X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/99cae59c9804a54de2c24faf30346c9dabda889c..2098fd41655bd1ab9694501f15e9e5b0465d3bef:/hints/linux.sh diff --git a/hints/linux.sh b/hints/linux.sh index 545f50e..c88f157 100644 --- a/hints/linux.sh +++ b/hints/linux.sh @@ -6,11 +6,11 @@ # Additional info from Nigel Head # and Kenneth Albanowski # -# Consolidated by Andy Dougherty +# Consolidated by Andy Dougherty # # Updated Thu Feb 8 11:56:10 EST 1996 -# Updated Thu May 30 10:50:22 EDT 1996 by +# 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 @@ -18,34 +18,132 @@ # 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 +# Debian and Red Hat, and perhaps other vendors, provide both runtime and +# development packages for some libraries. The runtime packages contain shared +# libraries with version information in their names (e.g., libgdbm.so.1.7.3); +# the development packages supplement this with versionless shared libraries +# (e.g., libgdbm.so). +# +# If you want to link against such a library, you must install the development +# version of the package. +# +# These packages use a -dev naming convention in both Debian and Red Hat: +# libgdbmg1 (non-development version of GNU libc 2-linked GDBM library) +# libgdbmg1-dev (development version of GNU libc 2-linked GDBM library) +# So make sure that for any libraries you wish to link Perl with under +# Debian or Red Hat you have the -dev packages installed. + +# SuSE Linux can be used as cross-compilation host for Cray XT4 Catamount/Qk. +if test -d /opt/xt-pe +then + case "`cc -V 2>&1`" in + *catamount*) . hints/catamount.sh; return ;; + esac +fi -# gcc-2.6.3 defines _G_HAVE_BOOL to 1, but doesn't actually supply bool. -ccflags="-Dbool=char -DHAS_BOOL $ccflags" +# Some operating systems (e.g., Solaris 2.6) will link to a versioned shared +# library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an +# appropriate version of libgdbm, if one is available; Linux, however, doesn't +# do the implicit mapping. +ignore_versioned_solibs='y' -# BSD compatability library no longer needed -# 'kaffe' has a /usr/lib/libnet.so which is not at all relevent for perl. -set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /'` +# BSD compatibility library no longer needed +# 'kaffe' has a /usr/lib/libnet.so which is not at all relevant for perl. +# bind causes issues with several reentrant functions +set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /' -e 's/ bind / /'` shift libswanted="$*" +# Debian 4.0 puts ndbm in the -lgdbm_compat library. +libswanted="$libswanted gdbm_compat" + +# If you have glibc, then report the version for ./myconfig bug reporting. +# (Configure doesn't need to know the specific version since it just uses +# gcc to load the library for all tests.) +# We don't use __GLIBC__ and __GLIBC_MINOR__ because they +# are insufficiently precise to distinguish things like +# libc-2.0.6 and libc-2.0.7. +if test -L /lib/libc.so.6; then + libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'` + libc=/lib/$libc +fi + # Configure may fail to find lstat() since it's a static/inline # function in . d_lstat=define -# Explanation? +# malloc wrap works +case "$usemallocwrap" in +'') usemallocwrap='define' ;; +esac + +# The system malloc() is about as fast and as frugal as perl's. +# Since the system malloc() has been the default since at least +# 5.001, we might as well leave it that way. --AD 10 Jan 2002 case "$usemymalloc" in '') usemymalloc='n' ;; esac +# Check if we're about to use Intel's ICC compiler +case "`${cc:-cc} -V 2>&1`" in +*"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*) + # This is needed for Configure's prototype checks to work correctly + # The -mp flag is needed to pass various floating point related tests + # The -no-gcc flag is needed otherwise, icc pretends (poorly) to be gcc + ccflags="-we147 -mp -no-gcc $ccflags" + # Prevent relocation errors on 64bits arch + case "`uname -m`" in + *ia64*|*x86_64*) + cccdlflags='-fPIC' + ;; + esac + # If we're using ICC, we usually want the best performance + case "$optimize" in + '') optimize='-O3' ;; + esac + ;; +*" Sun "*"C"*) + # Sun's C compiler, which might have a 'tag' name between + # 'Sun' and the 'C': Examples: + # cc: Sun C 5.9 Linux_i386 Patch 124871-01 2007/07/31 + # cc: Sun Ceres C 5.10 Linux_i386 2008/07/10 + test "$optimize" || optimize='-xO2' + cccdlflags='-KPIC' + lddlflags='-G -Bdynamic' + # Sun C doesn't support gcc attributes, but, in many cases, doesn't + # complain either. Not all cases, though. + d_attribute_format='undef' + d_attribute_malloc='undef' + d_attribute_nonnull='undef' + d_attribute_noreturn='undef' + d_attribute_pure='undef' + d_attribute_unused='undef' + d_attribute_warn_unused_result='undef' + ;; +esac + case "$optimize" in -'') optimize='-O2' ;; +# use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc +'') + optimize='-O2' + case "`uname -m`" in + ppc*) + # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy + # with -O2 ; so downgrade to -O1. + optimize='-O1' + ;; + ia64*) + # This architecture has had various problems with gcc's + # in the 3.2, 3.3, and 3.4 releases when optimized to -O2. See + # RT #37156 for a discussion of the problem. + case "`${cc:-gcc} -v 2>&1`" in + *"version 3.2"*|*"version 3.3"*|*"version 3.4"*) + ccflags="-fno-delete-null-pointer-checks $ccflags" + ;; + esac + ;; + esac + ;; esac # Are we using ELF? Thanks to Kenneth Albanowski @@ -54,6 +152,7 @@ cat >try.c <<'EOM' /* Test for whether ELF binaries are produced */ #include #include +#include main() { char buffer[4]; int i=open("a.out",O_RDONLY); @@ -67,17 +166,13 @@ main() { exit(0); /* succeed (yes, it's ELF) */ } EOM -if ${cc:-gcc} try.c >/dev/null 2>&1 && ./a.out; then +if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./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 @@ -103,8 +198,8 @@ EOM #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 + # 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. @@ -117,7 +212,7 @@ EOM # 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. @@ -137,7 +232,7 @@ fi rm -f try.c a.out -if /bin/bash -c exit; then +if /bin/sh -c exit; then echo '' echo 'You appear to have a working bash. Good.' else @@ -167,49 +262,177 @@ fi # 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 no longer run in the hints/ directory) +# November 2001: That warning's pretty old now and probably not so +# relevant, especially since perl now uses File::Glob for globbing. +# We'll still look for tcsh, but tone down the warnings. +# Andy Dougherty, Nov. 6, 2001 +if $csh -c 'echo $version' >/dev/null 2>&1; then + echo 'Your csh is really tcsh. Good.' +else 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." + elif [ -f "$csh" ]; then + echo "Couldn't find tcsh. Csh-based globbing might be broken." fi -else - echo 'Your csh is really tcsh. Good.' fi # Shimpei Yamashita # Message-Id: <33EF1634.B36B6500@pobox.com> -# -# MkLinux (osname=linux,archname=ppc-linux), which differs slightly from other -# linuces, needs special flags passed in order for dynamic loading to work. +# +# The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need +# special flags passed in order for dynamic loading to work. # instead of the recommended: +# # ccdlflags='-rdynamic' -# +# # it should be: # ccdlflags='-Wl,-E' +# +# So if your DR2 (DR3 came out summer 1998, consider upgrading) +# has problems with dynamic loading, uncomment the +# following three lines, make distclean, and re-Configure: +#case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in +#'osfmach3ppc') ccdlflags='-Wl,-E' ;; +#esac + +case "`uname -m`" in +sparc*) + case "$cccdlflags" in + *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; + *-fPIC*) ;; + *) cccdlflags="$cccdlflags -fPIC" ;; + esac + ;; +esac + +# SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than +# true libraries. The scripts cause binding against static +# version of -lgdbm which is a bad idea. So if we have 'nm' +# make sure it can read the file +# NI-S 2003/08/07 +if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then + if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then + echo 'Your shared -lndbm seems to be a real library.' + else + echo 'Your shared -lndbm is not a real library.' + set `echo X "$libswanted "| sed -e 's/ ndbm / /'` + shift + libswanted="$*" + fi +fi + -# XXX EXPERIMENTAL A.D. 2/27/1998 -# XXX This script UU/usethreads.cbu will get 'called-back' by Configure -# XXX after it has prompted the user for whether to use threads. -cat > UU/usethreads.cbu <<'EOSH' +# 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' +if getconf GNU_LIBPTHREAD_VERSION | grep NPTL >/dev/null 2>/dev/null +then + threadshavepids="" +else + threadshavepids="-DTHREADS_HAVE_PIDS" +fi case "$usethreads" in $define|true|[yY]*) - ccflags="-D_REENTRANT $ccflags" - # -lpthread needs to come before -lc but after other libraries such - # as -lgdbm and such like. We assume here that -lc is present in - # libswanted. If that fails to be true in future, then this can be - # changed to add pthread to the very end of libswanted. - set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` + ccflags="-D_REENTRANT -D_GNU_SOURCE $threadshavepids $ccflags" + if echo $libswanted | grep -v pthread >/dev/null + then + set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` + shift + libswanted="$*" + fi + + # Somehow at least in Debian 2.2 these manage to escape + # the #define forest of and so that + # the hasproto macro of Configure doesn't see these protos, + # even with the -D_GNU_SOURCE. + + d_asctime_r_proto="$define" + d_crypt_r_proto="$define" + d_ctime_r_proto="$define" + d_gmtime_r_proto="$define" + d_localtime_r_proto="$define" + d_random_r_proto="$define" + + ;; +esac +EOCBU + +cat > UU/uselargefiles.cbu <<'EOCBU' +# This script UU/uselargefiles.cbu will get 'called-back' by Configure +# after it has prompted the user for whether to use large files. +case "$uselargefiles" in +''|$define|true|[yY]*) +# Keep this in the left margin. +ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" + + ccflags="$ccflags $ccflags_uselargefiles" + ;; +esac +EOCBU + +# Purify fails to link Perl if a "-lc" is passed into its linker +# due to duplicate symbols. +case "$PURIFY" in +$define|true|[yY]*) + set `echo X "$libswanted "| sed -e 's/ c / /'` shift libswanted="$*" ;; esac -EOSH -# XXX EXPERIMENTAL --end of call-back + +# If we are using g++ we must use nm and force ourselves to use +# the /usr/lib/libc.a (resetting the libc below to an empty string +# makes Configure to look for the right one) because the symbol +# scanning tricks of Configure will crash and burn horribly. +case "$cc" in +*g++*) usenm=true + libc='' + ;; +esac + +# If using g++, the Configure scan for dlopen() and (especially) +# dlerror() might fail, easier just to forcibly hint them in. +case "$cc" in +*g++*) + d_dlopen='define' + d_dlerror='define' + ;; +esac + +# Under some circumstances libdb can get built in such a way as to +# need pthread explicitly linked. + +libdb_needs_pthread="N" + +if echo " $libswanted " | grep -v " pthread " >/dev/null +then + if echo " $libswanted " | grep " db " >/dev/null + then + for DBDIR in $glibpth + do + DBLIB="$DBDIR/libdb.so" + if [ -f $DBLIB ] + then + if nm -u $DBLIB | grep pthread >/dev/null + then + if ldd $DBLIB | grep pthread >/dev/null + then + libdb_needs_pthread="N" + else + libdb_needs_pthread="Y" + fi + fi + fi + done + fi +fi + +case "$libdb_needs_pthread" in + "Y") + libswanted="$libswanted pthread" + ;; +esac