# hints/os390.sh # # OS/390 hints by David J. Fiander # # OS/390 OpenEdition Release 3 Mon Sep 22 1997 thanks to: # # John Goodyear # John Pfuntner # Len Johnson # Bud Huff # Peter Prymmer # Andy Dougherty # Tim Bunce # # as well as the authors of the aix.sh file # # To get ANSI C, we need to use c89, and ld doesn't exist # You can override this with Configure -Dcc=gcc -Dld=ld. case "$cc" in '') cc='c99' ;; esac case "$ld" in '') ld='c99' ;; esac # -DMAXSIG=39 maximum signal number # -DOEMVS is used in place of #ifdef __MVS__ in certain places. # -D_OE_SOCKETS alters system headers. # -D_XOPEN_SOURCE_EXTENDEDA alters system headers. # c89 hides most of the useful header stuff, _ALL_SOURCE turns it on again. # YYDYNAMIC ensures that the OS/390 yacc generated parser is reentrant. # -DEBCDIC should come from Configure and need not be mentioned here. # Prepend your favorites with Configure -Dccflags=your_favorites def_os390_cflags='-qlanglvl=extended:extc89:extc99 -qlongname -qxplink -qdll -qfloat=ieee -qexportall -qhaltonmsg=3296:4108' def_os390_cflags="$def_os390_cflags -Wc,XPLINK,dll,EXPORTALL -Wl,XPLINK,dll" def_os390_defs='-DMAXSIG=39 -DOEMVS -D_OE_SOCKETS -D_XOPEN_SOURCE_EXTENDED -D_ALL_SOURCE -DYYDYNAMIC -D_POSIX_SOURCE=1' case "$ccflags" in '') ccflags="$def_os390_cflags $def_os390_defs" ;; *) ccflags="$ccflags $def_os390_cflags $def_os390_defs" ;; esac # Turning on optimization breaks perl. # You can override this with Configure -Doptimize='-O' or somesuch. case "$optimize" in '') optimize='none' ;; esac # To link via definition side decks we need the dll option # You can override this with Configure -Ucccdlflags or somesuch. case "$cccdlflags" in '') cccdlflags='-qxplink -qdll -qexportall -Wc,XPLINK,dll,EXPORTALL -Wl,XPLINK,dll' ;; esac case "$so" in '') so='a' ;; esac case "$alignbytes" in '') alignbytes=8 ;; esac case "$usemymalloc" in '') usemymalloc='n' ;; esac # On OS/390, libc.a doesn't really hold anything at all, # so running nm on it is pretty useless. # You can override this with Configure -Dusenm. case "$usenm" in '') usenm='false' ;; esac # Setting ldflags='-Wl,EDIT=NO' will get rid of the symbol # information at the end of the executable (=> smaller binaries). # Override this option with -Dldflags='whatever else you wanted'. case "$ldflags" in '') ldflags='-qxplink -qdll -Wl,XPLINK,dll' ;; esac case "$optimize" in *-g*) ;; *) ldflags="$ldflags -Wl,EDIT=NO" esac # In order to build with dynamic be sure to specify: # Configure -Dusedl # Do not forget to add $archlibexp/CORE to your LIBPATH. # You might want to override some of this with things like: # Configure -Dusedl -Ddlext=so -Ddlsrc=dl_dllload.xs. case "$usedl" in '') usedl='n' case "$dlext" in '') dlext='none' ;; esac ;; define) case "$useshrplib" in '') useshrplib='true' ;; esac case "$dlsrc" in '') dlsrc='dl_dllload.xs' ;; esac # For performance use 'so' at or beyond v2.8, 'dll' for 2.7 and prior versions case "`uname -v`x`uname -r`" in 02x0[89].*|02x1[0-9].*|[0-9][3-9]x*) so='so' case "$dlext" in '') dlext='so' ;; esac ;; *) so='dll' case "$dlext" in '') dlext='dll' ;; esac ;; esac libperl="libperl.$so" ccflags="$ccflags -D_SHR_ENVIRON -DPERL_EXTERNAL_GLOB -qexportall -qdll -qxplink" cccdlflags='-c -qexportall -qxplink -qdll -Wc,XPLINK,dll,EXPORTALL -Wl,XPLINK,dll' # The following will need to be modified for the installed libperl.x. # The modification to Config.pm is done by the installperl script after the build and test. ccdlflags="-qxplink -qdll -Wl,XPLINK,dll `pwd`/libperl.x" lddlflags="-qxplink -qdll -Wl,XPLINK,dll `pwd`/libperl.x" ;; esac # even on static builds using LIBPATH should be OK. case "$ldlibpthname" in '') ldlibpthname=LIBPATH ;; esac # The following should always be used d_oldpthreads='define' # Header files to include. # You can override these with Configure -Ui_time -Ui_systime -Dd_pthread_atfork. case "$i_time" in '') i_time='define' ;; esac case "$i_systime" in '') i_systime='define' ;; esac case "$d_pthread_atfork" in '') d_pthread_atfork='undef' ;; esac case "$d_pthread_atfork" in '') d_pthread_atfork='undef' ;; esac # (from aix.sh) # uname -m output is too specific and not appropriate here # osname should come from Configure # You can override this with Configure -Darchname='s390' but please don't. case "$archname" in '') archname="$osname" ;; esac # We have our own cppstdin script. This is not a variable since # Configure sees the presence of the script file. # We put system header -D definitions in so that Configure # can find the shmat() prototype in and various # other things. Unfortunately, cppflags occurs too late to be of # value external to the script. This may need to be revisited # under a compiler other than c89. case "$usedl" in define) echo 'cat >.$$.c; '"$cc"' -D_OE_SOCKETS -D_XOPEN_SOURCE_EXTENDED -D_ALL_SOURCE -D_SHR_ENVIRON -E -Wc,"LANGLVL(DOLLARINNAMES)",NOLOC ${1+"$@"} .$$.c | fgrep -v "??="; rm .$$.c' > cppstdin ;; *) echo 'cat >.$$.c; '"$cc"' -D_OE_SOCKETS -D_XOPEN_SOURCE_EXTENDED -D_ALL_SOURCE -E -Wc,"LANGLVL(DOLLARINNAMES)",NOLOC ${1+"$@"} .$$.c | fgrep -v "??="; rm .$$.c' > cppstdin ;; esac # # Note that Makefile.SH employs a bare yacc command to generate # perly.[hc], hence you may wish to: # # alias yacc='myyacc' # # Then if you would like to use myyacc and skip past the # following warnings try invoking Configure like so: # # sh Configure -Dbyacc=yacc # # This trick ought to work even if your yacc is byacc. # if test "X$byacc" = "Xbyacc" ; then if test -e /etc/yyparse.c ; then : we should be OK - perhaps do a test -r? else cat <&4 Warning. You do not have a copy of yyparse.c, the default yacc parser template file, in place in /etc. EOWARN if test -e /samples/yyparse.c ; then cat <&4 There does appear to be a template file in /samples though. Please run: cp /samples/yyparse.c /etc before attempting to Configure the build of $package. EOWARN else cat <&4 There does not appear to be one in /samples either. If you feel you can make use of an alternate yacc-like parser generator then please read the comments in the hints/os390.sh file carefully. EOWARN fi exit 1 fi fi # Most of the time gcvt() seems to work fine but # sometimes values like 0.1, 0.2, come out as "10", "20", # a trivial Perl demonstration snippet is 'print 0.1'. # The -W 0,float(ieee) seems to be the switch breaking gcvt(). # sprintf() seems to get things right(er). gconvert_preference=sprintf # Configure gets these wrong for some reason. d_gethostbyaddr_r='undef' d_gethostbyname_r='undef' d_gethostent_r='undef' # The z/OS C compiler supports the attribute keyword, but in a # limited manner. # # Ideally, Configure's tests should test the attributes as they are expected # to be used in perl, and, ideally, those tests would fail on z/OS. # Until then, just tell Configure to ignore the attributes. Currently, # Configure thinks attributes are supported because it does not recognize # warning messages like this: # # INFORMATIONAL CCN4108 ./proto.h:4534  The use of keyword '__attribute__' is non-portable. d_attribute_deprecated='undef' d_attribute_format='undef' d_attribute_malloc='undef' d_attribute_nonnull='undef' d_attribute_noreturn='undef' d_attribute_pure='undef' d_attribute_unused='undef' d_attribute_warn_unused_result='undef' # nan() is in libm but doesn't work as expected: nan("") or nan("0") # returns zero, not a nan: # http://www-01.ibm.com/support/knowledgecenter/SSLTBW_1.12.0/com.ibm.zos.r12.bpxbd00/nan.htm%23nan?lang=en # contrast with e.g. # http://www.cplusplus.com/reference/cmath/nan-function/ # (C++ but C99 math agrees) # XXX: Configure scan for proper behavior d_nan='undef' # Configures says this exists, but it doesn't work properly. See # <54DCE073.4010100@khwilliamson.com> d_dir_dd_fd='undef'