Reorg folders and use core as ffmpeg from now on

build/x264.sh

@@ -1,20 +1,16 @@
 #!/bin/bash
 
-EXTRA_CONF_FLAGS=(
-  --disable-thread
+set -euo pipefail
+
+CONF_FLAGS=(
+  --prefix=$INSTALL_DIR           # lib installation dir
+  --host=x86-gnu                  # use x86 linux host
+  --enable-static                 # build static library
+  --disable-cli                   # disable cli build
+  --disable-asm                   # disable assembly
+  --extra-cflags="$CFLAGS"        # add extra cflags
+  ${FFMPEG_ST:+ --disable-thread} # disable thread when FFMPEG_ST is defined
 )
 
-if [[ ! -z "$FFMPEG_MT" ]]; then
-  EXTRA_CONF_FLAGS=()
-fi
-
-emconfigure ./configure \
-      --prefix=$INSTALL_DIR \
-      --host=x86-gnu \
-      --enable-static \
-      --disable-cli \
-      --disable-asm \
-      --extra-cflags="$CFLAGS" \
-      ${EXTRA_CONF_FLAGS[@]}
-
+emconfigure ./configure "${CONF_FLAGS[@]}"
 emmake make install-lib-static -j