a directory that GNU C will search.
  *
- * This file contains 154 fixup descriptions.
+ * This file contains 155 fixup descriptions.
  *
  * See README for more information.
  *
@@ -859,6 +859,45 @@ static const char* apzAlpha_ParensPatch[] = {
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * *
  *
+ *  Description of Alpha_Pthread fix
+ */
+tSCC zAlpha_PthreadName[] =
+     "alpha_pthread";
+
+/*
+ *  File name selection pattern
+ */
+tSCC zAlpha_PthreadList[] =
+  "|pthread.h|";
+/*
+ *  Machine/OS name selection pattern
+ */
+tSCC* apzAlpha_PthreadMachs[] = {
+        "alpha*-dec-osf*",
+        (const char*)NULL };
+
+/*
+ *  content selection pattern - do fix if pattern found
+ */
+tSCC zAlpha_PthreadSelect0[] =
+       "(#[ \t]*if defined \\(_PTHREAD_ENV_DECC\\) || defined \\(_PTHREAD_ENV_EPCC\\))\n\
+(#[ \t]*define _PTHREAD_USE_PTDNAM_)";
+
+#define    ALPHA_PTHREAD_TEST_CT  1
+static tTestDesc aAlpha_PthreadTests[] = {
+  { TT_EGREP,    zAlpha_PthreadSelect0, (regex_t*)NULL }, };
+
+/*
+ *  Fix Command Arguments for Alpha_Pthread
+ */
+static const char* apzAlpha_PthreadPatch[] = {
+    "format",
+    "%1 || defined (__PRAGMA_EXTERN_PREFIX)\n\
+%2",
+    (char*)NULL };
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ *
  *  Description of Alpha_Sbrk fix
  */
 tSCC zAlpha_SbrkName[] =
@@ -6109,9 +6148,9 @@ static const char* apzX11_SprintfPatch[] = {
  *
  *  List of all fixes
  */
-#define REGEX_COUNT          173
+#define REGEX_COUNT          174
 #define MACH_LIST_SIZE_LIMIT 261
-#define FIX_COUNT            154
+#define FIX_COUNT            155
 
 /*
  *  Enumerate the fixes
@@ -6135,6 +6174,7 @@ typedef enum {
     ALPHA_ASSERT_FIXIDX,
     ALPHA_GETOPT_FIXIDX,
     ALPHA_PARENS_FIXIDX,
+    ALPHA_PTHREAD_FIXIDX,
     ALPHA_SBRK_FIXIDX,
     AVOID_BOOL_DEFINE_FIXIDX,
     AVOID_BOOL_TYPE_FIXIDX,
@@ -6364,6 +6404,11 @@ tFixDesc fixDescList[ FIX_COUNT ] = {
      ALPHA_PARENS_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,
      aAlpha_ParensTests,   apzAlpha_ParensPatch, 0 },
 
+  {  zAlpha_PthreadName,    zAlpha_PthreadList,
+     apzAlpha_PthreadMachs,
+     ALPHA_PTHREAD_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,
+     aAlpha_PthreadTests,   apzAlpha_PthreadPatch, 0 },
+
   {  zAlpha_SbrkName,    zAlpha_SbrkList,
      apzAlpha_SbrkMachs,
      ALPHA_SBRK_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,
diff --git a/gcc/fixinc/inclhack.def b/gcc/fixinc/inclhack.def
index 7fd6f45..b593d83 100644
--- a/gcc/fixinc/inclhack.def
+++ b/gcc/fixinc/inclhack.def
@@ -578,6 +578,25 @@ fix = {
 
 
 /*
+ *  Obey __PRAGMA_EXTERN_PREFIX for Tru64 UNIX <pthread.h>.
+ */
+fix = {
+    hackname  = alpha_pthread;
+    files     = pthread.h;
+    select    = "(#[ \t]*if defined \\(_PTHREAD_ENV_DECC\\) || defined \\(_PTHREAD_ENV_EPCC\\))\n"
+		"(#[ \t]*define _PTHREAD_USE_PTDNAM_)";
+
+    mach      = "alpha*-dec-osf*";
+    c_fix     = format;
+    c_fix_arg = "%1 || defined (__PRAGMA_EXTERN_PREFIX)\n%2";
+
+    test_text = "#  if defined (_PTHREAD_ENV_DECC) || defined (_PTHREAD_ENV_EPCC)\n"
+		"#   define _PTHREAD_USE_PTDNAM_\n"
+		"#  endif";
+};
+
+
+/*
  *  Fix return value of sbrk in unistd.h on Alpha OSF/1 V2.0
  *  And OpenBSD.
  */
diff --git a/gcc/fixinc/tests/base/pthread.h b/gcc/fixinc/tests/base/pthread.h
index ec7ff35..95ad2d5 100644
--- a/gcc/fixinc/tests/base/pthread.h
+++ b/gcc/fixinc/tests/base/pthread.h
@@ -15,6 +15,13 @@
 #endif  /* AIX_PTHREAD_CHECK */
 
 
+#if defined( ALPHA_PTHREAD_CHECK )
+#  if defined (_PTHREAD_ENV_DECC) || defined (_PTHREAD_ENV_EPCC) || defined (__PRAGMA_EXTERN_PREFIX)
+#   define _PTHREAD_USE_PTDNAM_
+#  endif
+#endif  /* ALPHA_PTHREAD_CHECK */
+
+
 #if defined( PTHREAD_PAGE_SIZE_CHECK )
 extern int __page_size;
 #endif  /* PTHREAD_PAGE_SIZE_CHECK */