X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/9e25173dec21c62906ff29f8910ff529b7282ca8..ca3d51ba62f0e2b46d3714c26711c8973a3724bb:/hints/linux.sh

diff --git a/hints/linux.sh b/hints/linux.sh
index 688c68d..956adfc 100644
--- a/hints/linux.sh
+++ b/hints/linux.sh
@@ -39,7 +39,7 @@ i_libutil='undef'
 # 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
+  case "`${cc:-cc} -V 2>&1`" in
   *catamount*) . hints/catamount.sh; return ;;
   esac
 fi
@@ -58,17 +58,10 @@ shift
 libswanted="$*"
 
 # 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
+echo $libs
+if echo " $libswanted " | grep -q ' gdbm '; then
+    # Only add if gdbm is in libswanted.
+    libswanted="$libswanted gdbm_compat"
 fi
 
 # Configure may fail to find lstat() since it's a static/inline
@@ -87,6 +80,9 @@ case "$usemymalloc" in
 '') usemymalloc='n' ;;
 esac
 
+uname_minus_m="`$run uname -m 2>/dev/null`"
+uname_minus_m="${uname_minus_m:-"$targetarch"}"
+
 # Check if we're about to use Intel's ICC compiler
 case "`${cc:-cc} -V 2>&1`" in
 *"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*)
@@ -100,7 +96,7 @@ case "`${cc:-cc} -V 2>&1`" in
     # The -no-gcc flag is needed otherwise, icc pretends (poorly) to be gcc
     ccflags="-we147 -mp -no-gcc $ccflags"
     # Prevent relocation errors on 64bits arch
-    case "`uname -m`" in
+    case "$uname_minus_m" in
 	*ia64*|*x86_64*)
 	    cccdlflags='-fPIC'
 	;;
@@ -134,7 +130,7 @@ case "$optimize" in
 # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc
 '')
     optimize='-O2'
-    case "`uname -m`" in
+    case "$uname_minus_m" in
         ppc*)
             # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy
             # with -O2 ; so downgrade to -O1.
@@ -174,7 +170,7 @@ else
 fi
 
 case "$plibpth" in
-'') plibpth=`LANG=C LC_ALL=C $gcc -print-search-dirs | grep libraries |
+'') plibpth=`LANG=C LC_ALL=C $gcc $ccflags $ldflags -print-search-dirs | grep libraries |
 	cut -f2- -d= | tr ':' $trnl | grep -v 'gcc' | sed -e 's:/$::'`
     set X $plibpth # Collapse all entries on one line
     shift
@@ -182,6 +178,32 @@ case "$plibpth" in
     ;;
 esac
 
+case "$libc" in
+'')
+# 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.
+    for p in $plibpth
+    do
+        for trylib in libc.so.6 libc.so
+        do
+            if $test -e $p/$trylib; then
+                libc=`ls -l $p/$trylib | awk '{print $NF}'`
+                if $test "X$libc" != X; then
+                    break
+                fi
+            fi
+        done
+        if $test "X$libc" != X; then
+            break
+        fi
+    done
+    ;;
+esac
+
 # Are we using ELF?  Thanks to Kenneth Albanowski <kjahds@kjahds.com>
 # for this test.
 cat >try.c <<'EOM'
@@ -202,7 +224,7 @@ main() {
 	exit(0); /* succeed (yes, it's ELF) */
 }
 EOM
-if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then
+if ${cc:-gcc} $ccflags $ldflags 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.
@@ -268,7 +290,7 @@ fi
 
 rm -f try.c a.out
 
-if /bin/sh -c exit; then
+if ${sh:-/bin/sh} -c exit; then
   echo ''
   echo 'You appear to have a working bash.  Good.'
 else
@@ -335,7 +357,7 @@ fi
 #'osfmach3ppc') ccdlflags='-Wl,-E' ;;
 #esac
 
-case "`uname -m`" in
+case "$uname_minus_m" in
 sparc*)
 	case "$cccdlflags" in
 	*-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;;
@@ -350,17 +372,55 @@ esac
 # version of -lgdbm which is a bad idea. So if we have 'nm'
 # make sure it can read the file
 # NI-S 2003/08/07
-if [ -r /usr/lib/libndbm.so  -a  -x /usr/bin/nm ] ; then
-   if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then
-    echo 'Your shared -lndbm seems to be a real library.'
-   else
-    echo 'Your shared -lndbm is not a real library.'
-    set `echo X "$libswanted "| sed -e 's/ ndbm / /'`
-    shift
-    libswanted="$*"
-   fi
-fi
+case "$nm" in
+    '') ;;
+    *)
+    for p in $plibpth
+    do
+        if $test -r $p/libndbm.so; then
+            if $nm $p/libndbm.so >/dev/null 2>&1 ; then
+                echo 'Your shared -lndbm seems to be a real library.'
+                _libndbm_real=1
+                break
+            fi
+        fi
+    done
+    if $test "X$_libndbm_real" = X; then
+        echo 'Your shared -lndbm is not a real library.'
+        set `echo X "$libswanted "| sed -e 's/ ndbm / /'`
+        shift
+        libswanted="$*"
+    fi
+    ;;
+esac
 
+# Linux on Synology.
+if [ -f /etc/synoinfo.conf -a -d /usr/syno ]; then
+    # Tested on Synology DS213 and DS413
+    #  OS version info in /etc.defaults/VERSION
+    #  http://forum.synology.com/wiki/index.php/What_kind_of_CPU_does_my_NAS_have
+    # Synology DS213 running DSM 4.3-3810-0 (2013-11-06)
+    #  CPU model Marvell Kirkwood mv6282 ARMv5te
+    #  Linux 2.6.32.12 #3810 Wed Nov 6 05:13:41 CST 2013 armv5tel GNU/Linux
+    # Synology DS413 running DSM 4.3-3810-0 (2013-11-06)
+    #  CPU model Freescale QorIQ P1022 ppc (e500v2)
+    #  linux 2.6.32.12 #3810 ppc GNU/Linux
+    # All development stuff installed with ipkg is in /opt
+    if [ "$LANG" = "" -o "$LANG" = "C" ]; then
+	echo 'Your LANG is safe'
+    else
+	echo 'Please set $LANG to "C". All other $LANG settings will cause havoc' >&4
+	LANG=C
+    fi
+    echo 'Setting up to use /opt/*' >&4
+    locincpth="/opt/include $locincpth"
+    libpth="/opt/lib $libpth"
+    libspth="/opt/lib $libspth"
+    loclibpth="/opt/lib $loclibpth"
+    # POSIX will not link without the pthread lib
+    libswanted="$libswanted pthread"
+    echo "$libswanted" >&4
+fi
 
 # This script UU/usethreads.cbu will get 'called-back' by Configure
 # after it has prompted the user for whether to use threads.
@@ -414,16 +474,6 @@ $define|true|[yY]*)
     ;;
 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
@@ -447,7 +497,7 @@ then
        DBLIB="$DBDIR/libdb.so"
        if [ -f $DBLIB ]
        then
-         if nm -u $DBLIB | grep pthread >/dev/null
+         if ${nm:-nm} -u $DBLIB | grep pthread >/dev/null
          then
            if ldd $DBLIB | grep pthread >/dev/null
            then