AC_CONFIG_SRCDIR(ldmain.c)
AC_CANONICAL_TARGET
+AC_CANONICAL_BUILD
AC_ISC_POSIX
changequote(,)dnl
dnl "install_as_default" is set to false if gold is the default linker.
dnl "installed_linker" is the installed BFD linker name.
AC_ARG_ENABLE(gold,
-[[ --enable-gold[=ARG] build gold [ARG={both}[/{gold,ld}]]]],
+[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
[case "${enableval}" in
- yes|both/gold)
+ default)
install_as_default=no
installed_linker=ld.bfd
;;
- both|both/ld)
+ yes|no)
install_as_default=yes
installed_linker=ld.bfd
;;
AC_MSG_ERROR([invalid --enable-gold argument])
;;
esac],
-[install_as_default=ld
- installed_linker=ld])
+[install_as_default=yes
+ installed_linker=ld.bfd])
AC_SUBST(install_as_default)
AC_SUBST(installed_linker)
# host-specific stuff:
AC_PROG_CC
+AC_PROG_CXX
AC_GNU_SOURCE
AC_USE_SYSTEM_EXTENSIONS
ACX_LARGEFILE
AC_CHECK_HEADER([dlfcn.h],[],[enable_plugins=no],[AC_INCLUDES_DEFAULT])
AC_SEARCH_LIBS([dlopen],[dl],[],[enable_plugins=no],[])
AC_CHECK_FUNCS([dlopen dlsym dlclose],[],[enable_plugins=no])
+# We also support plugins on Windows (MinGW).
+if test x$enable_plugins = xno ; then
+ AC_CHECK_HEADERS([windows.h],[enable_plugins=yes],[],[AC_INCLUDES_DEFAULT])
+fi
AM_CONDITIONAL([ENABLE_PLUGINS], [test x$enable_plugins = xyes])
+AC_ARG_ENABLE(initfini-array,
+ [ --enable-initfini-array use .init_array/.fini_array sections],
+ [], [
+AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
+ gcc_cv_initfini_array, [dnl
+ if test "x${build}" = "x${target}" ; then
+ AC_RUN_IFELSE([AC_LANG_SOURCE([
+static int x = -1;
+int main (void) { return x; }
+int foo (void) { x = 0; }
+int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])],
+ [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
+ [gcc_cv_initfini_array=no])
+ else
+ gcc_cv_initfini_array=no
+ fi])
+ enable_initfini_array=$gcc_cv_initfini_array
+])
+AC_SUBST(enable_initfini_array)
+if test $enable_initfini_array = yes; then
+ AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
+ [Define .init_array/.fini_array sections are available and working.])
+fi
+
AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h,
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],