通过Android NDK编译C ++文件时出错

Question

I try to compile some library and get error:

In file included from *************************:
F:/include/strutils.h:40:37: error: expected ';', ',' or ')' before 'dest'
 extern void *mempcpy(void *restrict dest, const void *restrict src, size_t n);

This is strutils.h :

#ifndef HAVE_MEMPCPY
extern void *mempcpy(void *restrict dest, const void *restrict src, size_t n);
#endif

What wrong ?

Answer 1

It does not recognize the word restrict.

If it is a C file, you probably need to specify a command-line switch to tell it recognize the C99 keywords. https://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html

Alternatively,

#define restrict

or probably

#define restrict __restrict__

if strutils.h is included from a .cpp file: C++ does not have standard support for restrict , but many compilers have equivalents which usually work in both C++ and C, such as the GNU Compiler Collection __restrict__