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Re: XOPEN_SOURCE and strings.h


On 1/11/2013 10:47 PM, Denis Excoffier wrote:
Hello,

In order to compile some packages (including slang-2.2.4 and ccrypt-1.9)
with GCC-4.7.2, i had to patch /usr/include/string.h iaw the following:


diff -uNr x-o/usr/include/string.h x-p/usr/include/string.h --- x-o/usr/include/string.h 2012-11-23 14:40:09.000000000 +0100 +++ x-p/usr/include/string.h 2013-01-11 22:29:39.000000000 +0100 @@ -64,13 +64,13 @@ char *_EXFUN(strcasestr,(const char *, const char *)); char *_EXFUN(strchrnul,(const char *, int)); #endif -#if !defined(__STRICT_ANSI__) || (_XOPEN_SOURCE >= 500) +#if !defined(__STRICT_ANSI__) || ((_XOPEN_SOURCE - 0) >= 500) char *_EXFUN(strdup,(const char *)); #endif #ifndef __STRICT_ANSI__ char *_EXFUN(_strdup_r,(struct _reent *, const char *)); #endif -#if !defined(__STRICT_ANSI__) || (_XOPEN_SOURCE >= 700) +#if !defined(__STRICT_ANSI__) || ((_XOPEN_SOURCE - 0) >= 700) char *_EXFUN(strndup,(const char *, size_t)); #endif #ifndef __STRICT_ANSI__



See also /usr/include/sys/features.h.

Otherwise i obtain the message:

/usr/include/string.h:67:49: error: operator '>=' has no left operand
/usr/include/string.h:73:49: error: operator '>=' has no left operand

Hope this helps,

Regards,

Denis Excoffier.



are you sure about that file ? _XOPEN_SOURCE is not present on string.h


$ cygcheck -f /usr/include/string.h cygwin-1.7.17-1

$ grep XOPEN /usr/include/string.h


Regards Marco



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