# hints/linux.sh # Original version by rsanders # Additional support by Kenneth Albanowski # # ELF support by H.J. Lu # Additional info from Nigel Head # and Kenneth Albanowski # # Consolidated by Andy Dougherty # # Updated Thu Feb 8 11:56:10 EST 1996 # Updated Thu May 30 10:50:22 EDT 1996 by # Updated Fri Jun 21 11:07:54 EDT 1996 # NDBM support for ELF renabled by # No version of Linux supports setuid scripts. d_suidsafe='undef' # perl goes into the /usr tree. See the Filesystem Standard # available via anonymous FTP at tsx-11.mit.edu in # /pub/linux/docs/linux-standards/fsstnd. # Allow a command line override, e.g. Configure -Dprefix=/foo/bar case "$prefix" in '') prefix='/usr' ;; esac # gcc-2.6.3 defines _G_HAVE_BOOL to 1, but doesn't actually supply bool. ccflags="-Dbool=char -DHAS_BOOL $ccflags" # BSD compatability library no longer needed set `echo X "$libswanted "| sed -e 's/ bsd / /'` shift libswanted="$*" # Configure may fail to find lstat() since it's a static/inline # function in . d_lstat=define # Explanation? case "$usemymalloc" in '') usemymalloc='n' ;; esac case "$optimize" in '') optimize='-O2' ;; esac # Are we using ELF? Thanks to Kenneth Albanowski # for this test. cat >try.c <<'EOM' /* Test for whether ELF binaries are produced */ #include #include main() { char buffer[4]; int i=open("a.out",O_RDONLY); if(i==-1) exit(1); /* fail */ if(read(i,&buffer[0],4)<4) exit(1); /* fail */ if(buffer[0] != 127 || buffer[1] != 'E' || buffer[2] != 'L' || buffer[3] != 'F') exit(1); /* fail */ exit(0); /* succeed (yes, it's ELF) */ } EOM if ${cc:-gcc} try.c >/dev/null 2>&1 && ./a.out; then cat <<'EOM' >&4 You appear to have ELF support. I'll try to use it for dynamic loading. If dynamic loading doesn't work, read hints/linux.sh for further information. EOM #For RedHat Linux 3.0.3, you may need to fetch # ftp://ftp.redhat.com/pub/redhat-3.0.3/i386/updates/RPMS/ld.so-1.7.14-3.i386.rpm # else cat <<'EOM' >&4 You don't have an ELF gcc. I will use dld if possible. If you are using a version of DLD earlier than 3.2.6, or don't have it at all, you should probably upgrade. If you are forced to use 3.2.4, you should uncomment a couple of lines in hints/linux.sh and restart Configure so that shared libraries will be disallowed. EOM lddlflags="-r $lddlflags" # These empty values are so that Configure doesn't put in the # Linux ELF values. ccdlflags=' ' cccdlflags=' ' ccflags="-DOVR_DBL_DIG=14 $ccflags" so='sa' dlext='o' nm_so_opt=' ' ## If you are using DLD 3.2.4 which does not support shared libs, ## uncomment the next two lines: #ldflags="-static" #so='none' # In addition, on some systems there is a problem with perl and NDBM # which causes AnyDBM and NDBM_File to lock up. This is evidenced # in the tests as AnyDBM just freezing. Apparently, this only # happens on a.out systems, so we disable NDBM for all a.out linux # systems. If someone can suggest a more robust test # that would be appreciated. # # More info: # Date: Wed, 7 Feb 1996 03:21:04 +0900 # From: Jeffrey Friedl # # I tried compiling with DBM support and sure enough things locked up # just as advertised. Checking into it, I found that the lockup was # during the call to dbm_open. Not *in* dbm_open -- but between the call # to and the jump into. # # To make a long story short, making sure that the *.a and *.sa pairs of # /usr/lib/lib{m,db,gdbm}.{a,sa} # were perfectly in sync took care of it. # # This will generate a harmless Whoa There! message case "$d_dbm_open" in '') cat <<'EOM' >&4 Disabling ndbm. This will generate a Whoa There message in Configure. Read hints/linux.sh for further information. EOM # You can override this with Configure -Dd_dbm_open d_dbm_open=undef ;; esac fi rm -f try.c a.out if /bin/bash -c exit; then echo '' echo 'You appear to have a working bash. Good.' else cat << 'EOM' >&4 *********************** Warning! ********************* It would appear you have a defective bash shell installed. This is likely to give you a failure of op/exec test #5 during the test phase of the build, Upgrading to a recent version (1.14.4 or later) should fix the problem. ****************************************************** EOM fi # On SPARClinux, # The following csh consistently coredumped in the test directory # "/home/mikedlr/perl5.003_94/t", though not most other directories. #Name : csh Distribution: Red Hat Linux (Rembrandt) #Version : 5.2.6 Vendor: Red Hat Software #Release : 3 Build Date: Fri May 24 19:42:14 1996 #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com #Group : Shells Source RPM: csh-5.2.6-3.src.rpm #Size : 184417 #Description : BSD c-shell # For this reason I suggest using the much bug-fixed tcsh for globbing # where available. if [ ! "`csh -c 'echo $version' 2>/dev/null`" ] then echo 'Real csh found (might break); looking for tcsh ...' # Use ../UU/loc to find tcsh. (We run in the hints/ directory.) if xxx=`../UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then echo "Found tcsh. I'll use it for globbing." # We can't change Configure's setting of $csh, due to the way # Configure handles $d_portable and commands found in $loclist. # We can set the value for CSH in config.h by setting full_csh. full_csh=$xxx else echo "Couldn't find tcsh. BEWARE: GLOBBING MIGHT BE BROKEN." fi else echo 'Your csh is really tcsh. Good.' fi