diff --git a/.github/scripts/stb/linux.sh b/.github/scripts/stb/linux.sh
index 18ecff6..2350364 100644
--- a/.github/scripts/stb/linux.sh
+++ b/.github/scripts/stb/linux.sh
@@ -1,2 +1,5 @@
+#!/bin/bash
+set -euo pipefail
+
 # Just directly record self as root directory
 export STB_ROOT=$(pwd)
diff --git a/.github/scripts/stb/macos.sh b/.github/scripts/stb/macos.sh
index 18ecff6..2350364 100644
--- a/.github/scripts/stb/macos.sh
+++ b/.github/scripts/stb/macos.sh
@@ -1,2 +1,5 @@
+#!/bin/bash
+set -euo pipefail
+
 # Just directly record self as root directory
 export STB_ROOT=$(pwd)
diff --git a/CMake/FindSTB.cmake b/CMake/FindSTB.cmake
index 45257ff..e286d96 100644
--- a/CMake/FindSTB.cmake
+++ b/CMake/FindSTB.cmake
@@ -12,9 +12,9 @@
 if (NOT DEFINED STB_ROOT)
     set(STB_FOUND FALSE)
 else ()
-    # Look for STB_image.h in the specified STB_ROOT directory
+    # Look for stb_image.h in the specified STB_ROOT directory
     find_path(STB_INCLUDE_DIR
-        NAMES STB_image.h
+        NAMES stb_image.h
         HINTS ${STB_ROOT}
         NO_DEFAULT_PATH
     )
@@ -46,7 +46,7 @@ if (STB_FOUND)
     )
 else ()
     # If it is required, show infomations.
-    if (std_FIND_REQUIRED)
+    if (STB_FIND_REQUIRED)
         message(FATAL_ERROR "Fail to find STB library.")
     endif ()
 endif ()
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7c612d4..aaf5b94 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,7 +45,7 @@ include(CMakePackageConfigHelpers)
 # we should enable PIC (position independent code), otherwise build process will fail.
 # Also we should let all symbols in final dll be hidden (not exported) in default.
 # Because we only want export functions we ordered.
-if ((NOT WIN32) AND NEMO_BUILD_BMAP)
+if ((NOT WIN32) AND (NEMO_BUILD_BALLANCE AND NEMO_BUILD_BMAP))
     set(CMAKE_CXX_VISIBILITY_PRESET hidden)
     set(CMAKE_C_VISIBILITY_PRESET hidden)
     set(CMAKE_POSITION_INDEPENDENT_CODE True)