scripts: move build.sh into scripts

scripts/build.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+set -ue
+
+# Expect the following envvars to be set:
+# - APP
+# - VERSION
+# - COMMIT
+# - TARGET_OS
+# - LEDGER_ENABLED
+# - DEBUG
+
+# Source builder's functions library
+. /usr/local/share/cosmos-sdk/buildlib.sh
+
+# These variables are now available
+# - BASEDIR
+# - OUTDIR
+
+# Build for each os-architecture pair
+for platform in ${TARGET_PLATFORMS} ; do
+    # This function sets GOOS, GOARCH, and OS_FILE_EXT environment variables
+    # according to the build target platform. OS_FILE_EXT is empty in all
+    # cases except when the target platform is 'windows'.
+    setup_build_env_for_platform "${platform}"
+
+    make clean
+    echo Building for $(go env GOOS)/$(go env GOARCH) >&2
+    GOROOT_FINAL="$(go env GOROOT)" \
+    make build LDFLAGS=-buildid=${VERSION} COMMIT=${COMMIT}
+    mv ./build/${APP}${OS_FILE_EXT} ${OUTDIR}/${APP}-${VERSION}-$(go env GOOS)-$(go env GOARCH)${OS_FILE_EXT}
+
+    # This function restore the build environment variables to their
+    # original state.
+    restore_build_env
+done
+
+# Generate and display build report.
+generate_build_report
+cat ${OUTDIR}/build_report