Remove extern C blocks from lib/* internal APIs (except xxhash.h)

lib/common/error_private.h

@@ -21,10 +21,6 @@
 #include "debug.h"
 #include "zstd_deps.h"       /* size_t */
 
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 /* ****************************************
 *  Compiler-specific
 ******************************************/
@@ -159,8 +155,4 @@ void _force_has_format_string(const char *format, ...) {
         }                                                                          \
     } while(0)
 
-#if defined (__cplusplus)
-}
-#endif
-
 #endif /* ERROR_H_MODULE */

lib/common/huf.h

@@ -21,10 +21,6 @@
 #define FSE_STATIC_LINKING_ONLY
 #include "fse.h"
 
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 /* ***   Tool functions *** */
 #define HUF_BLOCKSIZE_MAX (128 * 1024)   /**< maximum input size for a single block compressed with HUF_compress */
 size_t HUF_compressBound(size_t size);   /**< maximum compressed size (worst case) */
@@ -278,8 +274,4 @@ size_t HUF_readDTableX1_wksp(HUF_DTable* DTable, const void* src, size_t srcSize
 size_t HUF_readDTableX2_wksp(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int flags);
 #endif
 
-#if defined (__cplusplus)
-}
-#endif
-
 #endif   /* HUF_H_298734234 */

lib/common/mem.h

@@ -72,11 +72,6 @@
   typedef   signed long long  S64;
 #endif
 
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 /*-**************************************************************
 *  Memory I/O API
 *****************************************************************/
@@ -424,9 +419,4 @@ MEM_STATIC void MEM_writeBEST(void* memPtr, size_t val)
 /* code only tested on 32 and 64 bits systems */
 MEM_STATIC void MEM_check(void) { DEBUG_STATIC_ASSERT((sizeof(size_t)==4) || (sizeof(size_t)==8)); }
 
-
-#if defined (__cplusplus)
-}
-#endif
-
 #endif /* MEM_H_MODULE */

lib/common/pool.h

@@ -16,10 +16,6 @@
 #define ZSTD_STATIC_LINKING_ONLY   /* ZSTD_customMem */
 #include "../zstd.h"
 
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 typedef struct POOL_ctx_s POOL_ctx;
 
 /*! POOL_create() :
@@ -82,9 +78,4 @@ void POOL_add(POOL_ctx* ctx, POOL_function function, void* opaque);
  */
 int POOL_tryAdd(POOL_ctx* ctx, POOL_function function, void* opaque);
 
-
-#if defined (__cplusplus)
-}
-#endif
-
 #endif

lib/common/threading.h

@@ -56,11 +56,6 @@
 #define ZSTD_pthread_cond_signal(a)     WakeConditionVariable((a))
 #define ZSTD_pthread_cond_broadcast(a)  WakeAllConditionVariable((a))
 
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 /* ZSTD_pthread_create() and ZSTD_pthread_join() */
 typedef HANDLE ZSTD_pthread_t;
 
@@ -73,20 +68,10 @@ int ZSTD_pthread_join(ZSTD_pthread_t thread);
  * add here more wrappers as required
  */
 
-
-#if defined (__cplusplus)
-}
-#endif
-
 #elif defined(ZSTD_MULTITHREAD)    /* posix assumed ; need a better detection method */
 /* ===   POSIX Systems   === */
 #  include <pthread.h>
 
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 #if DEBUGLEVEL < 1
 
 #define ZSTD_pthread_mutex_t            pthread_mutex_t
@@ -133,17 +118,9 @@ int ZSTD_pthread_cond_destroy(ZSTD_pthread_cond_t* cond);
 
 #endif
 
-#if defined (__cplusplus)
-}
-#endif
-
 #else  /* ZSTD_MULTITHREAD not defined */
 /* No multithreading support */
 
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 typedef int ZSTD_pthread_mutex_t;
 #define ZSTD_pthread_mutex_init(a, b)   ((void)(a), (void)(b), 0)
 #define ZSTD_pthread_mutex_destroy(a)   ((void)(a))
@@ -159,10 +136,6 @@ typedef int ZSTD_pthread_cond_t;
 
 /* do not use ZSTD_pthread_t */
 
-#if defined (__cplusplus)
-}
-#endif
-
 #endif /* ZSTD_MULTITHREAD */
 
 

lib/common/zstd_internal.h

@@ -39,10 +39,6 @@
 #  define ZSTD_TRACE 0
 #endif
 
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 /* ---- static assert (debug) --- */
 #define ZSTD_STATIC_ASSERT(c) DEBUG_STATIC_ASSERT(c)
 #define ZSTD_isError ERR_isError   /* for inlining */
@@ -385,8 +381,4 @@ MEM_STATIC int ZSTD_cpuSupportsBmi2(void)
     return ZSTD_cpuid_bmi1(cpuid) && ZSTD_cpuid_bmi2(cpuid);
 }
 
-#if defined (__cplusplus)
-}
-#endif
-
 #endif   /* ZSTD_CCOMMON_H_MODULE */

lib/common/zstd_trace.h

@@ -13,10 +13,6 @@
 
 #include <stddef.h>
 
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
 /* weak symbol support
  * For now, enable conservatively:
  * - Only GNUC
@@ -157,8 +153,4 @@ ZSTD_WEAK_ATTR void ZSTD_trace_decompress_end(
 
 #endif /* ZSTD_TRACE */
 
-#if defined (__cplusplus)
-}
-#endif
-
 #endif /* ZSTD_TRACE_H */