source: vendor/perl/5.8.8/hints/openbsd.sh

# hints/openbsd.sh
#
# hints file for OpenBSD; Todd Miller <millert@openbsd.org>
# Edited to allow Configure command-line overrides by
#  Andy Dougherty <doughera@lafayette.edu>
#
# To build with distribution paths, use:
#       ./Configure -des -Dopenbsd_distribution=defined
#

# OpenBSD has a better malloc than perl...
test "$usemymalloc" || usemymalloc='n'

# malloc wrap works
case "$usemallocwrap" in
'') usemallocwrap='define' ;;
esac

# Currently, vfork(2) is not a real win over fork(2).
usevfork="$undef"

# In OpenBSD < 3.3, the setre?[ug]id() are emulated using the
# _POSIX_SAVED_IDS functionality which does not have the same
# semantics as 4.3BSD.  Starting with OpenBSD 3.3, the original
# semantics have been restored.
case "$osvers" in
[0-2].*|3.[0-2])
        d_setregid=$undef
        d_setreuid=$undef
        d_setrgid=$undef
        d_setruid=$undef
esac

#
# Not all platforms support dynamic loading...
# For the case of "$openbsd_distribution", the hints file
# needs to know whether we are using dynamic loading so that
# it can set the libperl name appropriately.
# Allow command line overrides.
#
ARCH=`arch | sed 's/^OpenBSD.//'`
case "${ARCH}-${osvers}" in
alpha-2.[0-8]|mips-2.[0-8]|powerpc-2.[0-7]|m88k-*|hppa-*|vax-*)
        test -z "$usedl" && usedl=$undef
        ;;
*)
        test -z "$usedl" && usedl=$define
        # We use -fPIC here because -fpic is *NOT* enough for some of the
        # extensions like Tk on some OpenBSD platforms (ie: sparc)
        cccdlflags="-DPIC -fPIC $cccdlflags"
        case "$osvers" in
        [01].*|2.[0-7]|2.[0-7].*)
                lddlflags="-Bshareable $lddlflags"
                ;;
        2.[8-9]|3.0)
                ld=${cc:-cc}
                lddlflags="-shared -fPIC $lddlflags"
                ;;
        *) # from 3.1 onwards
                ld=${cc:-cc}
                lddlflags="-shared -fPIC $lddlflags"
                libswanted=`echo $libswanted | sed 's/ dl / /'`
                ;;
        esac

        # We need to force ld to export symbols on ELF platforms.
        # Without this, dlopen() is crippled.
        ELF=`${cc:-cc} -dM -E - </dev/null | grep __ELF__`
        test -n "$ELF" && ldflags="-Wl,-E $ldflags"
        ;;
esac

#
# Tweaks for various versions of OpenBSD
#
case "$osvers" in
2.5)
        # OpenBSD 2.5 has broken odbm support
        i_dbm=$undef
        ;;
esac

# OpenBSD doesn't need libcrypt but many folks keep a stub lib
# around for old NetBSD binaries.
libswanted=`echo $libswanted | sed 's/ crypt / /'`

# Configure can't figure this out non-interactively
d_suidsafe=$define

# cc is gcc so we can do better than -O
# Allow a command-line override, such as -Doptimize=-g
case ${ARCH} in
m88k)
   optimize='-O0'
   ;;
hppa)
   optimize='-O0'
   ;;
*)
   test "$optimize" || optimize='-O2'
   ;;
esac

# This script UU/usethreads.cbu will get 'called-back' by Configure 
# after it has prompted the user for whether to use threads.
cat > UU/usethreads.cbu <<'EOCBU'
case "$usethreads" in
$define|true|[yY]*)
        # any openbsd version dependencies with pthreads?
        ccflags="-pthread $ccflags"
        ldflags="-pthread $ldflags"
        case "$osvers" in
        [0-2].*|3.[0-2])
                # Change from -lc to -lc_r
                set `echo "X $libswanted " | sed 's/ c / c_r /'`
                shift
                libswanted="$*"
        ;;
        esac
        case "$osvers" in
        [012].*|3.[0-6])
                # Broken at least up to OpenBSD 3.6, we'll see about 3.7
                d_getservbyname_r=$undef ;;
        esac
esac
EOCBU

# This script UU/use64bitint.cbu will get 'called-back' by Configure 
# after it has prompted the user for whether to use 64-bitness.
cat > UU/use64bitint.cbu <<'EOCBU'
case "$use64bitint" in
$define|true|[yY]*)
        echo " "
        echo "Checking if your C library has broken 64-bit functions..." >&4
        $cat >check.c <<EOCP
#include <stdio.h>
typedef $uquadtype myULL;
int main (void)
{
    struct {
        double d;
        myULL  u;
    } *p, test[] = {
        {4294967303.15, 4294967303ULL},
        {4294967294.2,  4294967294ULL},
        {4294967295.7,  4294967295ULL},
        {0.0, 0ULL}
    };
    for (p = test; p->u; p++) {
        myULL x = (myULL)p->d;
        if (x != p->u) {
            printf("buggy\n");
            return 0;
        }
    }
    printf("ok\n");
    return 0;
}
EOCP
        set check
        if eval $compile_ok; then
            libcquad=`./check`
            echo "Your C library's 64-bit functions are $libcquad."
        else
            echo "(I can't seem to compile the test program.)"
            echo "Assuming that your C library's 64-bit functions are ok."
            libcquad="ok"
        fi
        $rm -f check.c check

        case "$libcquad" in
            buggy*)
                cat >&4 <<EOM

*** You have a C library with broken 64-bit functions.
*** 64-bit support does not work reliably in this configuration.
*** Please rerun Configure without -Duse64bitint and/or -Dusemorebits.
*** Cannot continue, aborting.

EOM
                exit 1
                ;;
        esac
esac
EOCBU

# When building in the OpenBSD tree we use different paths
# This is only part of the story, the rest comes from config.over
case "$openbsd_distribution" in
''|$undef|false) ;;
*)
        # We put things in /usr, not /usr/local
        prefix='/usr'
        prefixexp='/usr'
        sysman='/usr/share/man/man1'
        libpth='/usr/lib'
        glibpth='/usr/lib'
        # Local things, however, do go in /usr/local
        siteprefix='/usr/local'
        siteprefixexp='/usr/local'
        # Ports installs non-std libs in /usr/local/lib so look there too
        locincpth='/usr/local/include'
        loclibpth='/usr/local/lib'
        # Link perl with shared libperl
        if [ "$usedl" = "$define" -a -r shlib_version ]; then
                useshrplib=true
                libperl=`. ./shlib_version; echo libperl.so.${major}.${minor}`
        fi
        ;;
esac

# end