Re: [PATCH v5 4/6] configure: Fix include and linkage issue on msys2

[Paolo Bonzini]

I'm a bit wary of this patch, the effects are quite wide-ranging. If
we move all the detection of dependencies to meson, it will take a
while but we should get a similar effect.

However, I'm testing and queuing patches 1 to 3.

Paolo

On Wed, Aug 26, 2020 at 5:13 PM <luoyonggang@gmail.com> wrote:
>
> From: Yonggang Luo <luoyonggang@gmail.com>
>
> On msys2, the -I/e/path/to/qemu -L/e/path/to/qemu are not recognized by the 
> compiler
> Cause $PWD are result posix style path such as /e/path/to/qemu that can not 
> be recognized
> by mingw gcc, and `pwd -W` are result Windows style path such as 
> E:/path/to/qemu that can
> be recognized by the mingw gcc. So we replace all $PWD with $build_path that 
> can
> building qemu under msys2/mingw environment.
>
> Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
> ---
>  configure | 28 +++++++++++++++++++---------
>  1 file changed, 19 insertions(+), 9 deletions(-)
>
> diff --git a/configure b/configure
> index b1e11397a8..3b9e79923d 100755
> --- a/configure
> +++ b/configure
> @@ -13,8 +13,13 @@ export CCACHE_RECACHE=yes
>
>  # make source path absolute
>  source_path=$(cd "$(dirname -- "$0")"; pwd)
> +build_path=$PWD
> +if [ "$MSYSTEM" = "MINGW64" -o  "$MSYSTEM" = "MINGW32" ]; then
> +source_path=$(cd "$(dirname -- "$0")"; pwd -W)
> +build_path=`pwd -W`
> +fi
>
> -if test "$PWD" = "$source_path"
> +if test "$build_path" = "$source_path"
>  then
>      echo "Using './build' as the directory for build output"
>
> @@ -346,7 +351,12 @@ ld_has() {
>      $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
>  }
>
> -if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
> +check_valid_build_path="[[:space:]:]"
> +if [ "$MSYSTEM" = "MINGW64" -o  "$MSYSTEM" = "MINGW32" ]; then
> +check_valid_build_path="[[:space:]]"
> +fi
> +
> +if printf %s\\n "$source_path" "$build_path" | grep -q 
> "$check_valid_build_path";
>  then
>    error_exit "main directory cannot contain spaces nor colons"
>  fi
> @@ -942,7 +952,7 @@ Linux)
>    linux="yes"
>    linux_user="yes"
>    kvm="yes"
> -  QEMU_INCLUDES="-isystem ${source_path}/linux-headers -I$PWD/linux-headers 
> $QEMU_INCLUDES"
> +  QEMU_INCLUDES="-isystem ${source_path}/linux-headers 
> -I${build_path}/linux-headers $QEMU_INCLUDES"
>    libudev="yes"
>  ;;
>  esac
> @@ -4283,7 +4293,7 @@ EOF
>                symlink "$source_path/dtc/Makefile" "dtc/Makefile"
>            fi
>            fdt_cflags="-I${source_path}/dtc/libfdt"
> -          fdt_ldflags="-L$PWD/dtc/libfdt"
> +          fdt_ldflags="-L${build_path}/dtc/libfdt"
>            fdt_libs="$fdt_libs"
>        elif test "$fdt" = "yes" ; then
>            # Not a git build & no libfdt found, prompt for system install
> @@ -5268,7 +5278,7 @@ case "$capstone" in
>      else
>        LIBCAPSTONE=libcapstone.a
>      fi
> -    capstone_libs="-L$PWD/capstone -lcapstone"
> +    capstone_libs="-L${build_path}/capstone -lcapstone"
>      capstone_cflags="-I${source_path}/capstone/include"
>      ;;
>
> @@ -6268,8 +6278,8 @@ case "$slirp" in
>        git_submodules="${git_submodules} slirp"
>      fi
>      mkdir -p slirp
> -    slirp_cflags="-I${source_path}/slirp/src -I$PWD/slirp/src"
> -    slirp_libs="-L$PWD/slirp -lslirp"
> +    slirp_cflags="-I${source_path}/slirp/src -I${build_path}/slirp/src"
> +    slirp_libs="-L${build_path}/slirp -lslirp"
>      if test "$mingw32" = "yes" ; then
>        slirp_libs="$slirp_libs -lws2_32 -liphlpapi"
>      fi
> @@ -8212,7 +8222,7 @@ fi
>  mv $cross config-meson.cross
>
>  rm -rf meson-private meson-info meson-logs
> -NINJA=$PWD/ninjatool $meson setup \
> +NINJA="${build_path}/ninjatool" $meson setup \
>          --prefix "${pre_prefix}$prefix" \
>          --libdir "${pre_prefix}$libdir" \
>          --libexecdir "${pre_prefix}$libexecdir" \
> @@ -8232,7 +8242,7 @@ NINJA=$PWD/ninjatool $meson setup \
>         -Dvnc=$vnc -Dvnc_sasl=$vnc_sasl -Dvnc_jpeg=$vnc_jpeg 
> -Dvnc_png=$vnc_png \
>         -Dgettext=$gettext -Dxkbcommon=$xkbcommon \
>          $cross_arg \
> -        "$PWD" "$source_path"
> +        "$build_path" "$source_path"
>
>  if test "$?" -ne 0 ; then
>      error_exit "meson setup failed"
> --
> 2.27.0.windows.1
>