最近想學習學習Android，就在自己到pc上裝了Ubuntu 11.04，然後按照www.android.com上的說明，進行操作。
不過，過程中也遇到了不少問題，在此做個總結。
第一次，是在進行到repo sync一步的時候，本來想避開網絡高負載時段，早上就開始下載代碼，誰知還是沒有整完，到了晚上，也就下了40%多，然後像死了一樣不動。不忍心電腦累了一天，晚上也不能休息，就把終端強制關了。第二天，由於要上班，也只能晚上來搞代碼，誰知也是搞了一會就搞不動了，也只能強制關掉。之後再repo sync，總是在10%左右的時候，就提示fetch error，然後只能強制關掉。如此反復幾次，搞的更嚴重了，網都連不上了。後來在網上搜了好多解決方案，也嘗試重新安裝網卡驅動，不過還是沒有化險為夷。沒辦法，只能重新安裝ubuntu。
這次不敢怠慢了。剛好有天夜裡兩點多醒來了，就起來，開始取android代碼，早上8點多醒來，總算取完了，之後開始編譯，不過也不是一帆風順。
開始，是編譯的時候出現以下錯誤：
/usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: 沒有該文件或目錄
解決方法：
安裝libc6-dev-i386。命令：sudo apt-get install libc6-dev-i386
當然，首先要確定系統是x86_64 GNU/Linux
使用命令：uname -a
如果得到如下的結果，說明是OK的了。
Linux mm-desktop 2.6.27-9-generic #1 SMP Thu Nov 20 22:15:32 UTC 2008 x86_64 GNU/Linux
出現如下錯誤：
cannot find -lstdc++
解決方法：
apt-get install g++-multilib
apt-get install lib32z1-dev
apt-get install lib32ncurses5-dev
接下來出現的錯誤，著實讓我費了不少勁。
錯誤內容如下：
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host C++: aidl <= out/host/linux-x86/obj/EXECUTABLES/aidl_intermediates/aidl_language_l.cpp
frameworks/base/tools/aidl/aidl_language_l.l: In function ‘int yylex()’:
frameworks/base/tools/aidl/aidl_language_l.l:58: error: ‘IMPORT’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:59: error: ‘IMPORT’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:63: error: ‘PACKAGE’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:64: error: ‘PACKAGE’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:82: error: ‘PARCELABLE’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:82: error: ‘PARCELABLE’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:83: error: ‘INTERFACE’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:83: error: ‘INTERFACE’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:84: error: ‘IN’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:84: error: ‘IN’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:85: error: ‘OUT’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:85: error: ‘OUT’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:86: error: ‘INOUT’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:86: error: ‘INOUT’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:87: error: ‘ONEWAY’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:87: error: ‘ONEWAY’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:89: error: ‘ARRAY’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:89: error: ‘ARRAY’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:91: error: ‘IDENTIFIER’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:91: error: ‘IDENTIFIER’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:93: error: ‘GENERIC’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:93: error: ‘GENERIC’ was not declared in this scope
frameworks/base/tools/aidl/aidl_language_l.l:98: error: ‘IDENTIFIER’ was not declared in this scope
make: *** [out/host/linux-x86/obj/EXECUTABLES/aidl_intermediates/aidl_language_l.o] 錯誤 1
--------------------------------------------------------------------------------------------
網上搜尋解決方案，有位老兄說，改下文件build/core/definitions.mk，可以解決。
方案：
The solution - at least for me - is simply to remove the offending lines *
716:721* in *build/core/definitions.mk* (I am speaking about the version
committed on Sun, 16 Jan 2011 18:14:04 UTC<http://android.git.kernel.org/?p=platform/build.git;a=blob;f=core/def...>
)
我的代碼比較新，然後就找到了該文件 Sun, 16 Jan 2011 18:14:04 UTC時的提交，找到了對應的語句，修改之後，make，error依舊。該藥方對我無效。
繼續搜尋，有位老兄說，在apt-get instal flex之前，rm -rf out/就OK了。
方案：
user should rm -rf out/ when apt-get instal flex and software
requirements compile needed by android
按照該方案，執行了下rm -rf out/，然後再apt-get instal flex，果然藥到病除。
先總結以上。
有教訓了再繼續追加。
