cross-gdb with expat support

[Ray Donnelly]

On Thu, Apr 9, 2015 at 12:51 PM, Thomas T <thomasmailinglists9@gmail.com> wrote:
> FYI, with the following two patches I build a working Microsoft
> Windows cross compile toolchain including GDB.
>
>
> diff -uNr x-tools_org/bin/lib/ct-ng.1.20.0/scripts/build/debug/300-gdb.sh
> x-tools/bin/lib/ct-ng.1.20.0/scripts/build/debug/300-gdb.sh
> --- x-tools_org/bin/lib/ct-ng.1.20.0/scripts/build/debug/300-gdb.sh
> 2015-04-09 13:16:16.000000000 +0200
> +++ x-tools/bin/lib/ct-ng.1.20.0/scripts/build/debug/300-gdb.sh
> 2015-04-09 13:02:51.535477908 +0200
> @@ -16,6 +16,9 @@
>
>      if [ "${CT_GDB_CROSS}" = y ]; then
>          need_gdb_src=y
> +        if [ "${CT_TOOLCHAIN_TYPE}" = "canadian" ]; then
> +        need_expat_src=y
> +        fi
>      fi
>
>      if [ "${CT_GDB_GDBSERVER}" = "y" ]; then
> @@ -130,6 +133,26 @@
>          cd "${CT_BUILD_DIR}/build-gdb-cross"
>
>          cross_extra_config=("${extra_config[@]}")
> +
> +
> +       if [ "${CT_TOOLCHAIN_TYPE}" = "canadian" ]; then
> +            # Build libexpat
> +            CT_DoLog EXTRA "Building static cross expat"
> +            CT_mkdir_pushd "${CT_WORK_DIR}/${CT_REAL_HOST}/build-expat-cross"
> +
> +            CT_DoExecLog CFG                                \
> +        "${CT_SRC_DIR}/expat-2.1.0/configure"\
> +                --host=${CT_HOST}                       \
> +                --prefix="${CT_WORK_DIR}/${CT_REAL_HOST}/libexpat-cross"
> +
> +        CT_DoLog EXTRA "Building cross-expat"
> +        CT_DoExecLog ALL make
> +        CT_DoLog EXTRA "Install cross-expat"
> +        CT_DoExecLog ALL make install
> +            CT_Popd
> +            cross_extra_config+=("--with-libexpat-prefix=${CT_WORK_DIR}/${CT_REAL_HOST}/libexpat-cross")
> +        fi
> +
>          cross_extra_config+=("--enable-expat")
>          cross_extra_config+=("--with-expat=yes")
>          case "${CT_THREADS}" in
>
>
> diff -r -u ../4.9.2/gcc/configure ./gcc/configure
> --- 4.9.2/gcc/configure    2013-01-08 11:41:18.212779007 -0800
> +++ 4.9.2/gcc/configure    2013-01-08 11:41:49.396779627 -0800
> @@ -9252,7 +9252,7 @@
>  else
>
>  cat >>confdefs.h <<_ACEOF
> -#define caddr_t char *
> +//#define caddr_t char *
>  _ACEOF
>
>  fi
>
>
>

I think expat should be added as a companion library. I have patches
to do that if Bryan agrees that's the way to proceed.

>
>
>
> ---------- Forwarded message ----------
> From: Thomas T <thomasmailinglists9@gmail.com>
> Date: 2015-04-03 8:49 GMT+02:00
> Subject: cross-gdb with expat support
> To: crossgcc@sourceware.org
>
>
> Hi,
>
> as a lot of others before I have a problem to compile a toolchain with
> a cross-gdb. I try to build a toolchain for
>
> [EXTRA]      build  = x86_64-unknown-linux-gnu
> [EXTRA]      host   = x86_64-w64-mingw32
> [EXTRA]      target = arm-none-linux-gnueabihf
>
> The first problem I solved by myself. I removed the multiple
> definitions of caddr_t.
>
> But now I fail to build the static cross-gdb, with the well known
> error "expat is missing or unusable". Crosstool-NG is the newest one
> 1.20, I also tried git/master. I already looked for a patch/ideas at
> the mailing list, patchwork, google, tried several changes in
> 300-gdb.sh but didn't found a solution...
>
> The build PC runs on Ubuntu 14.04. And, even I do not know if it is
> required as the host is a WindowsPC I installed libexpat1-dev.
>
> Is there currently a well known problem? Which additional infos shall
> I provide, any ideas?
>
> Best Regards
> Thomas
>
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