hints/netbsd.sh

   1 # hints/netbsd.sh
   2 #
   3 # Please check with packages@netbsd.org before making modifications
   4 # to this file.
   5
   6 case "$archname" in
   7 '')
   8     archname=`uname -m`-${osname}
   9     ;;
  10 esac
  11
  12 # NetBSD keeps dynamic loading dl*() functions in /usr/lib/crt0.o,
  13 # so Configure doesn't find them (unless you abandon the nm scan).
  14 # Also, NetBSD 0.9a was the first release to introduce shared
  15 # libraries.
  16 #
  17 case "$osvers" in
  18 0.9|0.8*)
  19         usedl="$undef"
  20         ;;
  21 *)
  22         case `uname -m` in
  23         pmax)
  24                 # NetBSD 1.3 and 1.3.1 on pmax shipped an `old' ld.so,
  25                 # which will not work.
  26                 case "$osvers" in
  27                 1.3|1.3.1)
  28                         d_dlopen=$undef
  29                         ;;
  30                 esac
  31                 ;;
  32         esac
  33         if test -f /usr/libexec/ld.elf_so; then
  34                 # ELF
  35                 d_dlopen=$define
  36                 d_dlerror=$define
  37                 cccdlflags="-DPIC -fPIC $cccdlflags"
  38                 lddlflags="-shared $lddlflags"
  39                 cat >UU/cc.cbu <<'EOCBU'
  40 # gcc 4.6 doesn't support --whole-archive, but it's required for the
  41 # system gcc to build correctly, so check for it
  42 echo 'int f(void) { return 0; }' >try.c
  43 if ${cc:-cc} $cccdlflags -c try.c -otry.o 2>&1 &&
  44    ${cc:-cc} --whole-archive $lddlflags try.o -otry.so 2>&1 ; then
  45     lddlflags="--whole-archive $lddlflags"
  46 fi
  47 rm try.c try.o try.so 2>/dev/null
  48 EOCBU
  49                 rpathflag="-Wl,-rpath,"
  50                 case "$osvers" in
  51                 1.[0-5]*)
  52                         #
  53                         # Include the whole libgcc.a into the perl executable
  54                         # so that certain symbols needed by loadable modules
  55                         # built as C++ objects (__eh_alloc, __pure_virtual,
  56                         # etc.) will always be defined.
  57                         #
  58                         ccdlflags="-Wl,-whole-archive -lgcc \
  59                                 -Wl,-no-whole-archive -Wl,-E $ccdlflags"
  60                         ;;
  61                 *)
  62                         ccdlflags="-Wl,-E $ccdlflags"
  63                         ;;
  64                 esac
  65         elif test -f /usr/libexec/ld.so; then
  66                 # a.out
  67                 d_dlopen=$define
  68                 d_dlerror=$define
  69                 cccdlflags="-DPIC -fPIC $cccdlflags"
  70                 lddlflags="-Bshareable $lddlflags"
  71                 rpathflag="-R"
  72         else
  73                 d_dlopen=$undef
  74                 rpathflag=
  75         fi
  76         ;;
  77 esac
  78
  79 # netbsd had these but they don't really work as advertised, in the
  80 # versions listed below.  if they are defined, then there isn't a
  81 # way to make perl call setuid() or setgid().  if they aren't, then
  82 # ($<, $>) = ($u, $u); will work (same for $(/$)).  this is because
  83 # you can not change the real userid of a process under 4.4BSD.
  84 # netbsd fixed this in 1.3.2.
  85 case "$osvers" in
  86 0.9*|1.[012]*|1.3|1.3.1)
  87         d_setregid="$undef"
  88         d_setreuid="$undef"
  89         ;;
  90 esac
  91 case "$osvers" in
  92 0.8*)
  93         ;;
  94 *)
  95         d_getprotoent_r="$undef"
  96         d_getprotobyname_r="$undef"
  97         d_getprotobynumber_r="$undef"
  98         d_setprotoent_r="$undef"
  99         d_endprotoent_r="$undef"
 100         d_getservent_r="$undef"
 101         d_getservbyname_r="$undef"
 102         d_getservbyport_r="$undef"
 103         d_setservent_r="$undef"
 104         d_endservent_r="$undef"
 105         d_gethostbyname_r="$undef"
 106         d_gethostbyaddr2_r="$undef"
 107         d_gethostbyaddr_r="$undef"
 108         d_sethostent_r="$undef"
 109         d_gethostent_r="$undef"
 110         d_endhostent_r="$undef"
 111         d_getprotoent_r_proto="0"
 112         d_getprotobyname_r_proto="0"
 113         d_getprotobynumber_r_proto="0"
 114         d_setprotoent_r_proto="0"
 115         d_endprotoent_r_proto="0"
 116         d_getservent_r_proto="0"
 117         d_getservbyname_r_proto="0"
 118         d_getservbyport_r_proto="0"
 119         d_setservent_r_proto="0"
 120         d_endservent_r_proto="0"
 121         d_gethostbyname_r_proto="0"
 122         d_gethostbyaddr2_r_proto="0"
 123         d_gethostbyaddr_r_proto="0"
 124         d_sethostent_r_proto="0"
 125         d_endhostent_r_proto="0"
 126         d_gethostent_r_proto="0"
 127         ;;
 128 esac
 129
 130 # These are obsolete in any netbsd.
 131 d_setrgid="$undef"
 132 d_setruid="$undef"
 133
 134 # there's no problem with vfork.
 135 usevfork=true
 136
 137 # This is there but in machine/ieeefp_h.
 138 ieeefp_h="define"
 139
 140 # This script UU/usethreads.cbu will get 'called-back' by Configure
 141 # after it has prompted the user for whether to use threads.
 142 cat > UU/usethreads.cbu <<'EOCBU'
 143 case "$usethreads" in
 144 $define|true|[yY]*)
 145         lpthread=
 146         for xxx in pthread; do
 147                 for yyy in $loclibpth $plibpth $glibpth dummy; do
 148                         zzz=$yyy/lib$xxx.a
 149                         if test -f "$zzz"; then
 150                                 lpthread=$xxx
 151                                 break;
 152                         fi
 153                         zzz=$yyy/lib$xxx.so
 154                         if test -f "$zzz"; then
 155                                 lpthread=$xxx
 156                                 break;
 157                         fi
 158                         zzz=`ls $yyy/lib$xxx.so.* 2>/dev/null`
 159                         if test "X$zzz" != X; then
 160                                 lpthread=$xxx
 161                                 break;
 162                         fi
 163                 done
 164                 if test "X$lpthread" != X; then
 165                         break;
 166                 fi
 167         done
 168         if test "X$lpthread" != X; then
 169                 # Add -lpthread.
 170                 libswanted="$libswanted $lpthread"
 171                 # There is no libc_r as of NetBSD 1.5.2, so no c -> c_r.
 172                 # This will be revisited when NetBSD gains a native pthreads
 173                 # implementation.
 174         else
 175                 echo "$0: No POSIX threads library (-lpthread) found.  " \
 176                      "You may want to install GNU pth.  Aborting." >&4
 177                 exit 1
 178         fi
 179         unset lpthread
 180
 181         # several reentrant functions are embedded in libc, but haven't
 182         # been added to the header files yet.  Let's hold off on using
 183         # them until they are a valid part of the API
 184         case "$osvers" in
 185         [012].*|3.[0-1])
 186                 d_getprotobyname_r=$undef
 187                 d_getprotobynumber_r=$undef
 188                 d_getprotoent_r=$undef
 189                 d_getservbyname_r=$undef
 190                 d_getservbyport_r=$undef
 191                 d_getservent_r=$undef
 192                 d_setprotoent_r=$undef
 193                 d_setservent_r=$undef
 194                 d_endprotoent_r=$undef
 195                 d_endservent_r=$undef ;;
 196         esac
 197         ;;
 198
 199 esac
 200 EOCBU
 201
 202 # Set sensible defaults for NetBSD: look for local software in
 203 # /usr/pkg (NetBSD Packages Collection) and in /usr/local.
 204 #
 205 loclibpth="/usr/pkg/lib /usr/local/lib"
 206 locincpth="/usr/pkg/include /usr/local/include"
 207 case "$rpathflag" in
 208 '')
 209         ldflags=
 210         ;;
 211 *)
 212         ldflags=
 213         for yyy in $loclibpth; do
 214                 ldflags="$ldflags $rpathflag$yyy"
 215         done
 216         ;;
 217 esac
 218
 219 case `uname -m` in
 220 alpha)
 221     echo 'int main() {}' > try.c
 222     gcc=`${cc:-cc} -v -c try.c 2>&1|grep 'gcc version egcs-2'`
 223     case "$gcc" in
 224     '' | "gcc version egcs-2.95."[3-9]*) ;; # 2.95.3 or better okay
 225     *)  cat >&4 <<EOF
 226 ***
 227 *** Your gcc ($gcc) is known to be
 228 *** too buggy on netbsd/alpha to compile Perl with optimization.
 229 *** It is suggested you install the lang/gcc package which should
 230 *** have at least gcc 2.95.3 which should work okay: use for example
 231 *** Configure -Dcc=/usr/pkg/gcc-2.95.3/bin/cc.  You could also
 232 *** Configure -Doptimize=-O0 to compile Perl without any optimization
 233 *** but that is not recommended.
 234 ***
 235 EOF
 236         exit 1
 237         ;;
 238     esac
 239     rm -f try.*
 240     ;;
 241 esac
 242
 243 # NetBSD/sparc 1.5.3/1.6.1 dumps core in the semid_ds test of Configure.
 244 case `uname -m` in
 245 sparc) d_semctl_semid_ds=undef ;;
 246 esac
 247
 248 # malloc wrap works
 249 case "$usemallocwrap" in
 250 '') usemallocwrap='define' ;;
 251 esac
 252
 253 # don't use perl malloc by default
 254 case "$usemymalloc" in
 255 '') usemymalloc=n ;;
 256 esac
 257
 258 # NetBSD 6 defines the *at() functions in libc, but either doesn't
 259 # implement them, or implements them only for AT_FDCWD
 260 case "$osver" in
 261 [1-6].*)
 262         d_unlinkat="$undef"
 263         d_renameat="$undef"
 264         d_linkat="$undef"
 265         d_fchmodat="$undef"
 266         ;;
 267 esac
 268
 269 cat >UU/uselongdouble.cbu <<'EOCBU'
 270 # This script UU/uselongdouble.cbu will get 'called-back' by Configure
 271 # after it has prompted the user for whether to use long doubles.
 272 #
 273 # See https://github.com/Perl/perl5/issues/17853 and https://github.com/Perl/perl5/issues/17854
 274 case "$uselongdouble" in
 275 $define|true|[yY]*)
 276     cat >try.c <<\TRY
 277 #include <stdio.h>
 278 #include <math.h>
 279
 280 long double x = 1.0;
 281
 282 int main(int argc, char **argv) {
 283     double e1 = exp(1.0);
 284     /* as of NetBSD 9.0 expl() just calls exp(),
 285        Fail here if they're equal. */
 286     return expl(x) == (long double)e1;
 287 }
 288 TRY
 289     if $cc -o try $ccflags $ldflags try.c -lm && $run ./try; then
 290         echo "NetBSD seem to have fixed expl (and hopefully more)" >&4
 291     else
 292         cat <<EOM >&4
 293
 294 Warning! NetBSD's long double support is limited enough that it will cause
 295 test failures, and possibly build failures, and this doesn't appear to have
 296 been fixed in the release you're running.
 297
 298 EOM
 299     fi
 300 ;;
 301 esac
 302 EOCBU