diff --git a/scripts/build.sh b/scripts/build.sh
index 6edd60bd9..8996c1db0 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 set -e
 
+git submodule update --init --recursive
+
 ROOTDIR="$(dirname "$0")/.."
 BUILDDIR="${ROOTDIR}/build"
 
diff --git a/scripts/build_emscripten.sh b/scripts/build_emscripten.sh
index 16e9078f3..12ddbb8d7 100755
--- a/scripts/build_emscripten.sh
+++ b/scripts/build_emscripten.sh
@@ -28,6 +28,8 @@
 
 set -e
 
+git submodule update --init --recursive
+
 if test -z "$1"; then
     BUILD_DIR="emscripten_build"
 else
diff --git a/scripts/ci/build.sh b/scripts/ci/build.sh
index 87138fb05..4c3140d36 100755
--- a/scripts/ci/build.sh
+++ b/scripts/ci/build.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 set -ex
 
+git submodule update --init --recursive
+
 ROOTDIR="$(dirname "$0")/../.."
 cd "${ROOTDIR}"
 
diff --git a/scripts/ci/build_emscripten.sh b/scripts/ci/build_emscripten.sh
index 55d2288c3..a58dd1850 100755
--- a/scripts/ci/build_emscripten.sh
+++ b/scripts/ci/build_emscripten.sh
@@ -34,6 +34,8 @@
 
 set -ev
 
+git submodule update --init --recursive
+
 if test -z "$1"; then
 	BUILD_DIR="emscripten_build"
 else
diff --git a/scripts/ci/build_ossfuzz.sh b/scripts/ci/build_ossfuzz.sh
index 1240b6877..74bf9be4f 100755
--- a/scripts/ci/build_ossfuzz.sh
+++ b/scripts/ci/build_ossfuzz.sh
@@ -1,6 +1,8 @@
 #!/usr/bin/env bash
 set -ex
 
+git submodule update --init --recursive
+
 ROOTDIR="/root/project"
 BUILDDIR="${ROOTDIR}/build"
 mkdir -p "${BUILDDIR}" && mkdir -p "$BUILDDIR/deps"
diff --git a/test/boostTest.cpp b/test/boostTest.cpp
index fe0820b66..4181acba7 100644
--- a/test/boostTest.cpp
+++ b/test/boostTest.cpp
@@ -218,6 +218,8 @@ void initializeOptions()
 
 }
 
+test_suite* solidity_init_unit_test_suite( int /*argc*/, char* /*argv*/[] );
+
 test_suite* solidity_init_unit_test_suite( int /*argc*/, char* /*argv*/[] )
 {
 	using namespace solidity::test;