Building Emacs on MSYS2 (was: Build failure for Emacs master)

[Angelo Graziosi <angelo.graziosi@alice.it>]

Ciao Óscar,

Óscar Fuentes wrote:
> AFAIK Angelo and others that build Emacs on MSYS2 are not using
> the PKGBUILD, but following the recipe on the Emacs' docs (possibly with
> their own personal modifications.)

really, I DO build Emacs on MSYS2 with that _PKGBUILD_ [*]. It is on 
GNU/Linux and on OSX which I use some other recipe (my build scripts..)

Regarding the image.c.diff and lread.c.diff patches...

If I remember correctly, when the mingw*imagemagick port is installed, 
'configure' tries to "build" using the imagemagick support and the build 
fails if those patches are not applied.. Maybe the patches fix the build 
with imagemagick support. But is it a real support or only a workaround 
so that the build is completed, apparently adding the support for 
imagemagick?

I have this doubt..


Ciao,
  Angelo.

---
[*] Oops.. with my modification:

$ cat mingw-w64-emacs-git/PKGBUILD
[...]

## USAGE EXAMPLES:
##
##  MAKE_OPT='-j3' MINGW_INSTALLS=mingw64 makepkg-mingw -sLf
##

: ${MAKE_OPT=}

[...]

prepare() {
   cd "${_realname}"
   patch --binary --forward -p0 < "${srcdir}/image.c.diff"
   patch --binary --forward -p0 < "${srcdir}/lread.c.diff"
   ./autogen.sh all
}

build() {
   [[ -d "${srcdir}/build-${MINGW_CHOST}" ]] && rm -rf 
"${srcdir}/build-${MINGW_CHOST}"
   mkdir -p "${srcdir}/build-${MINGW_CHOST}"
   cd "build-${MINGW_CHOST}"

   local with_wide_int='no'

   if test "${CARCH}" == 'x86_64'; then
     with_wide_int='yes'
   fi

   CPPFLAGS="-DNDEBUG -isystem ${MINGW_PREFIX}/include"
   CFLAGS="-pipe -O3 -fomit-frame-pointer -funroll-loops"
   LDFLAGS="-s -Wl,-s"
   "${srcdir}/${_realname}/configure" \
     --prefix="${MINGW_PREFIX}" \
     --build="${MINGW_CHOST}" \
     --enable-gcc-warnings=no \
     --with-wide-int="${with_wide_int}" \
     --with-sound="yes" \
     --with-file-notification="yes" \
     --without-gpm \
     --without-gconf \
     --without-gsettings \
     --without-selinux

   echo
   echo "Using MAKE_OPT = ${MAKE_OPT}"
   echo

   make ${MAKE_OPT}
}

[...]