X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/f443a56e58e8d9278504f652b6b00ec642fed397..7dbf68d2396b16bcbba2780133a8c8aa3b172884:/hints/linux.sh diff --git a/hints/linux.sh b/hints/linux.sh index caf380a..688c68d 100644 --- a/hints/linux.sh +++ b/hints/linux.sh @@ -13,11 +13,14 @@ # 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 +# NDBM support for ELF re-enabled by # No version of Linux supports setuid scripts. d_suidsafe='undef' +# No version of Linux needs libutil for perl. +i_libutil='undef' + # 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); @@ -32,19 +35,31 @@ d_suidsafe='undef' # 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 + # 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.) @@ -60,6 +75,11 @@ fi # function in . d_lstat=define +# malloc wrap works +case "$usemallocwrap" in +'') usemallocwrap='define' ;; +esac + # The system malloc() is about as fast and as frugal as perl's. # Since the system malloc() has been the default since at least # 5.001, we might as well leave it that way. --AD 10 Jan 2002 @@ -67,20 +87,99 @@ case "$usemymalloc" in '') usemymalloc='n' ;; esac -case "$optimize" in -'') # If we have modern enough gcc and well-supported enough CPU, - # crank up the optimization level. - case "`${cc:-gcc} -v 2>&1`" in - *"gcc version 2.95"*|*"gcc version 3."*) - case "`arch 2>&1`" in - i?86|ppc) optimize='-O3' ;; - esac - ;; +# Check if we're about to use Intel's ICC compiler +case "`${cc:-cc} -V 2>&1`" in +*"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*) + # record the version, formats: + # icc (ICC) 10.1 20080801 + # icpc (ICC) 10.1 20080801 + # followed by a copyright on the second line + ccversion=`${cc:-cc} --version | sed -n -e 's/^icp\?c \((ICC) \)\?//p'` + # 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='-O2' ;; + '') 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 +# 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 + +# Ubuntu 11.04 (and later, presumably) doesn't keep most libraries +# (such as -lm) in /lib or /usr/lib. So we have to ask gcc to tell us +# where to look. We don't want gcc's own libraries, however, so we +# filter those out. +# This could be conditional on Unbuntu, but other distributions may +# follow suit, and this scheme seems to work even on rather old gcc's. +# This unconditionally uses gcc because even if the user is using another +# compiler, we still need to find the math library and friends, and I don't +# know how other compilers will cope with that situation. +# Morever, if the user has their own gcc earlier in $PATH than the system gcc, +# we don't want its libraries. So we try to prefer the system gcc +# Still, as an escape hatch, allow Configure command line overrides to +# plibpth to bypass this check. +if [ -x /usr/bin/gcc ] ; then + gcc=/usr/bin/gcc +else + gcc=gcc +fi + +case "$plibpth" in +'') plibpth=`LANG=C LC_ALL=C $gcc -print-search-dirs | grep libraries | + cut -f2- -d= | tr ':' $trnl | grep -v 'gcc' | sed -e 's:/$::'` + set X $plibpth # Collapse all entries on one line + shift + plibpth="$*" + ;; esac # Are we using ELF? Thanks to Kenneth Albanowski @@ -89,6 +188,7 @@ 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); @@ -235,10 +335,11 @@ fi #'osfmach3ppc') ccdlflags='-Wl,-E' ;; #esac -case "`uname -r`" in -sparc-linux) +case "`uname -m`" in +sparc*) case "$cccdlflags" in *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; + *-fPIC*) ;; *) cccdlflags="$cccdlflags -fPIC" ;; esac ;; @@ -266,10 +367,13 @@ fi cat > UU/usethreads.cbu <<'EOCBU' case "$usethreads" in $define|true|[yY]*) - ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags" - set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` - shift - libswanted="$*" + ccflags="-D_REENTRANT -D_GNU_SOURCE $ccflags" + if echo $libswanted | grep -v pthread >/dev/null + then + set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` + shift + libswanted="$*" + fi # Somehow at least in Debian 2.2 these manage to escape # the #define forest of and so that @@ -299,3 +403,66 @@ ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" ;; esac EOCBU + +# Purify fails to link Perl if a "-lc" is passed into its linker +# due to duplicate symbols. +case "$PURIFY" in +$define|true|[yY]*) + set `echo X "$libswanted "| sed -e 's/ c / /'` + shift + libswanted="$*" + ;; +esac + +# If we are using g++ we must use nm and force ourselves to use +# the /usr/lib/libc.a (resetting the libc below to an empty string +# makes Configure to look for the right one) because the symbol +# scanning tricks of Configure will crash and burn horribly. +case "$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