Correct two subtle typos.

[perl5.git] / hints / sunos_4_1.sh

diff --git a/hints/sunos_4_1.sh b/hints/sunos_4_1.sh
index 21c5d3b..fa0499b 100644 (file)
--- a/hints/sunos_4_1.sh
+++ b/hints/sunos_4_1.sh
@@ -1,6 +1,6 @@
 # hints/sunos_4_1.sh
-# Last modified:  Thu Feb  8 11:46:05 EST 1996
-# Andy Dougherty  <doughera@lafcol.lafayette.edu>
+# Last modified:  Wed May 27 11:00:02 EDT 1998
+# Andy Dougherty  <doughera@lafayette.edu>
 
 case "$cc" in
 *gcc*) usevfork=false 
@@ -9,14 +9,12 @@ case "$cc" in
 *)     usevfork=true ;;
 esac
 
-# Configure will issue a WHOA warning.  The problem is that
 # Configure finds getzname, not tzname.  If you're in the System V
 # environment, you can set d_tzname='define' since tzname[] is
 # available in the System V environment.
 d_tzname='undef'
 
-# Configure will issue a WHOA warning.  The problem is that unistd.h
-# contains incorrect prototypes for some functions in the usual
+# unistd.h contains incorrect prototypes for some functions in the usual
 # BSD-ish environment.  In particular, it has
 # extern int   getgroups(/* int gidsetsize, gid_t grouplist[] */);
 # but groupslist[] ought to be of type int, not gid_t.
@@ -25,25 +23,64 @@ d_tzname='undef'
 # The gcc fix-includes script exposes those incorrect prototypes.
 # There may be other examples as well.  Volunteers are welcome to
 # track them all down :-).  In the meantime, we'll just skip unistd.h
-# for SunOS.
+# for SunOS in most of the code.   
+# However, see ext/POSIX/hints/sunos_4.pl for one exception.
 i_unistd='undef'
+# See util.c for another:  We need _SC_OPEN_MAX, which is in
+# <unistd.h>.
 
-cat << 'EOM' >&4
+# fflush(NULL) will core dump on SunOS 4.1.3.  In util.c we'll
+# try explicitly fflushing all open files.  Unfortunately,
+# on my SunOS 4.1.3 system, sysconf(_SC_OPEN_MAX) returns
+# 64, but only 32 of those file pointers can be accessed 
+# directly by _iob[i].  The remainder are off in dynamically
+# allocated memory somewhere and I don't know to automatically
+# fflush() them.  -- Andy Dougherty  Wed May 26 15:25:22 EDT 1999
+util_cflags='ccflags="$ccflags -DPERL_FFLUSH_ALL_FOPEN_MAX=32"'
 
-You will probably see  *** WHOA THERE!!! ***  messages from Configure for
-d_tzname and i_unistd.  Keep the recommended values.  See
-hints/sunos_4_1.sh for more information.
-EOM
-
-# SunOS 4.1.3 has two extra fields in struct tm.  This works around
-# the problem.  Other BSD platforms may have similar problems.
-POSIX_cflags='ccflags="$ccflags -DSTRUCT_TM_HASZONE"'
-
-# check if user is in a bsd or system 5 type environment
+# The correct setting of groupstype depends on which version of the C
+# library is used.  If you are in the 'System V environment'
+# (i.e. you have /usr/5bin ahead of /usr/bin in your PATH), and
+# you use Sun's cc compiler, then you'll pick up /usr/5bin/cc, which
+# links against the C library in /usr/5lib.  This library has
+# groupstype='gid_t'.
+# If you are in the normal BSDish environment, then you'll pick up
+# /usr/ucb/cc, which links against the C library in /usr/lib.  That
+# library has groupstype='int'.
+#
+# If you are using gcc, it links against the C library in /usr/lib
+# independent of whether or not you are in the 'System V environment'.
+# If you want to use the System V libraries, then you need to 
+# manually set groupstype='gid_t' and add explicit references to 
+# /usr/5lib when Configure prompts you for where to look for libraries.
+#
+# Check if user is in a bsd or system 5 type environment
 if cat -b /dev/null 2>/dev/null
 then # bsd
       groupstype='int'
 else # sys5
-      groupstype='gid_t'
+    case "$cc" in
+       *gcc*) groupstype='int';; # gcc doesn't do anything special
+       *) groupstype='gid_t';; # /usr/5bin/cc pulls in /usr/5lib/ stuff.
+    esac
 fi
- 
+
+# If you get the message "unresolved symbol '__lib_version' " while
+# linking, your system probably has the optional 'acc' compiler (and
+# libraries) installed, but you are using the bundled 'cc' compiler with
+# the unbundled libraries.  The solution is either to use 'acc' and the
+# unbundled libraries (specifically /lib/libm.a), or 'cc' and the bundled
+# library.
+# 
+# Thanks to William Setzer <William_Setzer@ncsu.edu> for this info.
+
+# Don't use the GNU ld, that doesn't work, you'll get a lot of
+# relocation truncated to fit: BASE13 ...
+# from many extensions, like B and Data::Dumper.
+ld=/usr/bin/ld
+
+# As of Perl 5.8.1 it seems that dynaloading is broken in SunOS 4.x, sniff.
+case "$usedl" in
+'') usedl=undef ;;
+esac
+