diff --git a/renderdoc/CMakeLists.txt b/renderdoc/CMakeLists.txt
index 60c653b7e..8e150e17a 100644
--- a/renderdoc/CMakeLists.txt
+++ b/renderdoc/CMakeLists.txt
@@ -149,6 +149,7 @@ set(sources
     maths/camera.cpp
     maths/camera.h
     maths/formatpacking.h
+    maths/formatpacking.cpp
     maths/half_convert.h
     maths/matrix.cpp
     maths/matrix.h
diff --git a/renderdoc/maths/formatpacking.cpp b/renderdoc/maths/formatpacking.cpp
index 9f661bca7..a41af1034 100644
--- a/renderdoc/maths/formatpacking.cpp
+++ b/renderdoc/maths/formatpacking.cpp
@@ -23,6 +23,8 @@
  ******************************************************************************/
 
 #include "formatpacking.h"
+#include <float.h>
+#include <math.h>
 #include "common/common.h"
 
 Vec3f ConvertFromR11G11B10(uint32_t data)
diff --git a/renderdoc/maths/formatpacking.h b/renderdoc/maths/formatpacking.h
index fdd10b89e..8099be310 100644
--- a/renderdoc/maths/formatpacking.h
+++ b/renderdoc/maths/formatpacking.h
@@ -135,5 +135,7 @@ inline float ConvertLinearToSRGB(float linear)
   return 1.055f * powf(linear, 1.0f / 2.4f) - 0.055f;
 }
 
+typedef uint8_t byte;
+
 struct ResourceFormat;
 float ConvertComponent(const ResourceFormat &fmt, const byte *data);