zsh: Fix /usr/local in $fpath (#1730)

packages/zsh/build.sh

@@ -1,12 +1,18 @@
 TERMUX_PKG_HOMEPAGE=https://www.zsh.org
 TERMUX_PKG_DESCRIPTION="Shell with lots of features"
 TERMUX_PKG_VERSION=5.4.2
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SHA256=62f5d034d5f4bbaa7a6b08f49aeb16a9c7dc327fd9b3d5a8017d08c66b1beb92
 TERMUX_PKG_SRCURL=https://fossies.org/linux/misc/zsh-${TERMUX_PKG_VERSION}.tar.xz
 # Remove hard link to bin/zsh as Android does not support hard links:
 TERMUX_PKG_RM_AFTER_INSTALL="bin/zsh-${TERMUX_PKG_VERSION}"
 TERMUX_PKG_DEPENDS="libandroid-support, ncurses, termux-tools, command-not-found"
-TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--enable-etcdir=$TERMUX_PREFIX/etc --disable-gdbm --disable-pcre ac_cv_header_utmp_h=no"
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+ac_cv_header_utmp_h=no
+--disable-gdbm
+--disable-pcre
+--enable-etcdir=$TERMUX_PREFIX/etc
+"
 TERMUX_PKG_CONFFILES="etc/zshrc"
 
 termux_step_post_configure () {

packages/zsh/configure.patch

@@ -0,0 +1,27 @@
+diff -u -r ../zsh-5.4.2/configure ./configure
+--- ../zsh-5.4.2/configure	2017-06-30 22:36:56.000000000 +0200
++++ ./configure	2017-11-01 16:00:08.601290902 +0100
+@@ -2888,21 +2888,8 @@
+ fi
+ 
+ 
+-if test X$sitefndir = X/usr/local/share/zsh/site-functions || \
+-   test X$sitefndir = Xno
+-then fixed_sitefndir=''
+-elif test X$prefix != X/usr/local; then
+-  if test X$prefix = XNONE && test X$ac_default_prefix = X/usr/local; then
+-    if test X$tzsh_name != Xzsh
+-    then fixed_sitefndir=/usr/local/share/zsh/site-functions
+-    else fixed_sitefndir=''
+-    fi
+-  else fixed_sitefndir=/usr/local/share/zsh/site-functions
+-  fi
+-elif test X$tzsh_name != Xzsh
+-then fixed_sitefndir=/usr/local/share/zsh/site-functions
+-else fixed_sitefndir=''
+-fi
++# Do not use /usr/local/share/zsh/site-functions (#1730):
++fixed_sitefndir=''
+ 
+ 
+ # Check whether --enable-function-subdirs was given.