Add INT signal handler to accelerate quitting when asked by the user

Print the required version of the missing packages
Check the status code of curl download and abort when failed

devscripts/setup_development_environment.sh

@@ -111,7 +111,8 @@ install_go() {
     GOLANG_TARBALL_FNAME="go$GO_VERSION.$os-$arch.tar.gz"
     GOLANG_TARBALL_URL="https://storage.googleapis.com/golang/$GOLANG_TARBALL_FNAME"
 
-    call curl --progress-bar -C - $GOLANG_TARBALL_URL -o $MINIO_DEV/dls/$GOLANG_TARBALL_FNAME
+    status_code=$(curl -w '%{http_code}' --progress-bar -L -C - $GOLANG_TARBALL_URL -o $MINIO_DEV/dls/$GOLANG_TARBALL_FNAME)
+    [[ "200 416" =~ $status_code ]] || die "Download failed. Abort installation."
 
     call tar -xf $MINIO_DEV/dls/$GOLANG_TARBALL_FNAME -C $MINIO_DEV/deps
 }
@@ -123,7 +124,8 @@ install_yasm() {
     YASM_TARBALL_FNAME="yasm-$YASM_VERSION.tar.gz"
     YASM_TARBALL_URL="http://www.tortall.net/projects/yasm/releases/$YASM_TARBALL_FNAME"
 
-    curl --progress-bar -C - $YASM_TARBALL_URL -o $MINIO_DEV/dls/$YASM_TARBALL_FNAME
+    status_code=$(curl -w '%{http_code}' --progress-bar -L -C - $YASM_TARBALL_URL -o $MINIO_DEV/dls/$YASM_TARBALL_FNAME)
+    [[ "200 416" =~ $status_code ]] || die "Download failed. Abort installation."
 
     call tar -xf $MINIO_DEV/dls/$YASM_TARBALL_FNAME -C $MINIO_DEV/deps/
     push_dir $MINIO_DEV/deps/yasm-$YASM_VERSION
@@ -166,6 +168,8 @@ install_minio() {
 
 main() {
 
+    trap 'die "Ctrl-C pressed. Quitting.."' INT
+
     # Check supported arch
     is_supported_arch
 
@@ -176,13 +180,13 @@ main() {
     push_dir ${MINIO_DEV}
 
     check_version "$(env pip --version  | awk {'print $2'})" ${PIP_VERSION}
-    [[ $? -ge 2 ]] && die "pip not installed"
+    [[ $? -ge 2 ]] && die "pip(${PIP_VERSION}) not installed. Abort."
 
     check_version "$(env gcc --version | sed 's/^.* \([0-9.]*\).*$/\1/' | head -1)" ${GCC_VERSION}
-    [[ $? -ge 2 ]] && die "gcc not installed"
+    [[ $? -ge 2 ]] && die "gcc(${GCC_VERSION}) not installed. Abort."
 
     check_version "$(env git --version | sed 's/^.* \([0-9.]*\).*$/\1/')" ${GIT_VERSION}
-    [[ $? -ge 2 ]] && die "Git not installed"
+    [[ $? -ge 2 ]] && die "git${GIT_VERSION} not installed. Abort."
 
     check_version "$(env go version 2>/dev/null | sed 's/^.* go\([0-9.]*\).*$/\1/')" ${GOLANG_VERSION}
     [[ $? -le 1 ]] && \