For tied file handle calls, use PUSH* when we know that the stack has space.

[p5sagit/p5-mst-13.2.git] / hints / linux.sh

diff --git a/hints/linux.sh b/hints/linux.sh
index f5c400b..d208129 100644 (file)
--- a/hints/linux.sh
+++ b/hints/linux.sh
@@ -32,7 +32,15 @@ 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
@@ -46,6 +54,9 @@ 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="$libswanted gdbm_compat"
+
 # If you have glibc, then report the version for ./myconfig bug reporting.
 # (Configure doesn't need to know the specific version since it just uses
 # gcc to load the library for all tests.)
@@ -76,17 +87,32 @@ esac
 # Check if we're about to use Intel's ICC compiler
 case "`${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 -mp1 flag is needed to pass cmp related tests
+    # 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 -mp1 -no-gcc $ccflags"
+    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"*)
-    optimize='-xO2'
+*" 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 "$optimize" || optimize='-xO2'
     cccdlflags='-KPIC'
     lddlflags='-G -Bdynamic'
     # Sun C doesn't support gcc attributes, but, in many cases, doesn't
@@ -308,12 +334,21 @@ fi
 # This script UU/usethreads.cbu will get 'called-back' by Configure
 # after it has prompted the user for whether to use threads.
 cat > UU/usethreads.cbu <<'EOCBU'
+if getconf GNU_LIBPTHREAD_VERSION | grep NPTL >/dev/null 2>/dev/null
+then
+    threadshavepids=""
+else
+    threadshavepids="-DTHREADS_HAVE_PIDS"
+fi
 case "$usethreads" in
 $define|true|[yY]*)
-        ccflags="-D_REENTRANT -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 $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 <features.h> and <time.h> so that
@@ -364,3 +399,45 @@ case "$cc" in
        ;;
 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