GCC 4.7字符串文字的源字符编码和执行字符编码？

Question

Linux / x86_64上的GCC 4.7是否具有默认字符编码，通过它可以验证和解码C源文件中字符串文字的内容？这是可配置的吗？

此外，将字符串文字从字符串文字链接到输出的数据部分时，它是否具有默认的执行字符编码？这是可配置的吗？

在任何配置中，源字符编码都可能与执行字符编码不同吗？（那gcc会在字符编码之间进行代码转换吗？）

Answer 1

我不知道这些选项的实际效果如何（不使用atm；我仍然更喜欢将字符串文字视为“仅ASCII”，因为本地化的字符串无论如何都来自外部文件，因此大多是格式字符串或文件名之类的东西），但是它们添加了诸如

-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.