* libtool.m4 (AC_LIBTOOL_SYS_MAX_CMD_LEN): Use quotes on

[pf3gnuchains/gcc-fork.git] / libtool.m4

diff --git a/libtool.m4 b/libtool.m4
index 9e3314c..d83e37a 100644 (file)
--- a/libtool.m4
+++ b/libtool.m4
@@ -103,6 +103,8 @@ AC_REQUIRE([AC_OBJEXT])dnl
 AC_REQUIRE([AC_EXEEXT])dnl
 dnl
 
+AC_LIBTOOL_SYS_MAX_CMD_LEN
+
 # Only perform the check for file, if the check method requires it
 case $deplibs_check_method in
 file_magic*)
@@ -199,7 +201,7 @@ x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*|s390*-*linux*|sparc*-*linux*)
         x86_64-*linux*)
           LD="${LD-ld} -m elf_i386"
           ;;
-        ppc64-*linux*)
+        ppc64-*linux*|powerpc64-*linux*)
           LD="${LD-ld} -m elf32ppclinux"
           ;;
         s390x-*linux*)
@@ -279,6 +281,65 @@ ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],
 esac
 ])
 
+
+# AC_LIBTOOL_SYS_MAX_CMD_LEN
+# --------------------------
+AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN],
+[# find the maximum length of command line arguments
+AC_MSG_CHECKING([the maximum length of command line arguments])
+AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
+  i=0
+  teststring="ABCD"
+
+  case $build_os in
+  msdosdjgpp*)
+    # On DJGPP, this test can blow up pretty badly due to problems in libc
+    # (any single argument exceeding 2000 bytes causes a buffer overrun
+    # during glob expansion).  Even if it were fixed, the result of this
+    # check would be larger than it should be.
+    lt_cv_sys_max_cmd_len=12288;    # 12K is about right
+    ;;
+
+  cygwin* | mingw*)
+    # On Win9x/ME, this test blows up -- it succeeds, but takes
+    # about 5 minutes as the teststring grows exponentially.
+    # Worse, since 9x/ME are not pre-emptively multitasking,
+    # you end up with a "frozen" computer, even though with patience
+    # the test eventually succeeds (with a max line length of 256k).
+    # Instead, let's just punt: use the minimum linelength reported by
+    # all of the supported platforms: 8192 (on NT/2K/XP).
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  amigaos*)
+    # On AmigaOS with pdksh, this test takes hours, literally.
+    # So we just punt and use a minimum line length of 8192.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+    # This has been around since 386BSD, at least.  Likely further.
+    if test -x /sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+    elif test -x /usr/sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+    else
+      lt_cv_sys_max_cmd_len=65536 # usable default for *BSD
+    fi
+    # And add a safety zone
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    ;;
+  esac
+])
+if test -n "$lt_cv_sys_max_cmd_len" ; then
+  AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
+else
+  AC_MSG_RESULT(none)
+fi
+])# AC_LIBTOOL_SYS_MAX_CMD_LEN
+
+
 # AC_LIBTOOL_DLOPEN - enable checks for dlopen support
 AC_DEFUN([AC_LIBTOOL_DLOPEN], [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])])
 
@@ -607,6 +668,7 @@ cygwin* | mingw* |pw32*)
   ;;
 
 darwin* | rhapsody*)
+  # this will be overwritten by pass_all, but leave it in just in case
   lt_cv_deplibs_check_method='file_magic Mach-O dynamically linked shared library'
   lt_cv_file_magic_cmd='/usr/bin/file -L'
   case "$host_os" in
@@ -617,9 +679,10 @@ darwin* | rhapsody*)
     lt_cv_file_magic_test_file='/usr/lib/libSystem.dylib'
     ;;
   esac
+  lt_cv_deplibs_check_method=pass_all
   ;;
 
-freebsd* )
+freebsd* | kfreebsd*-gnu)
   if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then
     case $host_cpu in
     i*86 )
@@ -677,17 +740,10 @@ irix5* | irix6*)
 
 # This must be Linux ELF.
 linux-gnu*)
-  case $host_cpu in
-  alpha* | mips* | hppa* | i*86 | powerpc* | sparc* | ia64* )
-    lt_cv_deplibs_check_method=pass_all ;;
-  *)
-    # glibc up to 2.1.1 does not perform some relocations on ARM
-    lt_cv_deplibs_check_method=['file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )'] ;;
-  esac
-  lt_cv_file_magic_test_file=`echo /lib/libc.so* /lib/libc-*.so`
+  lt_cv_deplibs_check_method=pass_all
   ;;
 
-netbsd*)
+netbsd* | knetbsd*-gnu)
   if echo __ELF__ | $CC -E - | grep __ELF__ > /dev/null; then
     [lt_cv_deplibs_check_method='match_pattern /lib[^/\.]+\.so\.[0-9]+\.[0-9]+$']
   else
@@ -780,8 +836,9 @@ AC_DEFUN([AC_CHECK_LIBM],
 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
 LIBM=
 case $host in
-*-*-beos* | *-*-cygwin* | *-*-pw32*)
+*-*-beos* | *-*-cygwin* | *-*-pw32* | *-*-darwin*)
   # These system don't have libm
+  # on darwin the libm is a symbolic link to libSystem.dylib
   ;;
 *-ncr-sysv4.3*)
   AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")