| 1 | # hints/linux.sh |
| 2 | # Original version by rsanders |
| 3 | # Additional support by Kenneth Albanowski <kjahds@kjahds.com> |
| 4 | # |
| 5 | # ELF support by H.J. Lu <hjl@nynexst.com> |
| 6 | # Additional info from Nigel Head <nhead@ESOC.bitnet> |
| 7 | # and Kenneth Albanowski <kjahds@kjahds.com> |
| 8 | # |
| 9 | # Consolidated by Andy Dougherty <doughera@lafayette.edu> |
| 10 | # |
| 11 | # Updated Thu Feb 8 11:56:10 EST 1996 |
| 12 | |
| 13 | # Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafayette.edu> |
| 14 | |
| 15 | # Updated Fri Jun 21 11:07:54 EDT 1996 |
| 16 | # NDBM support for ELF renabled by <kjahds@kjahds.com> |
| 17 | |
| 18 | # No version of Linux supports setuid scripts. |
| 19 | d_suidsafe='undef' |
| 20 | |
| 21 | # Debian and Red Hat, and perhaps other vendors, provide both runtime and |
| 22 | # development packages for some libraries. The runtime packages contain shared |
| 23 | # libraries with version information in their names (e.g., libgdbm.so.1.7.3); |
| 24 | # the development packages supplement this with versionless shared libraries |
| 25 | # (e.g., libgdbm.so). |
| 26 | # |
| 27 | # If you want to link against such a library, you must install the development |
| 28 | # version of the package. |
| 29 | # |
| 30 | # These packages use a -dev naming convention in both Debian and Red Hat: |
| 31 | # libgdbmg1 (non-development version of GNU libc 2-linked GDBM library) |
| 32 | # libgdbmg1-dev (development version of GNU libc 2-linked GDBM library) |
| 33 | # So make sure that for any libraries you wish to link Perl with under |
| 34 | # Debian or Red Hat you have the -dev packages installed. |
| 35 | # |
| 36 | # Some operating systems (e.g., Solaris 2.6) will link to a versioned shared |
| 37 | # library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an |
| 38 | # appropriate version of libgdbm, if one is available; Linux, however, doesn't |
| 39 | # do the implicit mapping. |
| 40 | ignore_versioned_solibs='y' |
| 41 | |
| 42 | # BSD compatability library no longer needed |
| 43 | # 'kaffe' has a /usr/lib/libnet.so which is not at all relevent for perl. |
| 44 | set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /'` |
| 45 | shift |
| 46 | libswanted="$*" |
| 47 | |
| 48 | # If you have glibc, then report the version for ./myconfig bug reporting. |
| 49 | # (Configure doesn't need to know the specific version since it just uses |
| 50 | # gcc to load the library for all tests.) |
| 51 | # We don't use __GLIBC__ and __GLIBC_MINOR__ because they |
| 52 | # are insufficiently precise to distinguish things like |
| 53 | # libc-2.0.6 and libc-2.0.7. |
| 54 | if test -L /lib/libc.so.6; then |
| 55 | libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'` |
| 56 | libc=/lib/$libc |
| 57 | fi |
| 58 | |
| 59 | # Configure may fail to find lstat() since it's a static/inline |
| 60 | # function in <sys/stat.h>. |
| 61 | d_lstat=define |
| 62 | |
| 63 | # The system malloc() is about as fast and as frugal as perl's. |
| 64 | # Since the system malloc() has been the default since at least |
| 65 | # 5.001, we might as well leave it that way. --AD 10 Jan 2002 |
| 66 | case "$usemymalloc" in |
| 67 | '') usemymalloc='n' ;; |
| 68 | esac |
| 69 | |
| 70 | # Check if we're about to use Intel's ICC compiler |
| 71 | case "`${cc:-cc} -V 2>&1`" in |
| 72 | *"Intel(R) C++ Compiler"*) |
| 73 | # This is needed for Configure's prototype checks to work correctly |
| 74 | ccflags="-we147 $ccflags" |
| 75 | # If we're using ICC, we usually want the best performance |
| 76 | case "$optimize" in |
| 77 | '') optimize='-O3' ;; |
| 78 | esac |
| 79 | ;; |
| 80 | esac |
| 81 | |
| 82 | case "$optimize" in |
| 83 | '') # If we have modern enough gcc and well-supported enough CPU, |
| 84 | # crank up the optimization level. |
| 85 | case "`${cc:-gcc} -v 2>&1`" in |
| 86 | *"gcc version 2.95"*|*"gcc version 3."*) |
| 87 | case "`arch 2>&1`" in |
| 88 | i?86|ppc) optimize='-O3' ;; |
| 89 | esac |
| 90 | ;; |
| 91 | esac |
| 92 | case "$optimize" in |
| 93 | '') optimize='-O2' ;; |
| 94 | esac |
| 95 | ;; |
| 96 | esac |
| 97 | |
| 98 | # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com> |
| 99 | # for this test. |
| 100 | cat >try.c <<'EOM' |
| 101 | /* Test for whether ELF binaries are produced */ |
| 102 | #include <fcntl.h> |
| 103 | #include <stdlib.h> |
| 104 | main() { |
| 105 | char buffer[4]; |
| 106 | int i=open("a.out",O_RDONLY); |
| 107 | if(i==-1) |
| 108 | exit(1); /* fail */ |
| 109 | if(read(i,&buffer[0],4)<4) |
| 110 | exit(1); /* fail */ |
| 111 | if(buffer[0] != 127 || buffer[1] != 'E' || |
| 112 | buffer[2] != 'L' || buffer[3] != 'F') |
| 113 | exit(1); /* fail */ |
| 114 | exit(0); /* succeed (yes, it's ELF) */ |
| 115 | } |
| 116 | EOM |
| 117 | if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then |
| 118 | cat <<'EOM' >&4 |
| 119 | |
| 120 | You appear to have ELF support. I'll try to use it for dynamic loading. |
| 121 | If dynamic loading doesn't work, read hints/linux.sh for further information. |
| 122 | EOM |
| 123 | |
| 124 | else |
| 125 | cat <<'EOM' >&4 |
| 126 | |
| 127 | You don't have an ELF gcc. I will use dld if possible. If you are |
| 128 | using a version of DLD earlier than 3.2.6, or don't have it at all, you |
| 129 | should probably upgrade. If you are forced to use 3.2.4, you should |
| 130 | uncomment a couple of lines in hints/linux.sh and restart Configure so |
| 131 | that shared libraries will be disallowed. |
| 132 | |
| 133 | EOM |
| 134 | lddlflags="-r $lddlflags" |
| 135 | # These empty values are so that Configure doesn't put in the |
| 136 | # Linux ELF values. |
| 137 | ccdlflags=' ' |
| 138 | cccdlflags=' ' |
| 139 | ccflags="-DOVR_DBL_DIG=14 $ccflags" |
| 140 | so='sa' |
| 141 | dlext='o' |
| 142 | nm_so_opt=' ' |
| 143 | ## If you are using DLD 3.2.4 which does not support shared libs, |
| 144 | ## uncomment the next two lines: |
| 145 | #ldflags="-static" |
| 146 | #so='none' |
| 147 | |
| 148 | # In addition, on some systems there is a problem with perl and NDBM |
| 149 | # which causes AnyDBM and NDBM_File to lock up. This is evidenced |
| 150 | # in the tests as AnyDBM just freezing. Apparently, this only |
| 151 | # happens on a.out systems, so we disable NDBM for all a.out linux |
| 152 | # systems. If someone can suggest a more robust test |
| 153 | # that would be appreciated. |
| 154 | # |
| 155 | # More info: |
| 156 | # Date: Wed, 7 Feb 1996 03:21:04 +0900 |
| 157 | # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp> |
| 158 | # |
| 159 | # I tried compiling with DBM support and sure enough things locked up |
| 160 | # just as advertised. Checking into it, I found that the lockup was |
| 161 | # during the call to dbm_open. Not *in* dbm_open -- but between the call |
| 162 | # to and the jump into. |
| 163 | # |
| 164 | # To make a long story short, making sure that the *.a and *.sa pairs of |
| 165 | # /usr/lib/lib{m,db,gdbm}.{a,sa} |
| 166 | # were perfectly in sync took care of it. |
| 167 | # |
| 168 | # This will generate a harmless Whoa There! message |
| 169 | case "$d_dbm_open" in |
| 170 | '') cat <<'EOM' >&4 |
| 171 | |
| 172 | Disabling ndbm. This will generate a Whoa There message in Configure. |
| 173 | Read hints/linux.sh for further information. |
| 174 | EOM |
| 175 | # You can override this with Configure -Dd_dbm_open |
| 176 | d_dbm_open=undef |
| 177 | ;; |
| 178 | esac |
| 179 | fi |
| 180 | |
| 181 | rm -f try.c a.out |
| 182 | |
| 183 | if /bin/sh -c exit; then |
| 184 | echo '' |
| 185 | echo 'You appear to have a working bash. Good.' |
| 186 | else |
| 187 | cat << 'EOM' >&4 |
| 188 | |
| 189 | *********************** Warning! ********************* |
| 190 | It would appear you have a defective bash shell installed. This is likely to |
| 191 | give you a failure of op/exec test #5 during the test phase of the build, |
| 192 | Upgrading to a recent version (1.14.4 or later) should fix the problem. |
| 193 | ****************************************************** |
| 194 | EOM |
| 195 | |
| 196 | fi |
| 197 | |
| 198 | # On SPARClinux, |
| 199 | # The following csh consistently coredumped in the test directory |
| 200 | # "/home/mikedlr/perl5.003_94/t", though not most other directories. |
| 201 | |
| 202 | #Name : csh Distribution: Red Hat Linux (Rembrandt) |
| 203 | #Version : 5.2.6 Vendor: Red Hat Software |
| 204 | #Release : 3 Build Date: Fri May 24 19:42:14 1996 |
| 205 | #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com |
| 206 | #Group : Shells Source RPM: csh-5.2.6-3.src.rpm |
| 207 | #Size : 184417 |
| 208 | #Description : BSD c-shell |
| 209 | |
| 210 | # For this reason I suggest using the much bug-fixed tcsh for globbing |
| 211 | # where available. |
| 212 | |
| 213 | # November 2001: That warning's pretty old now and probably not so |
| 214 | # relevant, especially since perl now uses File::Glob for globbing. |
| 215 | # We'll still look for tcsh, but tone down the warnings. |
| 216 | # Andy Dougherty, Nov. 6, 2001 |
| 217 | if $csh -c 'echo $version' >/dev/null 2>&1; then |
| 218 | echo 'Your csh is really tcsh. Good.' |
| 219 | else |
| 220 | if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then |
| 221 | echo "Found tcsh. I'll use it for globbing." |
| 222 | # We can't change Configure's setting of $csh, due to the way |
| 223 | # Configure handles $d_portable and commands found in $loclist. |
| 224 | # We can set the value for CSH in config.h by setting full_csh. |
| 225 | full_csh=$xxx |
| 226 | elif [ -f "$csh" ]; then |
| 227 | echo "Couldn't find tcsh. Csh-based globbing might be broken." |
| 228 | fi |
| 229 | fi |
| 230 | |
| 231 | # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu> |
| 232 | # Message-Id: <33EF1634.B36B6500@pobox.com> |
| 233 | # |
| 234 | # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need |
| 235 | # special flags passed in order for dynamic loading to work. |
| 236 | # instead of the recommended: |
| 237 | # |
| 238 | # ccdlflags='-rdynamic' |
| 239 | # |
| 240 | # it should be: |
| 241 | # ccdlflags='-Wl,-E' |
| 242 | # |
| 243 | # So if your DR2 (DR3 came out summer 1998, consider upgrading) |
| 244 | # has problems with dynamic loading, uncomment the |
| 245 | # following three lines, make distclean, and re-Configure: |
| 246 | #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in |
| 247 | #'osfmach3ppc') ccdlflags='-Wl,-E' ;; |
| 248 | #esac |
| 249 | |
| 250 | case "`uname -r`" in |
| 251 | sparc-linux) |
| 252 | case "$cccdlflags" in |
| 253 | *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; |
| 254 | *) cccdlflags="$cccdlflags -fPIC" ;; |
| 255 | esac |
| 256 | ;; |
| 257 | esac |
| 258 | |
| 259 | # SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than |
| 260 | # true libraries. The scripts cause binding against static |
| 261 | # version of -lgdbm which is a bad idea. So if we have 'nm' |
| 262 | # make sure it can read the file |
| 263 | # NI-S 2003/08/07 |
| 264 | if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then |
| 265 | if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then |
| 266 | echo 'Your shared -lndbm seems to be a real library.' |
| 267 | else |
| 268 | echo 'Your shared -lndbm is not a real library.' |
| 269 | set `echo X "$libswanted "| sed -e 's/ ndbm / /'` |
| 270 | shift |
| 271 | libswanted="$*" |
| 272 | fi |
| 273 | fi |
| 274 | |
| 275 | |
| 276 | # This script UU/usethreads.cbu will get 'called-back' by Configure |
| 277 | # after it has prompted the user for whether to use threads. |
| 278 | cat > UU/usethreads.cbu <<'EOCBU' |
| 279 | case "$usethreads" in |
| 280 | $define|true|[yY]*) |
| 281 | ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags" |
| 282 | set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` |
| 283 | shift |
| 284 | libswanted="$*" |
| 285 | |
| 286 | # Somehow at least in Debian 2.2 these manage to escape |
| 287 | # the #define forest of <features.h> and <time.h> so that |
| 288 | # the hasproto macro of Configure doesn't see these protos, |
| 289 | # even with the -D_GNU_SOURCE. |
| 290 | |
| 291 | d_asctime_r_proto="$define" |
| 292 | d_crypt_r_proto="$define" |
| 293 | d_ctime_r_proto="$define" |
| 294 | d_gmtime_r_proto="$define" |
| 295 | d_localtime_r_proto="$define" |
| 296 | d_random_r_proto="$define" |
| 297 | |
| 298 | ;; |
| 299 | esac |
| 300 | EOCBU |
| 301 | |
| 302 | cat > UU/uselargefiles.cbu <<'EOCBU' |
| 303 | # This script UU/uselargefiles.cbu will get 'called-back' by Configure |
| 304 | # after it has prompted the user for whether to use large files. |
| 305 | case "$uselargefiles" in |
| 306 | ''|$define|true|[yY]*) |
| 307 | # Keep this in the left margin. |
| 308 | ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
| 309 | |
| 310 | ccflags="$ccflags $ccflags_uselargefiles" |
| 311 | ;; |
| 312 | esac |
| 313 | EOCBU |