GCC 4.7源代码字符编码与执行字符编码字符串字面？ [英] GCC 4.7 Source Character Encoding and Execution Character Encoding For String Literals?

问题描述

请问GCC 4.7在Linux / x86_64的必须通过它在C源文件通过验证并且去codeS字符串的内容默认的字符编码​​？这是可配置的？

Does GCC 4.7 on Linux/x86_64 have a default character encoding by which it validates and decodes the contents of string literals in C source files? Is this configurable?

此外，从字符串文字字符串数据链接到输出的数据段时，它有一个默认执行字符编码？这是可配置的？

Further, when linking the string data from string literals into the data section of the output does it have a default execution character encoding? Is this configurable?

在任何配置是有可能有一个源字符编码，从执行字符编码不同？ （这是将gcc的字符编码​​之间不断转code？）

In any configuration is it possible to have a source character encoding that differs from the execution character encoding? (That is will gcc ever transcode between character encodings?)

推荐答案

我不知道这些选项如何实际工作（不使用它们的ATM，我还是preFER处理字符串为只有ASCII，因为本地化的字符串来自外部文件反正所以它主要之类的东西格式字符串或文件名），但他们增加了选项，如

I don't know how well these options actually work (not using them atm; I still prefer treating string literals as 'ASCII only', since localized strings come from external files anyway so it's mostly things like format strings or filenames), but they have added options like

-fexec-charset=charset
Set the execution character set, used for string and character constants. The default
is UTF-8. charset can be any encoding supported by the system's iconv library routine. 

-fwide-exec-charset=charset
Set the wide execution character set, used for wide string and character constants.
The default is UTF-32 or UTF-16, whichever corresponds to the width of wchar_t. As
with -fexec-charset, charset can be any encoding supported by the system's iconv
library routine; however, you will have problems with encodings that do not fit
exactly in wchar_t.

-finput-charset=charset
Set the input character set, used for translation from the character set of the
input file to the source character set used by GCC. If the locale does not specify,
or GCC cannot get this information from the locale, the default is UTF-8. This can
be overridden by either the locale or this command line option. Currently the command
line option takes precedence if there's a conflict. charset can be any encoding
supported by the system's iconv library routine. 

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