Fix macos build

.travis.yml

@@ -1,23 +1,42 @@
 # https://travis-ci.org/HearthSim/decrunch
 dist: xenial
 language: python
-
-python:
-  - 3.5
-  - 3.6
-  - 3.7
-
 cache: pip
 
+matrix:
+  include:
+    - os: linux
+      python: 3.5
+      env: CXX=g++-8
+    - os: linux
+      python: 3.6
+      env: CXX=g++-8
+    - os: linux
+      python: 3.7
+      env: CXX=g++-8
+    - os: osx
+      language: generic
+      env: CXX=g++-8 PYTHON_VERSION=3.5.7
+    - os: osx
+      language: generic
+      env: CXX=g++-8 PYTHON_VERSION=3.6.8
+    - os: osx
+      language: generic
+      env: CXX=g++-8 PYTHON_VERSION=3.7.3
+
 addons:
   apt:
     sources:
       - ubuntu-toolchain-r-test
     packages:
       - g++-8
+  homebrew:
+    packages:
+      - pyenv
+    update: true
 
-env:
-  - CXX=g++-8
+before_install:
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then pyenv install "$PYTHON_VERSION" && pyenv global "$PYTHON_VERSION"; fi
 
 install:
   - pip install --upgrade pip wheel setuptools

crn_decomp.cpp

@@ -2,9 +2,7 @@
 
 #include <string.h>
 
-#if defined(__APPLE__)
-#define malloc_usable_size malloc_size
-#else
+#if !defined(__APPLE__)
 #if defined(__FreeBSD__)
 #include <stdlib.h>
 #else

crunch/crn_decomp.h

@@ -339,8 +339,11 @@ const unsigned int cCRNHeaderMinSize = 62U;
 
 #include <stdio.h>
 #include <stdlib.h>
-#ifdef WIN32
+#if defined(WIN32)
 #include <memory.h>
+#elif defined(__APPLE__)
+#include <malloc/malloc.h>
+#define malloc_usable_size malloc_size
 #else
 #include <malloc.h>
 #endif