嵌入式平臺openFst的交叉編譯

該博文屬於系列文章，其他文章參考總覽： kaldi嵌入式平臺的移植及實現

 

前言：

openfst的介紹就不必了，大家自行百度，下面進入正題。

Openfst下載：

目前kaldi版本爲5.5，使用的openfst的版本爲openfst-1.6.7.tar.gz，進入openfst官網，找到對應的tar.gz下載，如下圖

Openfst的交叉編譯：

1. 拷貝openfst-1.6.7.tar.gz至kaldi源碼路徑下的tools/

2. 執行解壓命令 tar -zxvf openfst-1.6.7.tar.gz 

3. cd openfst-1.6.7/

4. 執行命令  CXX=mips-linux-gnu-g++ CXXFLAGS=-mxgot ./configure --prefix=`pwd` --enable-static --enable-shared --enable-ngram-fsts --host=mips-linux-gnu LIBS="-ldl"

5. make 

6. 修改/src/script/Makefile，在CXXFLAGS變量中添加 -G0   ，（注：在寫此博客時，第5步編譯完成後，已經能夠順利編譯成功，則跳過該步。 之前這樣修改可能是由於交叉工具鏈的版本不同，具體編譯錯誤的日誌沒有保存，如果第5步編譯失敗，可以再嘗試這一步後重新編譯）

7. make install

8. 創建軟鏈接： ln -s openfst-1.6.7 openfst

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關於以上命令解釋：

• --prefix 執行make install時lib庫的安裝位置爲當前位置
• --enable-static 生成靜態庫  （實際在開發板中，使用的是靜態庫，當然也可以用動態庫）
• --enable-shared 生成動態庫
• --enable-ngram-fsts ngram是語言模型相關的，可以查閱ngram相關的資料
• CXXFLAGS=-mxgot 由於編譯錯誤，具體見下面的報錯

編譯錯誤一：

報錯log： relocation truncated to fit: R_MIPS_CALL16 against `std::allocator<char>::allocator()@@GLIBCXX_3.4',  詳細log如下：

.libs/determinize.o: In function `fst::script::Determinize(fst::script::FstClass const&, fst::script::MutableFstClass*, fst::script::DeterminizeOptions const&)':
determinize.cc:(.text+0x43c): relocation truncated to fit: R_MIPS_CALL16 against `std::allocator<char>::allocator()@@GLIBCXX_3.4'
determinize.cc:(.text+0x46c): relocation truncated to fit: R_MIPS_CALL16 against `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)@@GLIBCXX_3.4.21'
determinize.cc:(.text+0x4d0): relocation truncated to fit: R_MIPS_CALL16 against `std::allocator<char>::allocator()@@GLIBCXX_3.4'
determinize.cc:(.text+0x500): relocation truncated to fit: R_MIPS_CALL16 against `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)@@GLIBCXX_3.4.21'
determinize.cc:(.text+0x56c): relocation truncated to fit: R_MIPS_CALL16 against `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()@@GLIBCXX_3.4.21'
determinize.cc:(.text+0x5b4): relocation truncated to fit: R_MIPS_CALL16 against `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()@@GLIBCXX_3.4.21'
determinize.cc:(.text+0x614): relocation truncated to fit: R_MIPS_CALL16 against `fst::script::MutableFstClass::SetProperties(unsigned long long, unsigned long long)'
determinize.cc:(.text+0x664): relocation truncated to fit: R_MIPS_CALL16 against `std::allocator<char>::allocator()@@GLIBCXX_3.4'
determinize.cc:(.text+0x690): relocation truncated to fit: R_MIPS_CALL16 against `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)@@GLIBCXX_3.4.21'
determinize.cc:(.text+0x6f0): relocation truncated to fit: R_MIPS_CALL16 against `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()@@GLIBCXX_3.4.21'
.libs/determinize.o: In function `__static_initialization_and_destruction_0(int, int)':
determinize.cc:(.text+0x7c0): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status
Makefile:445: recipe for target 'libfstscript.la' failed
make[3]: *** [libfstscript.la] Error 1

解決方法：第4步中在變量CXXFLAGS中添加 -mxgot ，即 CXXFLAGS=-mxgot

 

如果有編譯問題，歡迎留言，一起研究解決方法。