Fixed #21. Added extern C to support C++. Thank Tasio for the patch.

Changelog.txt

@@ -10,6 +10,8 @@ common:
 	  on github)
 	* Support "void goto_set_num_threads(int num_threads)" and "void
 	  openblas_set_num_threads(int num_threads)" when USE_OPENMP=1
+	* Added extern "C" to support C++. Thank Tasio for the patch(Refs 
+	  issue #21 on github)
 
 x86/x86_64:
 	* 

cblas.h

@@ -1,6 +1,11 @@
 #ifndef CBLAS_H
 #define CBLAS_H
 
+#ifdef __cplusplus
+extern "C" {
+	/* Assume C declarations for C++ */
+#endif  /* __cplusplus */
+
 #include <stddef.h>
 #include "common.h"
 
@@ -273,4 +278,10 @@ void cblas_zher2k(enum CBLAS_ORDER Order, enum CBLAS_UPLO Uplo, enum CBLAS_TRANS
                   double *alpha, double *A, blasint lda, double *B, blasint ldb, double beta, double *C, blasint ldc);
 
 void cblas_xerbla(blasint p, char *rout, char *form, ...);
+
+#ifdef __cplusplus
+}
+     
+#endif  /* __cplusplus */
+
 #endif

common.h

@@ -39,6 +39,11 @@
 #ifndef COMMON_H
 #define COMMON_H
 
+#ifdef __cplusplus
+extern "C" {
+	/* Assume C declarations for C++ */
+#endif  /* __cplusplus */
+
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
@@ -607,4 +612,9 @@ extern int gotoblas_profile;
 #define PRINT_DEBUG_NAME  if (readenv("GOTO_DEBUG")) fprintf(stderr, "GotoBLAS : %s\n", CHAR_NAME)
 #endif
 
+#ifdef __cplusplus
+}
+     
+#endif  /* __cplusplus */
+
 #endif