diff --git a/.gitattributes b/.gitattributes
index 7230f36f4..fba3b1303 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,4 @@
-
-common/test-fixtures/root/*	eol=lf
\ No newline at end of file
+* text=auto
+*.go text eol=lf
+*.sh text eol=lf
+common/test-fixtures/root/*	eol=lf
diff --git a/.gitignore b/.gitignore
index 6ab3cdfb9..0f310de91 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,4 +23,5 @@ packer-test*.log
 .idea/
 *.iml
 Thumbs.db
-/packer.exe
\ No newline at end of file
+/packer.exe
+.project
diff --git a/Makefile b/Makefile
index 0ccd547b4..45f107947 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ VET?=$(shell ls -d */ | grep -v vendor | grep -v website)
 GITSHA:=$(shell git rev-parse HEAD)
 # Get the current local branch name from git (if we can, this may be blank)
 GITBRANCH:=$(shell git symbolic-ref --short HEAD 2>/dev/null)
-GOFMT_FILES?=$$(find . -not -path "./vendor/*" -name "*.go")
+GOFMT_FILES?=find . -path ./vendor -prune -o -name "*.go"
 GOOS=$(shell go env GOOS)
 GOARCH=$(shell go env GOARCH)
 GOPATH=$(shell go env GOPATH)
@@ -58,10 +58,13 @@ dev: deps ## Build and install a development build
 	@cp $(GOPATH)/bin/packer pkg/$(GOOS)_$(GOARCH)
 
 fmt: ## Format Go code
-	@gofmt -w -s $(GOFMT_FILES)
+	@$(GOFMT_FILES) | xargs gofmt -w -s
 
 fmt-check: ## Check go code formatting
-	$(CURDIR)/scripts/gofmtcheck.sh $(GOFMT_FILES)
+	@echo "==> Checking that code complies with gofmt requirements..."
+	@echo "You can use the command: \`make fmt\` to reformat code."
+	@$(GOFMT_FILES) | xargs $(CURDIR)/scripts/gofmtcheck.sh
+	@echo "Check complete."
 
 fmt-docs:
 	@find ./website/source/docs -name "*.md" -exec pandoc --wrap auto --columns 79 --atx-headers -s -f "markdown_github+yaml_metadata_block" -t "markdown_github+yaml_metadata_block" {} -o {} \;
diff --git a/scripts/build.sh b/scripts/build.sh
index 84bd7f67d..4f55b9893 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -1,6 +1,10 @@
 #!/usr/bin/env bash
-#
+
 # This script builds the application from source for multiple platforms.
+# Determine the arch/os combos we're building for
+ALL_XC_ARCH="386 amd64 arm arm64 ppc64le"
+ALL_XC_OS="linux darwin windows freebsd openbsd solaris"
+
 set -e
 
 # Get the parent directory of where this script is.
@@ -11,54 +15,88 @@ DIR="$( cd -P "$( dirname "$SOURCE" )/.." && pwd )"
 # Change into that directory
 cd $DIR
 
-# Determine the arch/os combos we're building for
-XC_ARCH=${XC_ARCH:-"386 amd64 arm arm64 ppc64le"}
-XC_OS=${XC_OS:-linux darwin windows freebsd openbsd solaris}
-
 # Delete the old dir
 echo "==> Removing old directory..."
 rm -f bin/*
 rm -rf pkg/*
 mkdir -p bin/
 
+# helpers for Cygwin-hosted builds
+: ${OSTYPE:=`uname`}
+
+case $OSTYPE in
+    MINGW*|MSYS*|cygwin|CYGWIN*)
+        # cygwin only translates ';' to ':' on select environment variables
+        PATHSEP=';'
+        ;;
+    *)	PATHSEP=':'
+esac
+
+function convert_path() {
+    local flag
+    [ "${1:0:1}" = '-' ] && { flag="$1"; shift; }
+
+    [ -n "$1" ] || return 0
+    case ${OSTYPE:-`uname`} in
+        cygwin|CYGWIN*)
+            cygpath $flag -- "$1"
+            ;;
+        *)  echo "$1"
+    esac
+}
+
+# XXX works in MINGW?
+which go &>/dev/null || PATH+=":`convert_path "${GOROOT:?}"`/bin"
+
+OLDIFS="$IFS"
+
+# make sure GOPATH is consistent - Windows binaries can't handle Cygwin-style paths
+IFS="$PATHSEP"
+for d in ${GOPATH:-$(go env GOPATH)}; do
+    _GOPATH+="${_GOPATH:+$PATHSEP}$(convert_path --windows "$d")"
+done
+GOPATH="$_GOPATH"
+
+# locate 'gox' and traverse GOPATH if needed
+which "${GOX:=gox}" &>/dev/null || {
+    for d in $GOPATH; do
+        GOX="$(convert_path --unix "$d")/bin/gox"
+        [ -x "$GOX" ] && break || unset GOX
+    done
+}
+IFS="$OLDIFS"
+
 # Build!
 echo "==> Building..."
+
+# If in dev mode, only build for ourself
+if [ -n "${PACKER_DEV+x}" ]; then
+    XC_OS=$(go env GOOS)
+    XC_ARCH=$(go env GOARCH)
+fi
+
 set +e
-gox \
-    -os="${XC_OS}" \
-    -arch="${XC_ARCH}" \
+${GOX:?command not found} \
+    -os="${XC_OS:-$ALL_XC_OS}" \
+    -arch="${XC_ARCH:-$ALL_XC_ARCH}" \
     -osarch="!darwin/arm !darwin/arm64" \
     -ldflags "${GOLDFLAGS}" \
     -output "pkg/{{.OS}}_{{.Arch}}/packer" \
     .
 set -e
 
-# Move all the compiled things to the $GOPATH/bin
-GOPATH=${GOPATH:-$(go env GOPATH)}
-case $(uname) in
-    CYGWIN*)
-        GOPATH="$(cygpath $GOPATH)"
-        ;;
-esac
-OLDIFS=$IFS
-IFS=:
-case $(uname) in
-    MINGW*)
-        IFS=";"
-        ;;
-    MSYS*)
-        IFS=";"
-        ;;
-esac
+# trim GOPATH to first element
+IFS="$PATHSEP"
 MAIN_GOPATH=($GOPATH)
+MAIN_GOPATH="$(convert_path --unix "$MAIN_GOPATH")"
 IFS=$OLDIFS
 
 # Copy our OS/Arch to the bin/ directory
 echo "==> Copying binaries for this platform..."
 DEV_PLATFORM="./pkg/$(go env GOOS)_$(go env GOARCH)"
-for F in $(find ${DEV_PLATFORM} -mindepth 1 -maxdepth 1 -type f); do
-    cp ${F} bin/
-    cp ${F} ${MAIN_GOPATH}/bin/
+for F in $(find ${DEV_PLATFORM} -mindepth 1 -maxdepth 1 -type f 2>/dev/null); do
+    cp -v ${F} bin/
+    cp -v ${F} ${MAIN_GOPATH}/bin/
 done
 
 # Done!
diff --git a/scripts/gofmtcheck.sh b/scripts/gofmtcheck.sh
index 5b99bcdc4..cc6deb81e 100755
--- a/scripts/gofmtcheck.sh
+++ b/scripts/gofmtcheck.sh
@@ -1,14 +1,8 @@
 #!/usr/bin/env bash
 
-# Check gofmt
-echo "==> Checking that code complies with gofmt requirements..."
-gofmt_files=$(gofmt -s -l ${@})
-if [[ -n ${gofmt_files} ]]; then
-    echo 'gofmt needs running on the following files:'
-    echo "${gofmt_files}"
-    echo "You can use the command: \`make fmt\` to reformat code."
-    exit 1
-fi
-echo "Check passed."
+for f in $@; do
+  [ -n "`dos2unix 2>/dev/null < $f | gofmt -s -d`" ] && echo $f
+done
 
+# always return success or else 'make' will abort
 exit 0