erlang: fix build.

dev-lang/erlang/erlang-19.3.recipe

@@ -7,7 +7,7 @@ concurrency, distribution and fault tolerance."
 HOMEPAGE="http://www.erlang.org/"
 COPYRIGHT="1997-2017 Ericsson AB"
 LICENSE="EPL"
-REVISION="2"
+REVISION="3"
 SOURCE_URI="http://www.erlang.org/download/otp_src_$portVersion.tar.gz"
 CHECKSUM_SHA256="fe4a00651db39b8542b04530a48d24b2f2e7e0b77cbe93d728c9f05325bdfe83"
 SOURCE_DIR="otp_src_$portVersion"
@@ -53,6 +53,7 @@ BUILD_REQUIRES="
 
 BUILD_PREREQUIRES="
 	cmd:bison
+	cmd:find
 	cmd:flex
 	cmd:gcc
 	cmd:make
@@ -68,7 +69,6 @@ ERLANG_CFLAGS="-DETHR_X86_OUT_OF_ORDER \
 				-DHAVE_NET_IF_DL_H \
 				-DETHR_HAVE_ETHREAD_DEFINES \
 				-DETHR_PTHREADS \
-				-DETHR_SIZEOF_PTR=4 \
 				-DHAVE_CONFIG_H \
 				-D_BSD_SOURCE=1 \
 				-I../${effectiveTargetMachineTriple} \