configure.in (getlogin,getgid,getuid, [...]): Check.

	* libU77/configure.in (getlogin,getgid,getuid, kill,link,ttyname):
	Check.
	* libU77/config.h.in (HAVE_GETLOGIN, HAVE_GETGID, HAVE_GETUID,
	HAVE_KILL, HAVE_LINK, HAVE_TTYNAME): New defs.
	* libU77/getlog_.c: Conditionalize for target platform. Set errno
	to ENOSYS if target libc doesn't have the function.
	* libU77/getgid_.c: Likewise.
	* libU77/getuid_.c: Likewise.
	* libU77/kill_.c: Likewise.
	* libU77/link_.c: Likewise.
	* libU77/ttynam_.c: Likewise.

From-SVN: r17562

9 files changed, 60 insertions, 17 deletions

diff --git a/gcc/f/runtime/libU77/Makefile.in b/gcc/f/runtime/libU77/Makefile.in
index c2160a3..bb10171 100644
--- a/gcc/f/runtime/libU77/Makefile.in
+++ b/gcc/f/runtime/libU77/Makefile.in
@@ -25,30 +25,19 @@ VPATH = @srcdir@
 
 #### Start of system configuration section. ####
 
-# The _FOR_TARGET things are appropriate for a cross-make, passed by the
-# superior makefile
-GCC_FOR_TARGET = @CC@
-CC = $(GCC_FOR_TARGET)
-CFLAGS = @CFLAGS@ $(GCC_FLAGS)
 CPPFLAGS = @CPPFLAGS@
 DEFS = @DEFS@
-CGFLAGS = #-g0
 # f2c.h should already be installed in xgcc's include directory but add that
 # to -I anyhow in case not using xgcc.  fio.h is in libI77.  We need config.h
 # from `.'.
-ALL_CFLAGS = -I. -I$(srcdir) -I$(srcdir)/../libI77 -I../../../include $(CPPFLAGS) $(DEFS) $(CFLAGS)
-AR = @AR@
-AR_FLAGS = rc
-RANLIB = @RANLIB@
-RANLIB_TEST = @RANLIB_TEST@
+ALL_CFLAGS = -I. -I$(srcdir) -I$(srcdir)/../libI77 -I.. $(CPPFLAGS) $(DEFS) $(CFLAGS)
 CROSS = @CROSS@
-G77DIR = ../../../
 
 .SUFFIXES:
 .SUFFIXES: .c .o
 
 .c.o:
-	$(CC) -c -DSkip_f2c_Undefs $(ALL_CFLAGS) $(CGFLAGS) $<
+	$(CC) -c -DSkip_f2c_Undefs $(ALL_CFLAGS) $<
 
 OBJS =  VersionU.o gerror_.o perror_.o ierrno_.o itime_.o time_.o \
 	unlink_.o fnum_.o getpid_.o getuid_.o getgid_.o kill_.o rand_.o \
@@ -71,7 +60,7 @@ SRCS =  Version.c gerror_.c perror_.c ierrno_.c itime_.c time_.c \
 	umask_.c sys_clock_.c date_.c second_.c flush1_.c mclock_.c \
 	alarm_.c
 
-F2C_H = ../../../include/f2c.h
+F2C_H = ../f2c.h
 
 all: $(OBJS)
 
@@ -93,7 +82,7 @@ distclean realclean maintainer-clean: clean
 $(OBJS): $(F2C_H) config.h
 
 check:
-	-$(G77DIR)g77 --driver=$(G77DIR)/xgcc -B$(G77DIR) -g $(srcdir)/u77-test.f $(lib) && ./a.out
+	-$(G77DIR)g77 -B$(G77DIR) -g $(srcdir)/u77-test.f $(lib) && ./a.out
 	rm -f a.out
 
 access_.o: access_.c
diff --git a/gcc/f/runtime/libU77/config.h.in b/gcc/f/runtime/libU77/config.h.in
index 4fcffeb..c967b25 100644
--- a/gcc/f/runtime/libU77/config.h.in
+++ b/gcc/f/runtime/libU77/config.h.in
@@ -84,3 +84,20 @@
 /* Define if you have the times function.  */
 #undef HAVE_TIMES
 
+/* Define if you have the getlogin function.  */
+#undef HAVE_GETLOGIN
+
+/* Define if you have the getgid function.  */
+#undef HAVE_GETGID
+
+/* Define if you have the getuid function.  */
+#undef HAVE_GETUID
+
+/* Define if you have the kill function.  */
+#undef HAVE_KILL
+
+/* Define if you have the link function.  */
+#undef HAVE_LINK
+
+/* Define if you have the ttyname function.  */
+#undef HAVE_TTYNAME
diff --git a/gcc/f/runtime/libU77/configure.in b/gcc/f/runtime/libU77/configure.in
index 3cacc9f..6caf4e3 100644
--- a/gcc/f/runtime/libU77/configure.in
+++ b/gcc/f/runtime/libU77/configure.in
@@ -98,7 +98,7 @@ AC_STRUCT_TM
 dnl Checks for library functions.
 
 AC_CHECK_FUNCS(symlink getcwd getwd lstat gethostname strerror clock \
-  getrusage times alarm)
+  getrusage times alarm getlogin getgid getuid kill link ttyname)
 test $ac_cv_func_symlink = yes && MAYBES="$MAYBES symlnk_.o"
 test $ac_cv_func_lstat = yes && MAYBES="$MAYBES lstat_.o"
 test $ac_cv_func_gethostname = yes && MAYBES="$MAYBES hostnm_.o"
diff --git a/gcc/f/runtime/libU77/getgid_.c b/gcc/f/runtime/libU77/getgid_.c
index 02e8a4e..b489bac 100644
--- a/gcc/f/runtime/libU77/getgid_.c
+++ b/gcc/f/runtime/libU77/getgid_.c
@@ -23,6 +23,7 @@ Boston, MA 02111-1307, USA.  */
 #include <unistd.h>
 #endif
 #include <sys/types.h>
+#include <errno.h>		/* for ENOSYS */
 #include "f2c.h"
 
 #ifdef KR_headers
@@ -31,5 +32,10 @@ integer G77_getgid_0 ()
 integer G77_getgid_0 (void)
 #endif
 {
+#if defined (HAVE_GETGID)
   return getgid ();
+#else
+  errno = ENOSYS;
+  return -1;
+#endif
 }
diff --git a/gcc/f/runtime/libU77/getlog_.c b/gcc/f/runtime/libU77/getlog_.c
index 1c2f7db..82cb564 100644
--- a/gcc/f/runtime/libU77/getlog_.c
+++ b/gcc/f/runtime/libU77/getlog_.c
@@ -34,6 +34,7 @@ Boston, MA 02111-1307, USA.  */
 #else
 #  include <strings.h>
 #endif
+#include <errno.h>		/* for ENOSYS */
 #include "f2c.h"
 
 /* getlogin not in svr1-3 */
@@ -51,7 +52,9 @@ extern void s_copy(register char *a, register char *b, ftnlen la, ftnlen lb);
 {
   size_t i;
   char *p;
+  int status;
 
+#if defined (HAVE_GETLOGIN)
   p = getlogin ();
   if (p != NULL) {
     i = strlen (p);
@@ -59,5 +62,10 @@ extern void s_copy(register char *a, register char *b, ftnlen la, ftnlen lb);
   } else {
     s_copy (str, " ", Lstr, 1);
   }
-  return 0;
+  status = 0;
+#else
+  errno = ENOSYS;
+  status = -1;
+#endif
+  return status;
 }
diff --git a/gcc/f/runtime/libU77/getuid_.c b/gcc/f/runtime/libU77/getuid_.c
index 421bb4c..408ff0a 100644
--- a/gcc/f/runtime/libU77/getuid_.c
+++ b/gcc/f/runtime/libU77/getuid_.c
@@ -23,6 +23,7 @@ Boston, MA 02111-1307, USA.  */
 #include <unistd.h>
 #endif
 #include <sys/types.h>
+#include <errno.h>		/* for ENOSYS */
 #include "f2c.h"
 
 #ifdef KR_headers
@@ -31,5 +32,10 @@ integer G77_getuid_0 ()
 integer G77_getuid_0 (void)
 #endif
 {
+#if defined (HAVE_GETUID)
   return getuid ();
+#else
+  errno = ENOSYS;
+  return -1;
+#endif
 }
diff --git a/gcc/f/runtime/libU77/kill_.c b/gcc/f/runtime/libU77/kill_.c
index 32afddf..99197bd 100644
--- a/gcc/f/runtime/libU77/kill_.c
+++ b/gcc/f/runtime/libU77/kill_.c
@@ -33,5 +33,10 @@ integer G77_kill_0 (pid, signum)
 integer G77_kill_0 (const integer *pid, const integer *signum)
 #endif
 {
+#if defined (HAVE_KILL)
   return kill ((pid_t) *pid, *signum) ? errno : 0;
+#else
+  errno = ENOSYS;
+  return -1;
+#endif
 }
diff --git a/gcc/f/runtime/libU77/link_.c b/gcc/f/runtime/libU77/link_.c
index 7a0b51b..003fac8 100644
--- a/gcc/f/runtime/libU77/link_.c
+++ b/gcc/f/runtime/libU77/link_.c
@@ -31,6 +31,7 @@ Boston, MA 02111-1307, USA.  */
 #if HAVE_SYS_PARAM_H
 #  include <sys/param.h>
 #endif
+#include <errno.h>		/* for ENOSYS */
 #include "f2c.h"
 
 #ifdef KR_headers
@@ -44,6 +45,7 @@ void g_char(const char *a, ftnlen alen, char *b);
 integer G77_link_0 (const char *path1, const char *path2, const ftnlen Lpath1, const ftnlen Lpath2)
 #endif
 {
+#if defined (HAVE_LINK)
   char *buff1, *buff2;
   char *bp, *blast;
   int i;
@@ -57,4 +59,8 @@ integer G77_link_0 (const char *path1, const char *path2, const ftnlen Lpath1, c
   i = link (buff1, buff2);
   free (buff1); free (buff2);
   return i ? errno : 0;
+#else /* ! HAVE_LINK */
+  errno = ENOSYS;
+  return -1;
+#endif
 }
diff --git a/gcc/f/runtime/libU77/ttynam_.c b/gcc/f/runtime/libU77/ttynam_.c
index 12b5019..cb1d1e9 100644
--- a/gcc/f/runtime/libU77/ttynam_.c
+++ b/gcc/f/runtime/libU77/ttynam_.c
@@ -32,6 +32,7 @@ Boston, MA 02111-1307, USA.  */
 #else
 #  include <strings.h>
 #endif
+#include <errno.h>		/* for ENOSYS */
 #include "f2c.h"
 
 #ifdef KR_headers
@@ -45,6 +46,7 @@ extern void s_copy(register char *a, register char *b, ftnlen la, ftnlen lb);
 /* Character */ void G77_ttynam_0 (char *ret_val, ftnlen ret_val_len, integer *lunit)
 #endif
 {
+#if defined (HAVE_TTYNAME)
   size_t i;
   char *p;
 
@@ -55,4 +57,8 @@ extern void s_copy(register char *a, register char *b, ftnlen la, ftnlen lb);
   } else {
     s_copy (ret_val, " ", ret_val_len, 1);
   }
+#else
+  errno = ENOSYS;
+  return -1;
+#endif
 }