移植leveldb到hi3519

1.编译环境

• Ubuntu16.4 + arm-hisiv500-linux-
• leveldb 下载地址：https://github.com/google/leveldb/releases

2.移植步骤

• 修改build_detect_platform文件：

  • 添加海思编译工具

if test -z "$CC"; then    CC=gccfiCXX=arm-hisiv500-linux-g++if test -z "$CXX"; then    CXX=g++fi

• 修改db/db_iter.h文件

在#endif前添加如下一行

typedef int ssize_t;
如果不定义会出现如下错误：

arm-hisiv500-linux-g++ -I. -I./include -std=c++0x -fno-builtin-memcmp -lpthread -DOS_LINUX -DLEVELDB_PLATFORM_POSIX -DLEVELDB_ATOMIC_PRESENT -O2 -DNDEBUG -fPIC -c db/db_iter.cc -o out-shared/db/db_iter.odb/db_iter.cc:107:3: error: ‘ssize_t’ does not name a type   ssize_t RandomPeriod() {   ^db/db_iter.cc:123:3: error: ‘ssize_t’ does not name a type   ssize_t bytes_counter_;   ^db/db_iter.cc: In constructor ‘leveldb::{anonymous}::DBIter::DBIter(leveldb::DBImpl*, const leveldb::Comparator*, leveldb::Iterator*, leveldb::SequenceNumber, uint32_t)’:db/db_iter.cc:60:9: error: class ‘leveldb::{anonymous}::DBIter’ does not have any field named ‘bytes_counter_’         bytes_counter_(RandomPeriod()) {         ^db/db_iter.cc:60:37: error: ‘RandomPeriod’ was not declared in this scope         bytes_counter_(RandomPeriod()) {                                     ^db/db_iter.cc: In member function ‘bool leveldb::{anonymous}::DBIter::ParseKey(leveldb::ParsedInternalKey*)’:db/db_iter.cc:132:3: error: ‘ssize_t’ was not declared in this scope   ssize_t n = k.size() + iter_->value().size();   ^db/db_iter.cc:133:3: error: ‘bytes_counter_’ was not declared in this scope   bytes_counter_ -= n;   ^db/db_iter.cc:133:21: error: ‘n’ was not declared in this scope   bytes_counter_ -= n;                     ^db/db_iter.cc:135:36: error: ‘RandomPeriod’ was not declared in this scope     bytes_counter_ += RandomPeriod();                                    ^Makefile:415: recipe for target 'out-shared/db/db_iter.o' failedmake: *** [out-shared/db/db_iter.o] Error 1

• 编译：make
• 编译后生成的库和头文件在如下目录：out-shared out-static include