2010-01-22 Doug Kwan <dougkwan@google.com>

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

diff --git a/gold/configure.ac b/gold/configure.ac
index 0a535987d914fda02ec71eb001f8db8a037330bf..7102670dedf130d70190604ed0e053d7cacdedcd 100644 (file)
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -151,6 +151,12 @@ for targ in $target $canon_targets; do
        default_size=$targ_size
        default_big_endian=$targ_big_endian
        default_osabi=$targ_osabi
+
+       AM_CONDITIONAL(DEFAULT_TARGET_ARM, test "$targ_obj" = "arm")
+       AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386")
+       AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc")
+       AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc")
+       AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$targ_obj" = "x86_64")
       fi
     fi
   fi
@@ -221,8 +227,20 @@ AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
     *) true;;
   esac])
 
+dnl Test for gcc 4.1 or later.  Full support for -mcmodel=medium is
+dnl only available in gcc 4.1.
+AC_CACHE_CHECK([for gcc >= 4.1], [gold_cv_prog_gcc41],
+[AC_COMPILE_IFELSE([
+#if !defined __GNUC__
+error
+#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1)
+error
+#endif
+], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
+
 dnl Whether we can test -mcmodel=medium.
-AM_CONDITIONAL(MCMODEL_MEDIUM, [test "$target_cpu" = "x86_64"])
+AM_CONDITIONAL(MCMODEL_MEDIUM,
+[test "$target_cpu" = "x86_64" -a "$gold_cv_prog_gcc41" = "yes"])
 
 dnl Test for __thread support.
 AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
@@ -306,7 +324,7 @@ AC_SUBST(RANDOM_SEED_CFLAGS)
 
 AM_BINUTILS_WARNINGS
 
-WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
+WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`
 AC_SUBST(WARN_CXXFLAGS)
 
 dnl Force support for large files by default.  This may need to be
@@ -332,7 +350,7 @@ AC_LANG_PUSH(C++)
 AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
 AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
 AC_CHECK_HEADERS(byteswap.h)
-AC_CHECK_FUNCS(mallinfo posix_fallocate)
+AC_CHECK_FUNCS(mallinfo posix_fallocate readv sysconf times)
 AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp, strndup, memmem])
 
 # Use of ::std::tr1::unordered_map::rehash causes undefined symbols
@@ -364,6 +382,18 @@ if test "$gold_cv_template_attribute" = "yes"; then
            [Define if attributes work on C++ templates])
 fi
 
+dnl Check if the system has struct stat::st_mtim.
+AC_CACHE_CHECK([for struct stat::st_mtim.],
+[gold_cv_stat_st_mtim],
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#include <sys/stat.h>
+long bar() { struct stat s; return (long)(s.st_mtim.tv_sec + s.st_mtim.tv_sec);}
+]])], [gold_cv_stat_st_mtim=yes], [gold_cv_stat_st_mtim=no])])
+if test "$gold_cv_stat_st_mtim" = "yes"; then
+  AC_DEFINE(HAVE_STAT_ST_MTIM, 1,
+           [Define if struct stat has a field st_mtim with timespec for mtime])
+fi
+
 AC_LANG_POP(C++)
 
 AM_MAINTAINER_MODE