From af4a96e2a07f48b1385ad001adb838c8594bbfe8 Mon Sep 17 00:00:00 2001
From: renjipanicker <renjipanicker@gmail.com>
Date: Mon, 24 Feb 2020 14:46:18 +0530
Subject: [PATCH] Fixed darwin build (#178)

* RSIZE_MAX is already defined by system on darwin

* MADV_HUGEPAGE is not available on darwin

* Fixed linker error 'Undefined symbol _get_ext_lib_export_apis' on darwin when building iwasm dylib
---
 core/shared/platform/darwin/bh_definition.c  | 4 ++++
 core/shared/platform/darwin/bh_platform.c    | 2 ++
 product-mini/platforms/darwin/CMakeLists.txt | 1 +
 3 files changed, 7 insertions(+)

diff --git a/core/shared/platform/darwin/bh_definition.c b/core/shared/platform/darwin/bh_definition.c
index 8fb58d2f8..f093cc9c5 100644
--- a/core/shared/platform/darwin/bh_definition.c
+++ b/core/shared/platform/darwin/bh_definition.c
@@ -5,6 +5,10 @@
 
 #include "bh_platform.h"
 
+#ifdef RSIZE_MAX
+#undef RSIZE_MAX
+#endif
+
 #define RSIZE_MAX 0x7FFFFFFF
 
 int b_memcpy_s(void * s1, unsigned int s1max, const void * s2, unsigned int n)
diff --git a/core/shared/platform/darwin/bh_platform.c b/core/shared/platform/darwin/bh_platform.c
index 4eda405b0..8a660b6d3 100755
--- a/core/shared/platform/darwin/bh_platform.c
+++ b/core/shared/platform/darwin/bh_platform.c
@@ -137,12 +137,14 @@ bh_mmap(void *hint, uint32 size, int prot, int flags)
         request_size -= size;
     }
 
+#ifndef __APPLE__
     if (size >= 2 * 1024 * 1024) {
         /* Try to use huge page to improve performance */
         if (!madvise(addr, size, MADV_HUGEPAGE))
             /* make huge page become effective */
             memset(addr, 0, size);
     }
+#endif
 
     return addr_aligned;
 }
diff --git a/product-mini/platforms/darwin/CMakeLists.txt b/product-mini/platforms/darwin/CMakeLists.txt
index b2c3ada7a..5a44af8c8 100644
--- a/product-mini/platforms/darwin/CMakeLists.txt
+++ b/product-mini/platforms/darwin/CMakeLists.txt
@@ -52,6 +52,7 @@ if (NOT DEFINED WAMR_BUILD_LIBC_WASI)
   set (WAMR_BUILD_LIBC_WASI 0)
 endif ()
 
+set (CMAKE_SHARED_LINKER_FLAGS "-Wl,-U,_get_ext_lib_export_apis")
 set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
 
 set (CMAKE_MACOSX_RPATH True)