gdbsupport/configure.ac: source development.sh

[Commit message by Simon Marchi]

The GDB build in non-development mode (turn development to false in
bfd/development.sh if you want to try) is currently broken:

      CXXLD  gdb
    /home/smarchi/src/binutils-gdb/gdb/disasm-selftests.c:218: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdb/disasm-selftests.c:220: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdb/dwarf2/frame.c:2310: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdb/gdbarch-selftests.c:168: error: undefined reference to 'selftests::register_test_foreach_arch(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, void (*)(gdbarch*))'
    /home/smarchi/src/binutils-gdb/gdbsupport/selftest.cc:96: error: undefined reference to 'selftests::reset()'

This is because the gdbsupport configure script doesn't source
bfd/development.sh to set the development variable.  When $development
is unset, GDB_AC_SELFTEST defaults to enabling selftests.  I don't think
the macro was written with this intention in mind, it just happens to be
that way.

So gdbsupport thinks selftests are enabled, while gdb thinks they are
disabled.  gdbsupport compiles in code that calls selftests:: functions,
which are normally provided by gdb, but gdb doesn't provide them, hence
the undefined references.

Fix this by sourcing bfd/development.sh in gdbsupport/configure.ac, so
that the development variable is set.

gdbsupport/ChangeLog:

        * configure.ac: Added call development.sh.
        * configure: Regenerate.

1 files changed, 3 insertions, 0 deletions

diff --git a/gdbsupport/configure b/gdbsupport/configure
index a4871f8d5bc..e7a99e3ddfb 100755
--- a/gdbsupport/configure
+++ b/gdbsupport/configure
@@ -6569,6 +6569,9 @@ fi
 am_cv_prog_cc_stdc=$ac_cv_prog_cc_stdc
 
 
+# Set the 'development' global.
+. $srcdir/../bfd/development.sh
+
 # We require a C++11 compiler.  Check if one is available, and if
 # necessary, set CXX_DIALECT to some -std=xxx switch.