* gdb.texinfo (Machine Code) <disassemble-next-line>: Improve and

[deliverable/binutils-gdb.git] / gold / configure.ac

diff --git a/gold/configure.ac b/gold/configure.ac
index 134efe6b192ec41b7b9cf024866258bf7628335b..ad04fa6bb60ce97d9e6dbe25e2f15b6208239674 100644 (file)
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -103,6 +103,7 @@ all_targets=
 default_machine=
 default_size=
 default_big_endian=
+default_osabi=ELFOSABI_NONE
 targ_32_little=
 targ_32_big=
 targ_64_little=
@@ -149,6 +150,7 @@ for targ in $target $canon_targets; do
         default_machine=$targ_machine
        default_size=$targ_size
        default_big_endian=$targ_big_endian
+       default_osabi=$targ_osabi
       fi
     fi
   fi
@@ -184,6 +186,8 @@ AC_DEFINE_UNQUOTED(GOLD_DEFAULT_SIZE, $default_size,
                   [Default size (32 or 64)])
 AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian,
                   [Default big endian (true or false)])
+AC_DEFINE_UNQUOTED(GOLD_DEFAULT_OSABI, $default_osabi,
+                  [Default OSABI code])
 
 AC_PROG_CC
 AC_PROG_CXX
@@ -308,7 +312,7 @@ LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
 AC_SUBST(LFS_CFLAGS)
 
 AC_CHECK_FUNCS(chsize)
-AC_REPLACE_FUNCS(pread ftruncate)
+AC_REPLACE_FUNCS(pread ftruncate mremap ffsll)
 
 # Link in zlib if we can.  This allows us to write compressed sections.
 AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
@@ -321,6 +325,19 @@ AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
 AC_CHECK_HEADERS(byteswap.h)
 AC_CHECK_FUNCS(mallinfo posix_fallocate)
 
+# Use of ::std::tr1::unordered_map::rehash causes undefined symbols
+# at link time with some versions of GCC.
+AC_CACHE_CHECK([whether ::std::tr1::unordered_map::rehash is usable.],
+[gold_cv_unordered_map_rehash],
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <tr1/unordered_map>
+void bar() { ::std::tr1::unordered_map<int, int> x; x.rehash(10); }
+]])], [gold_cv_unordered_map_rehash=yes], [gold_cv_unordered_map_rehash=no])])
+if test "$gold_cv_unordered_map_rehash" = "yes"; then
+  AC_DEFINE(HAVE_TR1_UNORDERED_MAP_REHASH, 1,
+           [Define if ::std::tr1::unordered_map::rehash is usable])
+fi
+
 # gcc 4.3.0 doesn't recognize the printf attribute on a template
 # function.  Check for that.  This is gcc bug 35546.  This test can
 # probably be removed after the bug has been fixed for a while.