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hints/os390.sh: z/OS long long support
[perl5.git] / hints / os390.sh
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86339dc9 1# hints/os390.sh
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2#
3# OS/390 hints by David J. Fiander <davidf@mks.com>
4#
86339dc9 5# OS/390 OpenEdition Release 3 Mon Sep 22 1997 thanks to:
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6#
7# John Goodyear <johngood@us.ibm.com>
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8# John Pfuntner <pfuntner@vnet.ibm.com>
9# Len Johnson <lenjay@ibm.net>
10# Bud Huff <BAHUFF@us.oracle.com>
11# Peter Prymmer <pvhp@forte.com>
1973dd96 12# Andy Dougherty <doughera@lafayette.edu>
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13# Tim Bunce <Tim.Bunce@ig.co.uk>
14#
15# as well as the authors of the aix.sh file
16#
17
9d116dd7 18# To get ANSI C, we need to use c89, and ld doesn't exist
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19# You can override this with Configure -Dcc=gcc -Dld=ld.
20case "$cc" in
21'') cc='c89' ;;
22esac
23case "$ld" in
24'') ld='c89' ;;
25esac
26
4144573e 27# -DMAXSIG=39 maximum signal number
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28# -DOEMVS is used in place of #ifdef __MVS__ in certain places.
29# -D_OE_SOCKETS alters system headers.
30# -D_XOPEN_SOURCE_EXTENDEDA alters system headers.
31# c89 hides most of the useful header stuff, _ALL_SOURCE turns it on again.
9d116dd7 32# YYDYNAMIC ensures that the OS/390 yacc generated parser is reentrant.
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33# -DEBCDIC should come from Configure and need not be mentioned here.
34# Prepend your favorites with Configure -Dccflags=your_favorites
35case "$ccflags" in
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36'') ccflags='-2 -Wc,XPLINK -DMAXSIG=39 -DOEMVS -D_OE_SOCKETS -D_XOPEN_SOURCE_EXTENDED -D_ALL_SOURCE -DYYDYNAMIC' ;;
37*) ccflags="$ccflags -2 -Wc,XPLINK -DMAXSIG=39 -DOEMVS -D_OE_SOCKETS -D_XOPEN_SOURCE_EXTENDED -D_ALL_SOURCE -DYYDYNAMIC" ;;
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38esac
39
40# Turning on optimization breaks perl.
41# You can override this with Configure -Doptimize='-O' or somesuch.
42case "$optimize" in
43'') optimize='none' ;;
44esac
45
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46# To link via definition side decks we need the dll option
47# You can override this with Configure -Ucccdlflags or somesuch.
48case "$cccdlflags" in
ac9901e0 49'') cccdlflags='-W 0,dll' ;;
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50esac
51
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52case "$so" in
53'') so='a' ;;
54esac
9d116dd7 55
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56case "$alignbytes" in
57'') alignbytes=8 ;;
58esac
9d116dd7 59
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60case "$usemymalloc" in
61'') usemymalloc='n' ;;
62esac
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63
64# On OS/390, libc.a doesn't really hold anything at all,
65# so running nm on it is pretty useless.
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66# You can override this with Configure -Dusenm.
67case "$usenm" in
68'') usenm='false' ;;
69esac
9d116dd7 70
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71# Setting ldflags='-Wl,EDIT=NO' will get rid of the symbol
72# information at the end of the executable (=> smaller binaries).
73# Override this option with -Dldflags='whatever else you wanted'.
74case "$ldflags" in
4144573e 75'') ldflags='-Wl,EDIT=NO -Wl,XPLINK,dll' ;;
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76esac
77
78# In order to build with dynamic be sure to specify:
79# Configure -Dusedl
80# Do not forget to add $archlibexp/CORE to your LIBPATH.
81# You might want to override some of this with things like:
ac9901e0 82# Configure -Dusedl -Ddlext=so -Ddlsrc=dl_dllload.xs.
5f912e1c 83case "$usedl" in
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84'')
85 usedl='n'
86 case "$dlext" in
87 '') dlext='none' ;;
88 esac
89 ;;
90define)
91 case "$useshrplib" in
92 '') useshrplib='true' ;;
93 esac
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94 case "$dlsrc" in
95 '') dlsrc='dl_dllload.xs' ;;
96 esac
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97 # For performance use 'so' at or beyond v2.8, 'dll' for 2.7 and prior versions
98 case "`uname -v`x`uname -r`" in
99 02x0[89].*|02x1[0-9].*|[0-9][3-9]x*)
100 so='so'
101 case "$dlext" in
102 '') dlext='so' ;;
103 esac
104 ;;
105 *)
106 so='dll'
107 case "$dlext" in
108 '') dlext='dll' ;;
109 esac
110 ;;
111 esac
112 libperl="libperl.$so"
ac9901e0 113 ccflags="$ccflags -D_SHR_ENVIRON -DPERL_EXTERNAL_GLOB -Wc,dll"
4144573e 114 cccdlflags='-c -Wc,XPLINK,dll,EXPORTALL'
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115 # The following will need to be modified for the installed libperl.x.
116 # The modification to Config.pm is done by the installperl script after the build and test.
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117 ccdlflags="-W l,XPLINK,dll `pwd`/libperl.x"
118 lddlflags="-W l,XPLINK,dll `pwd`/libperl.x"
ac9901e0 119 ;;
5f912e1c 120esac
ac9901e0 121# even on static builds using LIBPATH should be OK.
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122case "$ldlibpthname" in
123'') ldlibpthname=LIBPATH ;;
124esac
9d116dd7 125
dca46f05 126# The following should always be used
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127d_oldpthreads='define'
128
5f912e1c 129# Header files to include.
20b634c2 130# You can override these with Configure -Ui_time -Ui_systime -Dd_pthread_atfork.
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131case "$i_time" in
132'') i_time='define' ;;
133esac
134case "$i_systime" in
135'') i_systime='define' ;;
136esac
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137case "$d_pthread_atfork" in
138'') d_pthread_atfork='undef' ;;
139esac
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140case "$d_pthread_atfork" in
141'') d_pthread_atfork='undef' ;;
142esac
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143
144# (from aix.sh)
145# uname -m output is too specific and not appropriate here
9d116dd7 146# osname should come from Configure
5f912e1c 147# You can override this with Configure -Darchname='s390' but please don't.
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148case "$archname" in
149'') archname="$osname" ;;
150esac
151
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152# We have our own cppstdin script. This is not a variable since
153# Configure sees the presence of the script file.
154# We put system header -D definitions in so that Configure
155# can find the shmat() prototype in <sys/shm.h> and various
156# other things. Unfortunately, cppflags occurs too late to be of
157# value external to the script. This may need to be revisited
158# under a compiler other than c89.
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159case "$usedl" in
160define)
a4c2c75a 161echo '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 .$$.c' > cppstdin
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162 ;;
163*)
a4c2c75a 164echo 'cat >.$$.c; '"$cc"' -D_OE_SOCKETS -D_XOPEN_SOURCE_EXTENDED -D_ALL_SOURCE -E -Wc,"LANGLVL(DOLLARINNAMES)",NOLOC ${1+"$@"} .$$.c | fgrep -v "??="; rm .$$.c' > cppstdin
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165 ;;
166esac
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167
168#
5f912e1c 169# Note that Makefile.SH employs a bare yacc command to generate
c67aee7a 170# perly.[hc], hence you may wish to:
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171#
172# alias yacc='myyacc'
173#
174# Then if you would like to use myyacc and skip past the
175# following warnings try invoking Configure like so:
176#
177# sh Configure -Dbyacc=yacc
178#
179# This trick ought to work even if your yacc is byacc.
180#
181if test "X$byacc" = "Xbyacc" ; then
182 if test -e /etc/yyparse.c ; then
183 : we should be OK - perhaps do a test -r?
184 else
185 cat <<EOWARN >&4
186
187Warning. You do not have a copy of yyparse.c, the default
188yacc parser template file, in place in /etc.
189EOWARN
190 if test -e /samples/yyparse.c ; then
191 cat <<EOWARN >&4
192
193There does appear to be a template file in /samples though.
194Please run:
195
196 cp /samples/yyparse.c /etc
197
198before attempting to Configure the build of $package.
199
200EOWARN
201 else
202 cat <<EOWARN >&4
203
204There does not appear to be one in /samples either.
205If you feel you can make use of an alternate yacc-like
206parser generator then please read the comments in the
207hints/os390.sh file carefully.
208
209EOWARN
210 fi
211 exit 1
212 fi
213fi
214
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215# Most of the time gcvt() seems to work fine but
216# sometimes values like 0.1, 0.2, come out as "10", "20",
217# a trivial Perl demonstration snippet is 'print 0.1'.
1f361dc9 218# The -W 0,float(ieee) seems to be the switch breaking gcvt().
eecdb66e 219# sprintf() seems to get things right(er).
aade5aff 220gconvert_preference=sprintf
eecdb66e 221
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222cat >config.arch<<'__CONFIG_ARCH__'
223# The '-W 0,float(ieee)' cannot be used during Configure as ldflags.
224
c68fc1f1 225ccflags="$ccflags -W 0,float(ieee) -W 0,LANGLVL(LONGLONG)"
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226
227__CONFIG_ARCH__
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228
229# Configure gets these wrong for some reason.
230d_gethostbyaddr_r='undef'
231d_gethostbyname_r='undef'
232d_gethostent_r='undef'
233
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234# The z/OS C compiler compiler supports the attribute keyword, but in a
235# limited manner.
236#
237# Ideally, Configure's tests should test the attributes as they are expected
238# to be used in perl, and, ideally, those tests would fail on z/OS.
239# Until then, just tell Configure to ignore the attributes. Currently,
240# Configure thinks attributes are supported because it does not recognize
241# warning messages like this:
242#
243# INFORMATIONAL CCN4108 ./proto.h:4534  The use of keyword '__attribute__' is non-portable.
244
245d_attribute_deprecated='undef'
246d_attribute_format='undef'
247d_attribute_malloc='undef'
248d_attribute_nonnull='undef'
249d_attribute_noreturn='undef'
250d_attribute_pure='undef'
251d_attribute_unused='undef'
252d_attribute_warn_unused_result='undef'
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253
254# nan() is in libm but doesn't work as expected: nan("") or nan("0")
255# returns zero, not a nan:
256# http://www-01.ibm.com/support/knowledgecenter/SSLTBW_1.12.0/com.ibm.zos.r12.bpxbd00/nan.htm%23nan?lang=en
257# contrast with e.g.
258# http://www.cplusplus.com/reference/cmath/nan-function/
259# (C++ but C99 math agrees)
260# XXX: Configure scan for proper behavior
261d_nan='undef'