Build rocksdb with GCC 9.4.0: # git clone https://github.com/facebook/rocksdb.git # cd rocksdb # make static_lib
Log as below: ==================================================== $DEBUG_LEVEL is 0 CC util/crc32c.o util/crc32c.cc:371:1: error: template with C linkage 371 | template<void (*CRC32)(uint64_t*, uint8_t const**)> | ^~~~~~~~ In file included from ./util/crc32c_arm64.h:16, from util/crc32c.cc:21: /usr/lib/gcc/aarch64-linux-gnu/9/include/arm_acle.h:33:1: note: ‘extern "C"’ linkage started here 33 | extern "C" { | ^~~~~~~~~~ util/crc32c.cc:503:13: error: conflicting declaration of ‘std::string rocksdb::crc32c::IsFastCrc32Supported()’ with ‘C’ linkage 503 | std::string IsFastCrc32Supported() { | ^~~~~~~~~~~~~~~~~~~~ In file included from util/crc32c.cc:12: ./util/crc32c.h:20:20: note: previous declaration with ‘C++’ linkage 20 | extern std::string IsFastCrc32Supported(); | ^~~~~~~~~~~~~~~~~~~~ util/crc32c.cc:1277:10: error: conflicting declaration of ‘uint32_t rocksdb::crc32c::Extend(uint32_t, const char*, size_t)’ with ‘C’ linkage 1277 | uint32_t Extend(uint32_t crc, const char* buf, size_t size) { | ^~~~~~ In file included from util/crc32c.cc:12: ./util/crc32c.h:25:17: note: previous declaration with ‘C++’ linkage 25 | extern uint32_t Extend(uint32_t init_crc, const char* data, size_t n); | ^~~~~~ util/crc32c.cc:1283:1: error: expected ‘}’ at end of input 1283 | } // namespace ROCKSDB_NAMESPACE | ^ In file included from ./util/crc32c_arm64.h:16, from util/crc32c.cc:21: /usr/lib/gcc/aarch64-linux-gnu/9/include/arm_acle.h:33:12: note: to match this ‘{’ 33 | extern "C" { | ^ Makefile:2272: recipe for target 'util/crc32c.o' failed make: *** [util/crc32c.o] Error 1 ===========================================================
The latest patch of GCC 9.4.0 release: https://github.com/gcc-mirror/gcc/commit/6f06be1769d45359940c60517f9d55bedd3cb1f4#diff-64cabf812b3706ffd3c5ab7c6048c3617a406f029631d0427d3cfb896fd8dbf3R32 introduce a lonely induce that build issue: #ifdef __cplusplus extern "C" { #endif
Build rocksdb with GCC 9.4.0: /github. com/facebook/ rocksdb. git
# git clone https:/
# cd rocksdb
# make static_lib
Log as below: ======= ======= ======= ======= ======= ======= === cc:371: 1: error: template with C linkage crc32c_ arm64.h: 16,
from util/crc32c.cc:21: gcc/aarch64- linux-gnu/ 9/include/ arm_acle. h:33:1: note: ‘extern "C"’ linkage started here cc:503: 13: error: conflicting declaration of ‘std::string rocksdb: :crc32c: :IsFastCrc32Sup ported( )’ with ‘C’ linkage orted() { ~~~~~~~ ~~~~~~ crc32c. h:20:20: note: previous declaration with ‘C++’ linkage orted() ; ~~~~~~~ ~~~~~~ cc:1277: 10: error: conflicting declaration of ‘uint32_t rocksdb: :crc32c: :Extend( uint32_ t, const char*, size_t)’ with ‘C’ linkage crc32c. h:25:17: note: previous declaration with ‘C++’ linkage cc:1283: 1: error: expected ‘}’ at end of input crc32c_ arm64.h: 16,
from util/crc32c.cc:21: gcc/aarch64- linux-gnu/ 9/include/ arm_acle. h:33:12: note: to match this ‘{’ ======= ======= ======= ======= ======= ======= ======= ===
=======
$DEBUG_LEVEL is 0
CC util/crc32c.o
util/crc32c.
371 | template<void (*CRC32)(uint64_t*, uint8_t const**)>
| ^~~~~~~~
In file included from ./util/
/usr/lib/
33 | extern "C" {
| ^~~~~~~~~~
util/crc32c.
503 | std::string IsFastCrc32Supp
| ^~~~~~~
In file included from util/crc32c.cc:12:
./util/
20 | extern std::string IsFastCrc32Supp
| ^~~~~~~
util/crc32c.
1277 | uint32_t Extend(uint32_t crc, const char* buf, size_t size) {
| ^~~~~~
In file included from util/crc32c.cc:12:
./util/
25 | extern uint32_t Extend(uint32_t init_crc, const char* data, size_t n);
| ^~~~~~
util/crc32c.
1283 | } // namespace ROCKSDB_NAMESPACE
| ^
In file included from ./util/
/usr/lib/
33 | extern "C" {
| ^
Makefile:2272: recipe for target 'util/crc32c.o' failed
make: *** [util/crc32c.o] Error 1
=======
The latest patch of GCC 9.4.0 release: https:/ /github. com/gcc- mirror/ gcc/commit/ 6f06be1769d4535 9940c60517f9d55 bedd3cb1f4# diff-64cabf812b 3706ffd3c5ab7c6 048c3617a406f02 9631d0427d3cfb8 96fd8dbf3R32 introduce a lonely induce that build issue:
#ifdef __cplusplus
extern "C" {
#endif