weechat: Make build more robust

Avoid picking up cross-compiled executables.

packages/weechat/build.sh

@@ -6,6 +6,15 @@ TERMUX_PKG_SHA256=c78a0063eee2f4cf3e67a3ff3936cfba0ed0012b1b7e5ec381c2d981f2cb64
 TERMUX_PKG_DEPENDS="ncurses, libgcrypt, libcurl, libgnutls, libandroid-support"
 # weechat-curses is a symlink to weechat, so remove it:
 TERMUX_PKG_RM_AFTER_INSTALL="bin/weechat-curses share/icons"
-TERMUX_PKG_EXTRA_CONFIGURE_ARGS=" -DCA_FILE=$TERMUX_PREFIX/etc/tls/cert.pem -DENABLE_LUA=ON -DENABLE_MAN=ON"
-TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" -DENABLE_PYTHON3=ON -DENABLE_PERL=ON -DENABLE_TCL=OFF"
-
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+-DCA_FILE=$TERMUX_PREFIX/etc/tls/cert.pem
+-DENABLE_LUA=ON
+-DENABLE_MAN=ON
+-DENABLE_PERL=ON
+-DENABLE_PYTHON3=ON
+-DENABLE_TCL=OFF
+-DMSGFMT_EXECUTABLE=`which msgfmt`
+-DMSGMERGE_EXECUTABLE=`which msgmerge`
+-DPKG_CONFIG_EXECUTABLE=`which pkg-config`
+-DXGETTEXT_EXECUTABLE=`which xgettext`
+"