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Stop S_incline needing to temporarily write a '\0' into its passed-in
[perl5.git] / cflags.SH
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a02608de 1case $PERL_CONFIG_SH in
1c3d792e 2'')
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3 if test -f config.sh; then TOP=.;
4 elif test -f ../config.sh; then TOP=..;
5 elif test -f ../../config.sh; then TOP=../..;
6 elif test -f ../../../config.sh; then TOP=../../..;
7 elif test -f ../../../../config.sh; then TOP=../../../..;
8 else
9 echo "Can't find config.sh."; exit 1
10 fi
11 . $TOP/config.sh
12 ;;
1c3d792e 13esac
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14: This forces SH files to create target in same directory as SH file.
15: This is so that make depend always knows where to find SH derivatives.
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16case "$0" in
17*/*) cd `expr X$0 : 'X\(.*\)/'` ;;
18esac
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19
20warn=''
21
22# Add -Wall for the core modules iff gcc and not already -Wall
23case "$gccversion" in
24'') ;;
25Intel*) ;; # The Intel C++ plays gcc on TV but is not really it.
26*) case "$ccflags" in
27 *-Wall*) ;;
28 *) warn="$warn -Wall" ;;
29 esac
30 ;;
31esac
32
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33# Create a test source file for testing what options can be fed to
34# gcc in this system; include a selection of most common and commonly
35# hairy include files.
36
37cat >_cflags.c <<__EOT__
38#include "EXTERN.h"
39#include "perl.h"
40/* The stdio.h, errno.h, and setjmp.h should be there in any ANSI C89. */
41#include <stdio.h>
42#include <errno.h>
43#include <setjmp.h>
44/* Just in case the inclusion of perl.h did not
45 * pull in enough system headers, let's try again. */
46#ifdef I_STDLIB
47#include <stdlib.h>
48#endif
49#ifdef I_STDDEF
50#include <stddef.h>
51#endif
52#ifdef I_STDARG
53#include <stdarg.h>
54#endif
55#ifdef I_LIMITS
56#include <limits.h>
57#endif
58#ifdef I_DIRENT
59#include <dirent.h>
60#endif
61#ifdef I_UNISTD
62#include <unistd.h>
63#endif
64#ifdef I_SYSTYPES
65#include <sys/types.h>
66#endif
67#ifdef I_SYSPARAM
68#include <sys/param.h>
69#endif
70#ifdef I_SYSRESOURCE
71#include <sys/resource.h>
72#endif
73#ifdef I_SYSSELECT
74#include <sys/select.h>
75#endif
76#if defined(HAS_SOCKET) && !defined(VMS) && !defined(WIN32) /* See perl.h. */
77#include <sys/socket.h>
78#endif
79#ifdef I_SYSSTAT
80#include <sys/stat.h>
81#endif
82#ifdef I_SYSTIME
83#include <sys/time.h>
84#endif
85#ifdef I_SYSTIMES
86#include <sys/times.h>
87#endif
88#ifdef I_SYSWAIT
89#include <sys/wait.h>
90#endif
91/* The gcc -ansi can cause a lot of noise in Solaris because of:
92 /usr/include/sys/resource.h:148: warning: 'struct rlimit64' declared inside parameter list
93 */
94int main(int argc, char *argv[]) {
95
96/* Add here test code found to be problematic in some gcc platform. */
97
98/* Off_t/off_t is a struct in Solaris with largefiles, and with gcc -ansi
99 * that struct cannot be compared in some gcc releases with a flat
100 * integer, such as a STRLEN. */
101
102 Off_t t0a = 2;
103 STRLEN t0b = 3;
104 int t0c = t0a == t0b;
105
106 return 0;
107}
108__EOT__
109
110stdflags=''
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111
112# Further gcc warning options.
113case "$gccversion" in
114'') ;;
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115[12]*) ;; # gcc versions 1 (gasp!) and 2 are not good for this.
116Intel*) ;; # # Is that you, Intel C++?
117*) for opt in -ansi -pedantic -std=c89 -W -Wextra -Wdeclaration-after-statement -Wendif-labels
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118 do
119 case " $ccflags " in
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120 *" $opt "*) ;; # Skip if already there.
121 *) rm -f _cflags$_exe
122 case "`$cc $cflags $opt _cflags.c -o _cflags$_exe 2>&1`" in
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123 *"unrecognized"*) ;;
124 *"Invalid"*) ;;
9ac4c107 125 *"is valid for C"*) ;;
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126 *) if test -x _cflags$_exe
127 then
128 case "$opt" in
129 -std*) stdflags="$stdflags $opt" ;;
130 *) warn="$warn $opt" ;;
131 esac
132 fi
133 ;;
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134 esac
135 ;;
136 esac
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137 done
138 ;;
139esac
a07cd53d 140rm -f _cflags.c _cflags$_exe
bc730b18 141
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142case "$gccversion" in
143'') ;;
144*)
145 # If we have -Duse64bitint (or equivalent) in effect and the quadtype
146 # has become 'long long', gcc -pedantic becomes unbearable (moreso
147 # when combined with -Wall) because long long and LL and %lld|%Ld
148 # become warn-worthy. So let's drop the -pedantic in that case.
149 case "$quadtype:$sPRId64" in
150 "long long"*|*lld*|*Ld*)
151 ccflags="`echo $ccflags|sed 's/-pedantic/ /'`"
152 warn="`echo $warn|sed 's/-pedantic/ /'`"
153 ;;
154 esac
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155 # Using certain features (like the gcc statement expressions)
156 # requires knowing whether -pedantic has been specified.
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157 case "$warn$ccflags" in
158 *-pedantic*) warn="$warn -DPERL_GCC_PEDANTIC" ;;
159 esac
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160 ;;
161esac
b1e55cab 162
10edeb5d 163# Code to set any extra flags here.
a07cd53d 164extra=''
11fcce85 165
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166echo "Extracting cflags (with variable substitutions)"
167: This section of the file will have variable substitutions done on it.
168: Move anything that needs config subs from !NO!SUBS! section to !GROK!THIS!.
169: Protect any dollar signs and backticks that you do not want interpreted
170: by putting a backslash in front. You may delete these comments.
165b7424 171rm -f cflags
2b317908 172$spitshell >cflags <<!GROK!THIS!
ecfc5424 173$startsh
bc730b18 174
11fcce85 175# Extra warnings, used e.g. for gcc.
bc730b18 176warn="$warn"
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177# Extra standardness.
178stdflags="$stdflags"
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179# Extra extra.
180extra="$extra"
bc730b18 181
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182!GROK!THIS!
183
184: In the following dollars and backticks do not need the extra backslash.
185$spitshell >>cflags <<'!NO!SUBS!'
a02608de 186case $PERL_CONFIG_SH in
2b317908 187'')
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188 if test -f config.sh; then TOP=.;
189 elif test -f ../config.sh; then TOP=..;
190 elif test -f ../../config.sh; then TOP=../..;
191 elif test -f ../../../config.sh; then TOP=../../..;
192 elif test -f ../../../../config.sh; then TOP=../../../..;
193 else
194 echo "Can't find config.sh."; exit 1
195 fi
196 . $TOP/config.sh
197 ;;
198esac
199
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200: syntax: cflags [optimize=XXX] [file[.suffix]]
201: displays the compiler command line for file
202
1167a30e 203case "X$1" in
26102cc7 204Xoptimize=*|X"optimize=*")
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205 eval "$1"
206 shift
207 ;;
208esac
209
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210also=': '
211case $# in
2b317908 2121) also='echo 1>&2 " CCCMD = "'
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213esac
214
215case $# in
2160) set *.c; echo "The current C flags are:" ;;
1c3d792e 217esac
2b317908 218
578789a7 219set `echo "$* " | sed -e 's/\.[oc] / /g' -e 's/\.obj / /g' -e "s/\\$obj_ext / /g"`
2b317908 220
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221for file do
222
223 case "$#" in
224 1) ;;
2b317908 225 *) echo $n " $file.c $c" ;;
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226 esac
227
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228 : allow variables like toke_cflags to be evaluated
229
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230 if echo $file | grep -v / >/dev/null
231 then
232 eval 'eval ${'"${file}_cflags"'-""}'
233 fi
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234
235 : or customize here
236
1c3d792e 237 case "$file" in
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238 DB_File) ;;
239 GDBM_File) ;;
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240 NDBM_File) ;;
241 ODBM_File) ;;
242 POSIX) ;;
243 SDBM_File) ;;
244 av) ;;
4b6be2dd 245 byterun) ;;
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246 deb) ;;
247 dl) ;;
2b317908 248 doio) ;;
2304df62 249 doop) ;;
2b317908 250 dump) ;;
59bea8cf 251 globals) ;;
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252 gv) ;;
253 hv) ;;
a6ec74c1 254 locale) ;;
59bea8cf 255 madly) ;;
2304df62 256 main) ;;
2b317908 257 malloc) ;;
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258 mg) ;;
259 miniperlmain) ;;
a6ec74c1 260 numeric) ;;
2304df62 261 op) ;;
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262 opmini) ;;
263 pad) ;;
2b317908 264 perl) ;;
6f4183fe 265 perlapi) ;;
2304df62 266 perlmain) ;;
2b317908 267 perly) ;;
2304df62 268 pp) ;;
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269 pp_ctl) ;;
270 pp_hot) ;;
a6ec74c1 271 pp_pack) ;;
59bea8cf 272 pp_sort) ;;
a0d0e21e 273 pp_sys) ;;
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274 regcomp) ;;
275 regexec) ;;
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276 run) ;;
277 scope) ;;
278 sv) ;;
279 taint) ;;
2b317908 280 toke) ;;
59bea8cf 281 universal) ;;
2b317908 282 usersub) ;;
59bea8cf 283 utf8) ;;
2b317908 284 util) ;;
59bea8cf 285 xsutils) ;;
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286 *) ;;
287 esac
288
666ea192 289case "$cc" in
7e827271 290*g++*)
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291 # Extra paranoia in case people have bad canned ccflags:
292 # bad in the sense that the flags are accepted by g++,
293 # but then whined about.
294 for f in -Wdeclaration-after-statement -std=c89
295 do
296 ccflags="`echo $ccflags|sed 's/$f/ /'`"
297 done
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298 ;;
299esac
300
301case "$cc" in
302*g++*)
303 # Without -Wno-unused-variable g++ 4.x compiles are rather unwatchable
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304 # because of all the warnings about Perl___notused, and g++ doesn't do
305 # __attribute__((unused)) (and even if at some stage it may, people do
306 # have older gcc installations), and ((void)x) isn't enough to silence
307 # the noises about XS functions not using their cv parameter, so we need
308 # the -Wno-unused-parameter too.
309 # Yes, we lose some valid warnings, but hopefully other compilers
310 # (like gcc) will still pick up those warnings.
311 for o in -Wno-unused-variable -Wno-unused-parameter
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312 do
313 case "$warn" in
314 *$o*) ;;
315 *) warn="$warn $o" ;;
316 esac
317 done
318 ;;
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319esac
320
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321if test -f .patch; then
322 ccflags="-DPERL_PATCHNUM=`cat .patch` $ccflags"
323fi
324
c4f23d77 325 : Can we perhaps use $ansi2knr here
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326 echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
327 eval "$also "'"$cc -DPERL_CORE -c $ccflags $stdflags $optimize $warn $extra"'
2b317908 328
a0d0e21e 329 . $TOP/config.sh
2b317908 330
1c3d792e 331done
2b317908 332!NO!SUBS!
a0d0e21e 333chmod 755 cflags
2b317908 334$eunicefix cflags