Added iconv extension in osx build

Author: Nick-S-2018

build-osx

@@ -8,7 +8,7 @@
 
 set -e
 install_deps() {
-  brew install bash curl autoconf automake bison re2c zstd git openssl zlib cmake libzip librdkafka
+  brew install bash curl autoconf automake bison re2c zstd git openssl zlib cmake libzip librdkafka libiconv
 
   OPENSSL_PREFIX="$(brew --prefix openssl)"
   LIBRDKAFKA_PREFIX="$(brew --prefix librdkafka)"
@@ -94,7 +94,7 @@ chmod +x configure
   --with-rdkafka \
 	--enable-jchash \
 	--enable-simdjson \
-  --with-openssl --with-zlib --with-zip \
+  --with-openssl --with-zlib --with-zip --with-iconv \
   --enable-filter \
   --with-curl \
   --enable-opcache \