* i386-linux-tdep.c (I386_LINUX_RECORD_SIZE_*,

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

diff --git a/gold/configure.ac b/gold/configure.ac
index 96733e43158dc66b7b3973a7429b752f25c44a11..cf59a6a6bcfa03709e51e67d7bef590005141f5d 100644 (file)
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -53,6 +53,20 @@ if test "$threads" = "yes"; then
 fi
 AM_CONDITIONAL(THREADS, test "$threads" = "yes")
 
+AC_ARG_ENABLE([plugins],
+[  --enable-plugins        linker plugins],
+[case "${enableval}" in
+  yes | "") plugins=yes ;;
+  no) plugins=no ;;
+  *) plugins=yes ;;
+ esac],
+[plugins=no])
+if test "$plugins" = "yes"; then
+  AC_DEFINE(ENABLE_PLUGINS, 1,
+           [Define to enable linker plugins])
+fi
+AM_CONDITIONAL(PLUGINS, test "$plugins" = "yes")
+
 AC_ARG_ENABLE([targets],
 [  --enable-targets        alternative target configurations],
 [case "${enableval}" in
@@ -89,6 +103,7 @@ all_targets=
 default_machine=
 default_size=
 default_big_endian=
+default_osabi=ELFOSABI_NONE
 targ_32_little=
 targ_32_big=
 targ_64_little=
@@ -135,6 +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
@@ -170,6 +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
@@ -248,18 +266,18 @@ CFLAGS="$save_CFLAGS"
 AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes")
 
 dnl On GNU/Linux TLS descriptors are supported by the dynamic loader
-dnl only with glibc 2.5 or later.
-AC_CACHE_CHECK([for glibc >= 2.5], [gold_cv_lib_glibc25],
+dnl only with glibc 2.9 or later.
+AC_CACHE_CHECK([for glibc >= 2.9], [gold_cv_lib_glibc29],
 [AC_COMPILE_IFELSE([
 #include <features.h>
 #if !defined __GLIBC__
 error
-#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 5)
+#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 9)
 error
 #endif
-], [gold_cv_lib_glibc25=yes], [gold_cv_lib_glibc25=no])])
+], [gold_cv_lib_glibc29=yes], [gold_cv_lib_glibc29=no])])
 
-AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc25" = "yes")
+AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc29" = "yes")
 
 dnl Check whether the compiler supports constructor priorities in
 dnl attributes, which were added in gcc 4.3.
@@ -269,6 +287,20 @@ AC_CACHE_CHECK([for constructor priorities], [gold_cv_c_conprio],
 
 AM_CONDITIONAL(CONSTRUCTOR_PRIORITY, test "$gold_cv_c_conprio" = "yes")
 
+dnl Test for the -frandom-seed option.
+AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed],
+[save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -frandom-seed=foo"
+AC_COMPILE_IFELSE([int i;], [gold_cv_c_random_seed=yes],
+[gold_cv_c_random_seed=no])
+CFLAGS="$save_CFLAGS"])
+if test "$gold_cv_c_random_seed" = "yes"; then
+  # In Makefile, '$@' will be expanded to be the name of the file
+  # being built, providing a unique seed for each file.
+  RANDOM_SEED_CFLAGS=-frandom-seed=\$@
+fi
+AC_SUBST(RANDOM_SEED_CFLAGS)
+
 AM_BINUTILS_WARNINGS
 
 WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
@@ -279,7 +311,8 @@ dnl host dependent.  If build == host, we can check getconf LFS_CFLAGS.
 LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
 AC_SUBST(LFS_CFLAGS)
 
-AC_REPLACE_FUNCS(pread)
+AC_CHECK_FUNCS(chsize)
+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)])
@@ -289,7 +322,22 @@ AC_LANG_PUSH(C++)
 
 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
-AC_CHECK_FUNCS(mallinfo)
+AC_CHECK_HEADERS(byteswap.h)
+AC_CHECK_FUNCS(mallinfo posix_fallocate)
+AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp])
+
+# 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