licode學習之編譯篇--4
阿新 • • 發佈：2018-11-29
在上一篇中，編譯gcc，遭遇錯誤
/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
使用vim命令，檢視一下這個檔案第7行是啥
[[email protected] gcc-4.8.5]# vim /usr/include/gnu/stubs.h /* This file selects the right generated file of `__stub_FUNCTION' macros based on the architecture being compiled for.*/ #include <bits/wordsize.h> #if __WORDSIZE == 32 # include <gnu/stubs-32.h> #elif __WORDSIZE == 64 # include <gnu/stubs-64.h> #else # error "unexpected value for __WORDSIZE macro" #endif
[[email protected] gcc-4.8.5]# ls /usr/include/gnu libc-version.h lib-names.h stubs-64.h stubs.h
看目錄裡面只有stubs-64.h，看這個樣子應該是需要有_WORDSIZE巨集的值為64才可以
[[email protected] gcc-4.8.5]# vim /usr/include/bits/wordsize.h /* Determine the wordsize from the preprocessor defines. */ #if defined __x86_64__ # define __WORDSIZE 64 # define __WORDSIZE_COMPAT32 1 #else # define __WORDSIZE32 #endif
需要定義 __x86_64__巨集，在configure --help裡面，沒有找到能啟動這個巨集的定義，新增到環境變數裡面
[[email protected] gcc-4.8.5]# vim gcc/Makefile.in # IN_GCC distinguishes between code compiled into GCC itself and other # programs built during a bootstrap. # autoconf inserts -DCROSS_DIRECTORY_STRUCTURE if we are building a # cross compiler which does not use the native headers and libraries. INTERNAL_CFLAGS = -DIN_GCC -D__x86_64__ @[email protected] [[email protected] gcc-4.8.5]# ./configure [[email protected] gcc-4.8.5]# make clean [[email protected] gcc-4.8.5]# make /home/test/log4cxx/gcc-4.8.5/host-x86_64-unknown-linux-gnu/gcc/xgcc -B/home/test/log4cxx/gcc-4.8.5/host-x86_64-unknown-linux-gnu/gcc/ -B/usr/local/x86_64-unknown-linux-gnu/bin/ -B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem /usr/local/x86_64-unknown-linux-gnu/include -isystem /usr/local/x86_64-unknown-linux-gnu/sys-include -g -O2 -m32 -O2 -g -O2 -DIN_GCC -D__x86_64__ -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fpic -mlong-double-80 -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -fpic -mlong-double-80 -I. -I. -I../../../host-x86_64-unknown-linux-gnu/gcc -I../../.././libgcc -I../../.././libgcc/. -I../../.././libgcc/../gcc -I../../.././libgcc/../include -I../../.././libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS -DUSE_TLS -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c ../../.././libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS In file included from ../../.././libgcc/libgcc2.c:56:0: ../../.././libgcc/libgcc2.h:137:1: error: unable to emulate ‘TI’ typedef int TItype __attribute__ ((mode (TI))); ^ ../../.././libgcc/libgcc2.h:138:1: error: unable to emulate ‘TI’ typedef unsigned int UTItype __attribute__ ((mode (TI)));
坑還真是不少，看樣子走的路子可能不太正確
通過百度搜索，https://blog.csdn.net/youfuchen/article/details/11056993?utm_source=blogxgwz6 這個裡面使用了新的configure引數，實驗一下
[root[email protected] gcc-4.8.5]# ./configure --enable-languages=c,c++ --disable-multilib [[email protected] gcc-4.8.5]# make -j4 [[email protected] gcc-4.8.5]# make install [[email protected] gcc-4.8.5]# /usr/local/bin/gcc --version gcc (GCC) 4.8.5 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [[email protected] gcc-4.8.5]# /usr/local/bin/g++ --version g++ (GCC) 4.8.5 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [[email protected] gcc-4.8.5]# cp /usr/bin/gcc /usr/bin/gcc_old [[email protected] gcc-4.8.5]# cp /usr/bin/g++ /usr/bin/g++_old [[email protected] gcc-4.8.5]# rm /usr/bin/gcc [[email protected] gcc-4.8.5]# rm /usr/bin/g++ [[email protected] gcc-4.8.5]# ln -s /usr/local/bin/gcc /usr/bin/gcc [[email protected] gcc-4.8.5]# ln -s /usr/local/bin/g++ /usr/bin/g++
[[email protected] erizo]# cp /usr/bin/c++ /usr/bin/c++_old
[[email protected] erizo]# rm -rf /usr/bin/c++
[[email protected] erizo]# ln -s /usr/local/bin/c++ /usr/bin/c++
[[email protected] gcc-4.8.5]# gcc --version gcc (GCC) 4.8.5 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [[email protected] gcc-4.8.5]# g++ --version g++ (GCC) 4.8.5 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
OK，gcc新版本安裝完成
回到目錄，繼續編譯licode的c++程式碼
[[email protected] erizo]# ./buildProject.sh /home/test/licode-master/erizo/src/third_party/webrtc/src/webrtc/base/event_tracer.cc:169:31: error: expected ‘)’ before ‘PRIu64’ ", \"ts\": %" PRIu64 [[email protected] erizo]# vim src/third_party/webrtc/src/webrtc/base/event_tracer.cc fprintf(output_file_, "%s{ \"name\": \"%s\"" ", \"cat\": \"%s\"" ", \"ph\": \"%c\"" ", \"ts\": %PRIu64\"" //modify as this ", \"pid\": %d" #if defined(WEBRTC_WIN) ", \"tid\": %lu" #else ", \"tid\": %d" #endif // defined(WEBRTC_WIN) "%s" "}\n", [[email protected] erizo]# ./buildProject.sh In file included from /usr/include/boost/thread/pthread/mutex.hpp:11:0, from /usr/include/boost/thread/mutex.hpp:16, from /usr/include/boost/thread/pthread/thread_data.hpp:12, from /usr/include/boost/thread/thread.hpp:17, from /usr/include/boost/thread.hpp:13, from /home/test/licode-master/erizo/src/erizo/dtls/DtlsClient.cpp:7: /usr/include/boost/thread/locks.hpp: In instantiation of ‘boost::unique_lock<Mutex>& boost::unique_lock<Mutex>::operator=(boost::unique_lock<Mutex>&&) [with Mutex = boost::mutex]’: /usr/include/boost/thread/future.hpp:414:33: required from here /usr/include/boost/thread/locks.hpp:269:22: error: cannot bind ‘boost::unique_lock<boost::mutex>’ lvalue to ‘boost::unique_lock<boost::mutex>&&’ swap(temp); ^ /usr/include/boost/thread/locks.hpp:279:14: error: initializing argument 1 of ‘void boost::unique_lock<Mutex>::swap(boost::unique_lock<Mutex>&&) [with Mutex = boost::mutex]’ void swap(unique_lock&& other)
這個版本的boost比較低，看來問題可能還不少呢
[[email protected] erizo]# vim /usr/include/boost/thread/locks.hpp void swap(unique_lock& other)//modify rvalue to lvale. make "&&" to "&" { std::swap(m,other.m); std::swap(is_locked,other.is_locked); } [[email protected] erizo]# ./buildProject.sh /home/test/licode-master/erizo/src/erizo/media/ExternalOutput.cpp:38:3: error: ‘void av_register_all()’ is deprecated (declared at /home/test/licode-master/erizo/src/../../build/libdeps/build/include/libavformat/avformat.h:2043) [-Werror=deprecated-declarations] av_register_all();
看來ffmpeg的版本比較高，不相容啊，註釋掉av_register_all，忽略他。
context_->filename改為context_->url，將->codec改為->codecpar，註釋掉av_codec_close，將codecpar->pix_fmt修改為codecpar->format， 將 PIX_FMT_YUV420P修改為AV_PIX_FMT_YUV420P;註釋掉->codecpar->flags |= CODEC_FLAG_GLOBAL_HEADER;
[[email protected] erizo]# ./buildProject.sh In file included from /home/test/licode-master/erizo/src/erizo/media/SyntheticInput.h:8:0, from /home/test/licode-master/erizo/src/erizo/media/SyntheticInput.cpp:1: /home/test/licode-master/erizo/src/erizo/./MediaDefinitions.h: In constructor ‘erizo::DataPacket::DataPacket(int, const char*, int, erizo::packetType, uint64_t)’: /home/test/licode-master/erizo/src/erizo/./MediaDefinitions.h:28:34: error: ‘memcpy’ was not declared in this scope memcpy(data, data_, length_); [[email protected] erizo]# vim src/erizo/MediaDefinitions.h #include <string.h> [[email protected] erizo]# ./buildProject.sh /home/test/licode-master/erizo/src/erizo/media/codecs/VideoCodec.cpp: In constructor ‘erizo::VideoEncoder::VideoEncoder()’: /home/test/licode-master/erizo/src/erizo/media/codecs/VideoCodec.cpp:27:3: error: ‘void avcodec_register_all()’ is deprecated (declared at /home/test/licode-master/erizo/src/../../build/libdeps/build/include/libavcodec/avcodec.h:4119) [-Werror=deprecated-declarations] avcodec_register_all();
有一個ffmpeg相容問題，修改原始碼，相容新版本ffmpeg
[[email protected] erizo]# vim src/erizo/media/codecs/VideoCodec.cpp //ret = avcodec_encode_video2(vCoderContext, &pkt, cPicture, &got_packet); ret = avcodec_send_frame(vCoderContext, cPicture); got_packet = !avcodec_receive_packet(vCoderContext, &pkt);
還得註釋掉，新版本ffmpeg不支援的程式碼
[[email protected] erizo]# ./buildProject.sh /home/test/licode-master/erizo/src/../../build/libdeps/build/include/libavutil/common.h:30:2: error: #error missing -D__STDC_CONSTANT_MACROS / #define __STDC_CONSTANT_MACROS #error missing -D__STDC_CONSTANT_MACROS / #define __STDC_CONSTANT_MACROS
這個錯誤不是ffmpeg的相容問題，是一個巨集沒有定義。
因為只是在linux上面使用這些標頭檔案，直接將之定義在libavutil/common.h裡面。之後繼續修改ffmpeg的相容問題
[[email protected] erizo]# ./buildProject.sh /home/test/licode-master/erizo/src/erizo/SrtpChannel.cpp: In member function ‘bool erizo::SrtpChannel::configureSrtpSession(srtp_ctx_t**, const string&, erizo::SrtpChannel::TransmissionType)’: /home/test/licode-master/erizo/src/erizo/SrtpChannel.cpp:152:36: error: ‘memset’ was not declared in this scope memset(&policy, 0, sizeof(policy)); [[email protected] erizo]# vim src/erizo/SrtpChannel.cpp /* * Srtpchannel.cpp */ #include <string.h> //add this line #include <srtp2/srtp.h> #include <nice/nice.h> #include <string> #include "SrtpChannel.h"
繼續編譯，還會報test裡面的boost的錯誤，在報錯cpp的檔案最前面加上 #include <boost/thread/thread.hpp>
還會遇到前面遇到的錯誤，是因為編譯完成debug版本後，還會再次編譯release版本，產生錯誤，修改之，讓其正確
編譯過程真是巨慢。。。。。。。。。
OK，終於編譯完成了。
在最後，總結一下編譯的過程。
1、需要一些開源庫，並沒有自動下載編譯，比如ffmpeg
2、yum下來的開發版本軟體錯誤，比如boost的標頭檔案的程式碼錯誤
3、gcc版本不相容，這個可真是天坑。configure的引數還得再仔細研究一下
4、ffmpeg新老版本相容問題，也是一個比較大的坑
5、開源庫的一些標頭檔案缺少標準庫檔案，比如<stdio.h> <string.h>，沒有引用，導致找不到符號。也行在ubuntu上正常，我就沒有試驗了
6、在c檔案中，中間位置定義變數，尤其是在for裡面定義變數，導致編譯錯誤。
7、找不到庫的提示資訊比較不完善，必須翻看編譯指令碼原始碼才能知道，比如LOG_NOTFOUNT，如果不看原始碼，根本不知道是log4cxx找不到
幸運的是，經過不懈的努力，終於能夠正常編譯出來了。