* cccp.c (sys_errlist): Remove special 4.4bsd declaration.

        * collect2.c (sys_errlist): Likewise.
        * cpplib.c (sys_errlist): Likewise.
        * gcc.c (sys_errlist): Likewise.
        * protoize (sys_errlist): Likewise.
        * configure.in: Check for strerror.
        * xm-freebsd.h (HAVE_STRERROR): Remove definition.
        * xm-gnu.h (HAVE_STRERROR): Likewise.
        * xm-linux.h (HAVE_STRERROR): Likewise.
        * xm-netbsd.h (HAVE_STRERROR): Likewise.
        * xm-bsd386.h (HAVE_STRERROR): Likewise.
        * xm-cygwin32.h (HAVE_STRERROR): Likewise.
        * xm-dos.h (HAVE_STRERROR): Likewise.
        * xm-mingw32.h (HAVE_STRERROR): Likewise.
        * xm-pa.h (HAVE_STRERROR): Likewise.
        * xm-papro.h (HAVE_STRERROR): Likewise.
        * xm-sysv4.h (HAVE_STRERROR): Likewise.
        * configure, config.in: Rebuilt.
Remove the need to define HAVE_STRERROR for each host port.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@15011 138bc75d-0d04-0410-961f-82ee72b054a4

22 files changed, 80 insertions, 46 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2b2732bc922..e7fdc68a310 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,24 @@
 Mon Sep  1 08:29:46 1997  Jeffrey A Law  (law@cygnus.com)
 
+	* cccp.c (sys_errlist): Remove special 4.4bsd declaration.
+	* collect2.c (sys_errlist): Likewise.
+	* cpplib.c (sys_errlist): Likewise.
+	* gcc.c (sys_errlist): Likewise.
+	* protoize (sys_errlist): Likewise.
+	* configure.in: Check for strerror.
+	* xm-freebsd.h (HAVE_STRERROR): Remove definition.
+	* xm-gnu.h (HAVE_STRERROR): Likewise.
+	* xm-linux.h (HAVE_STRERROR): Likewise.
+	* xm-netbsd.h (HAVE_STRERROR): Likewise.
+	* xm-bsd386.h (HAVE_STRERROR): Likewise.
+	* xm-cygwin32.h (HAVE_STRERROR): Likewise.
+	* xm-dos.h (HAVE_STRERROR): Likewise.
+	* xm-mingw32.h (HAVE_STRERROR): Likewise.
+	* xm-pa.h (HAVE_STRERROR): Likewise.
+	* xm-papro.h (HAVE_STRERROR): Likewise.
+	* xm-sysv4.h (HAVE_STRERROR): Likewise.
+	* configure, config.in: Rebuilt.
+
 	* Makefile.in: Add several missing "else true" clauses.
 
 	* collect2.c: Change DONT_DECLARE_SYS_SIGLIST to SYS_SIGLIST_DECLARED.
diff --git a/gcc/cccp.c b/gcc/cccp.c
index 0df37379490..9a1108e6d0f 100644
--- a/gcc/cccp.c
+++ b/gcc/cccp.c
@@ -306,11 +306,7 @@ extern char *version_string;
 #ifndef VMS
 #ifndef HAVE_STRERROR
 extern int sys_nerr;
-#if defined(bsd4_4)
-extern const char *const sys_errlist[];
-#else
 extern char *sys_errlist[];
-#endif
 #else	/* HAVE_STRERROR */
 char *strerror ();
 #endif
diff --git a/gcc/collect2.c b/gcc/collect2.c
index 13cb59367bb..7c17824cc01 100644
--- a/gcc/collect2.c
+++ b/gcc/collect2.c
@@ -45,11 +45,7 @@ extern int errno;
 #endif
 
 #ifndef HAVE_STRERROR
-#if defined(bsd4_4) 
-extern const char *const sys_errlist[];
-#else
 extern char *sys_errlist[];
-#endif
 extern int sys_nerr;
 #else
 char *strerror();
diff --git a/gcc/config.in b/gcc/config.in
index f14c397b9dc..3200bbb2ef1 100644
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -19,6 +19,9 @@
 /* Define if `sys_siglist' is declared by <signal.h>.  */
 #undef SYS_SIGLIST_DECLARED
 
+/* Define if you have the strerror function.  */
+#undef HAVE_STRERROR
+
 /* Define if you have the <stddef.h> header file.  */
 #undef HAVE_STDDEF_H
 
diff --git a/gcc/config/alpha/xm-linux.h b/gcc/config/alpha/xm-linux.h
index 1333d2160c3..ea180dfb027 100644
--- a/gcc/config/alpha/xm-linux.h
+++ b/gcc/config/alpha/xm-linux.h
@@ -1,2 +1 @@
-#define HAVE_STRERROR
 #define USE_BFD
diff --git a/gcc/config/i386/xm-bsd386.h b/gcc/config/i386/xm-bsd386.h
index abcce3f01cb..6b8eee7db03 100644
--- a/gcc/config/i386/xm-bsd386.h
+++ b/gcc/config/i386/xm-bsd386.h
@@ -1,5 +1,3 @@
 /* Configuration for GCC for Intel i386 running BSDI's BSD/386 as host.  */
 
 #include "i386/xm-i386.h"
-
-#define HAVE_STRERROR
diff --git a/gcc/config/i386/xm-cygwin32.h b/gcc/config/i386/xm-cygwin32.h
index b3f4c04b5fb..c45e75cd773 100644
--- a/gcc/config/i386/xm-cygwin32.h
+++ b/gcc/config/i386/xm-cygwin32.h
@@ -20,7 +20,6 @@ the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA. */
 
 #define NO_STAB_H
-#define HAVE_STRERROR
 #define HAVE_RUSAGE
 #define HAVE_FILE_H
 #define EXECUTABLE_SUFFIX ".exe"
diff --git a/gcc/config/i386/xm-dos.h b/gcc/config/i386/xm-dos.h
index 1dd0c013b1d..e6e06f4e809 100644
--- a/gcc/config/i386/xm-dos.h
+++ b/gcc/config/i386/xm-dos.h
@@ -15,6 +15,3 @@
 #define MKTEMP_EACH_FILE 1
 
 #define NO_PRECOMPILES 1
-
-/* sys_errlist proto in cccp.c doesn't match djgpp */
-#define HAVE_STRERROR
diff --git a/gcc/config/i386/xm-mingw32.h b/gcc/config/i386/xm-mingw32.h
index 57ff72abf30..b6bd1c3ee3e 100644
--- a/gcc/config/i386/xm-mingw32.h
+++ b/gcc/config/i386/xm-mingw32.h
@@ -20,7 +20,6 @@ the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA. */
 
 #define NO_STAB_H
-#define HAVE_STRERROR
 #define HAVE_RUSAGE
 #define HAVE_FILE_H
 
diff --git a/gcc/config/pa/xm-pa.h b/gcc/config/pa/xm-pa.h
index 3d86e88986c..0249055bf6e 100644
--- a/gcc/config/pa/xm-pa.h
+++ b/gcc/config/pa/xm-pa.h
@@ -50,9 +50,6 @@ extern int errno;
 /* Don't try to use sys_siglist.  */
 #define NO_SYS_SIGLIST
 
-/* We have strerror, don't try to use sys_errlist.  */
-#define HAVE_STRERROR
-
 /* 4.3BSD, OSF1 and Lites on the PA are all derived from NET2 or
    later code from Berkeley.  */
 #define __BSD_NET2__
diff --git a/gcc/config/pa/xm-papro.h b/gcc/config/pa/xm-papro.h
index 66ec811b4ac..d36e2015ce7 100644
--- a/gcc/config/pa/xm-papro.h
+++ b/gcc/config/pa/xm-papro.h
@@ -50,9 +50,6 @@ extern int errno;
 /* Don't try to use sys_siglist.  */
 #define NO_SYS_SIGLIST
 
-/* We have strerror, don't try to use sys_errlist.  */
-#define HAVE_STRERROR
-
 /* HP's compiler has problems with enum bitfields.  */
 #define ONLY_INT_FIELDS
 
diff --git a/gcc/config/rs6000/xm-cygwin32.h b/gcc/config/rs6000/xm-cygwin32.h
index f7e30a15524..158e54edc0f 100644
--- a/gcc/config/rs6000/xm-cygwin32.h
+++ b/gcc/config/rs6000/xm-cygwin32.h
@@ -23,7 +23,6 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 #include "rs6000/xm-rs6000.h"
 
-#define HAVE_STRERROR
 #define HAVE_RUSAGE
 #define HAVE_FILE_H
 #define EXECUTABLE_SUFFIX ".exe"
diff --git a/gcc/config/rs6000/xm-sysv4.h b/gcc/config/rs6000/xm-sysv4.h
index 3a13a579461..5089c7dd467 100644
--- a/gcc/config/rs6000/xm-sysv4.h
+++ b/gcc/config/rs6000/xm-sysv4.h
@@ -56,9 +56,6 @@ extern char *alloca ();
 #define ONLY_INT_FIELDS
 #endif
 
-/* We have STRERROR */
-#define HAVE_STRERROR
-
 #ifdef __PPC__
 #ifndef __STDC__
 extern char *malloc (), *realloc (), *calloc ();
diff --git a/gcc/config/xm-freebsd.h b/gcc/config/xm-freebsd.h
index ab3aa114382..b71ff56ca10 100644
--- a/gcc/config/xm-freebsd.h
+++ b/gcc/config/xm-freebsd.h
@@ -22,6 +22,3 @@ Boston, MA 02111-1307, USA.  */
    running FreeBSD.  This file should not be specified as $xm_file itself;
    instead $xm_file should be CPU/xm-freebsd.h, which should include both
    CPU/xm-CPU.h and this file xm-freebsd.h.  */
-   
-/* FreeBSD has strerror.  */
-#define HAVE_STRERROR
diff --git a/gcc/config/xm-gnu.h b/gcc/config/xm-gnu.h
index 62debf6de94..64e8e2fa817 100644
--- a/gcc/config/xm-gnu.h
+++ b/gcc/config/xm-gnu.h
@@ -23,7 +23,6 @@ Boston, MA 02111-1307, USA.  */
    instead $xm_file should be CPU/xm-gnu.h, which should include both
    CPU/xm-CPU.h and this file xm-gnu.h.  */
 
-#define HAVE_STRERROR		/* GNU has strerror.  */
 #define POSIX			/* GNU complies to POSIX.1.  */
 
 #ifndef inhibit_libc
diff --git a/gcc/config/xm-linux.h b/gcc/config/xm-linux.h
index 4ccf001173b..2a2b62bc964 100644
--- a/gcc/config/xm-linux.h
+++ b/gcc/config/xm-linux.h
@@ -22,9 +22,6 @@ Boston, MA 02111-1307, USA.  */
 #undef  HAVE_VPRINTF
 #define HAVE_VPRINTF
 
-#undef  HAVE_STRERROR
-#define HAVE_STRERROR
-
 #undef  HAVE_POPEN
 #define HAVE_POPEN
 
diff --git a/gcc/config/xm-netbsd.h b/gcc/config/xm-netbsd.h
index 00000ce9706..099a9234ffa 100644
--- a/gcc/config/xm-netbsd.h
+++ b/gcc/config/xm-netbsd.h
@@ -23,5 +23,4 @@ Boston, MA 02111-1307, USA.  */
    instead $xm_file should be CPU/xm-netbsd.h, which should include both
    CPU/xm-CPU.h and this file xm-netbsd.h.  */
    
-#define HAVE_STRERROR
 #define HAVE_VPRINTF
diff --git a/gcc/configure b/gcc/configure
index b91c782f123..0e16d03cc16 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -1560,6 +1560,62 @@ EOF
 fi
 
 
+for ac_func in strerror
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:1567: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1572 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func(); below.  */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:1595: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
+
 # File extensions
 manext='.1'
 objext='.o'
diff --git a/gcc/configure.in b/gcc/configure.in
index cb2d6f1bffc..2611ed85907 100644
--- a/gcc/configure.in
+++ b/gcc/configure.in
@@ -142,6 +142,8 @@ GCC_NEED_DECLARATION(free)
 
 AC_DECL_SYS_SIGLIST
 
+AC_CHECK_FUNCS(strerror)
+
 # File extensions
 manext='.1'
 objext='.o'
diff --git a/gcc/cpplib.c b/gcc/cpplib.c
index 50ef8caae34..2f0fff79f64 100644
--- a/gcc/cpplib.c
+++ b/gcc/cpplib.c
@@ -7483,11 +7483,7 @@ extern int errno;
 #ifndef VMS
 #ifndef HAVE_STRERROR
 extern int sys_nerr;
-#if defined(bsd4_4)
-extern const char *const sys_errlist[];
-#else
 extern char *sys_errlist[];
-#endif
 #else	/* HAVE_STRERROR */
 char *strerror ();
 #endif
diff --git a/gcc/gcc.c b/gcc/gcc.c
index c09285b6270..a03f972c655 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -143,11 +143,7 @@ extern int errno;
 
 #ifndef HAVE_STRERROR
 extern int sys_nerr;
-#if defined(bsd4_4)
-extern const char *const sys_errlist[];
-#else
 extern char *sys_errlist[];
-#endif
 #else
 extern char *strerror();
 #endif
diff --git a/gcc/protoize.c b/gcc/protoize.c
index bf5cfc764d2..bd4ac02bf56 100644
--- a/gcc/protoize.c
+++ b/gcc/protoize.c
@@ -89,11 +89,7 @@ extern int errno;
 
 #ifndef HAVE_STRERROR
 extern int sys_nerr;
-#if defined(bsd4_4)
-extern const char *const sys_errlist[];
-#else
 extern char *sys_errlist[];
-#endif
 #else
 extern char *strerror();
 #endif