diff -uNr blender-2.81.orig/CMakeLists.txt blender-2.81/CMakeLists.txt
--- blender-2.81.orig/CMakeLists.txt	2019-11-20 08:01:53.000000000 -0600
+++ blender-2.81/CMakeLists.txt	2019-12-16 16:11:48.216895883 -0600
@@ -183,6 +183,18 @@
   set(_init_SDL                            OFF)
   set(_init_FFTW3                          OFF)
   set(_init_OPENSUBDIV                     OFF)
+# musl-libc related checks (missing execinfo.h, and feenableexcept())
+  include(CheckIncludeFiles)
+  check_include_files(execinfo.h HAVE_EXECINFO_H)
+  if (HAVE_EXECINFO_H)
+	add_definitions(-DHAVE_EXECINFO_H)
+  endif()
+
+  include(CheckLibraryExists)
+  check_library_exists(m feenableexcept "fenv.h" HAVE_FEENABLEEXCEPT)
+  if (HAVE_FEENABLEEXCEPT)
+	add_definitions(-DHAVE_FEENABLEEXCEPT)
+  endif()
   set(_init_OPENVDB                        OFF)
   set(_init_OPENIMAGEDENOISE               OFF)
 elseif(WIN32)
diff -uNr blender-2.81.orig/intern/guardedalloc/intern/mallocn_intern.h blender-2.81/intern/guardedalloc/intern/mallocn_intern.h
--- blender-2.81.orig/intern/guardedalloc/intern/mallocn_intern.h	2019-10-21 09:04:53.000000000 -0500
+++ blender-2.81/intern/guardedalloc/intern/mallocn_intern.h	2019-12-16 16:58:38.731919708 -0600
@@ -40,7 +40,7 @@
 #undef HAVE_MALLOC_STATS
 #define USE_MALLOC_USABLE_SIZE /* internal, when we have malloc_usable_size() */
 
-#if defined(__linux__) || (defined(__FreeBSD_kernel__) && !defined(__FreeBSD__)) || \
+#if (defined(__linux__) && defined(HAVE_EXECINFO_H)) || (defined(__FreeBSD_kernel__) && !defined(__FreeBSD__)) || \
     defined(__GLIBC__)
 #  include <malloc.h>
 #  define HAVE_MALLOC_STATS
diff -uNr blender-2.81.orig/source/blender/blenlib/intern/system.c blender-2.81/source/blender/blenlib/intern/system.c
--- blender-2.81.orig/source/blender/blenlib/intern/system.c	2019-10-21 09:04:54.000000000 -0500
+++ blender-2.81/source/blender/blenlib/intern/system.c	2019-12-18 10:26:41.420185164 -0600
@@ -38,7 +38,9 @@
 #  include <dbghelp.h>
 #  pragma warning(pop)
 #else
+#if (defined(__linux__) && defined(HAVE_EXECINFO_H)) || defined(__APPLE__)
 #  include <execinfo.h>
+#endif 
 #  include <unistd.h>
 #endif
 
@@ -81,8 +83,8 @@
 {
   /* ------------- */
   /* Linux / Apple */
-#if defined(__linux__) || defined(__APPLE__)
-
+//#if defined(__linux__) || defined(__APPLE__)
+#if (defined(__linux__) && defined(HAVE_EXECINFO_H)) || defined(__APPLE__)
 #  define SIZE 100
   void *buffer[SIZE];
   int nptrs;
diff -uNr blender-2.81.orig/source/creator/creator_signals.c blender-2.81/source/creator/creator_signals.c
--- blender-2.81.orig/source/creator/creator_signals.c	2019-10-21 09:04:54.000000000 -0500
+++ blender-2.81/source/creator/creator_signals.c	2019-12-18 10:28:55.588186302 -0600
@@ -329,7 +329,8 @@
    * set breakpoints on sig_handle_fpe */
   signal(SIGFPE, sig_handle_fpe);
 
-#    if defined(__linux__) && defined(__GNUC__)
+//#    if defined(__linux__) && defined(__GNUC__)
+# if defined(__linux__) && defined(__GNUC__) && defined(HAVE_FEENABLEEXCEPT)
   feenableexcept(FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW);
 #    endif /* defined(__linux__) && defined(__GNUC__) */
 #    if defined(OSX_SSE_FPE)