some wrap to cpp

runtime/internal/clite/ffi/_wrap/libffi.cpp

@@ -1,5 +1,9 @@
 #include <ffi.h>
 
+extern "C" {
+
 void *llog_ffi_closure_alloc(void **code) {
     return ffi_closure_alloc(sizeof(ffi_closure), code);
 }
+
+}

runtime/internal/clite/ffi/ffi_other.go

@@ -10,7 +10,7 @@ import (
 
 const (
 	LLGoPackage = "link: $(pkg-config --libs libffi); -lffi"
-	LLGoFiles   = "$(pkg-config --cflags libffi): _wrap/libffi.c"
+	LLGoFiles   = "$(pkg-config --cflags libffi): _wrap/libffi.cpp"
 )
 
 /*

runtime/internal/clite/libuv/_wrap/libuv.cpp

@@ -1,5 +1,9 @@
 #include <uv.h>
 
+extern "C" {
+  
 int uv_tcp_get_io_watcher_fd (uv_tcp_t* handle) {
   return handle->io_watcher.fd;
-}
+}
+
+}

runtime/internal/clite/libuv/libuv.go

@@ -9,7 +9,7 @@ import (
 
 const (
 	LLGoPackage = "link: $(pkg-config --libs libuv); -luv"
-	LLGoFiles   = "$(pkg-config --cflags libuv): _wrap/libuv.c"
+	LLGoFiles   = "$(pkg-config --cflags libuv): _wrap/libuv.cpp"
 )
 
 // ----------------------------------------------

runtime/internal/clite/openssl/_wrap/openssl.cpp

@@ -1,5 +1,9 @@
 #include <openssl/crypto.h>
 
+extern "C" {
+
 void opensslFree(void *ptr) {
     OPENSSL_free(ptr);
 }
+
+}

runtime/internal/clite/openssl/openssl.go

@@ -25,7 +25,7 @@ import (
 // -----------------------------------------------------------------------------
 
 const (
-	LLGoFiles   = "$(pkg-config --cflags openssl): _wrap/openssl.c"
+	LLGoFiles   = "$(pkg-config --cflags openssl): _wrap/openssl.cpp"
 	LLGoPackage = "link: $(pkg-config --libs openssl); -lssl -lcrypto"
 )
 

runtime/internal/lib/internal/cpu/_wrap/cpu_x86.cpp

@@ -1,3 +1,6 @@
+
+extern "C" {
+
 #if defined(__GNUC__) || defined(__clang__)
 void llgo_getcpuid(unsigned int eax, unsigned int ecx,
                    unsigned int *a, unsigned int *b,
@@ -19,3 +22,5 @@ void llgo_getcpuid(unsigned int eax, unsigned int ecx,
 #else
 #error This code requires GCC or Clang
 #endif
+
+}

runtime/internal/lib/internal/cpu/cpu_x86.go

@@ -10,7 +10,7 @@ import (
 
 const (
 	LLGoPackage = "link"
-	LLGoFiles   = "_wrap/cpu_x86.c"
+	LLGoFiles   = "_wrap/cpu_x86.cpp"
 )
 
 //go:linkname c_getcpuid C.llgo_getcpuid