[xslt] libxslt 1.0.33 + libxml2 2.6.0 'IS_BLANK' problem

[Justin Fletcher <justin fletcher ntlworld com>]

Hiya,

I'm building libxslt 1.0.33 against libxml2 2.6.0. I get a fatal error from
the compiler whilst compiling libxslt/xslt.c :

"c.xslt", line 66: Error: differing redefinition of #define macro IS_BLANK

xslt.c has the macro declared :

#define IS_BLANK(c) (((c) == 0x20) || ((c) == 0x09) || ((c) == 0xA) ||	\
                     ((c) == 0x0D))

However, xslt.c also includes libxml/parserInternals.h which has the
definition :

#define IS_BLANK(c)  xmlIsBlankQ(c)


I'm not sure what the behaviour of GCC is on such redefinitions, but the
Norcroft compiler (which is used for my RISC OS builds) treats a differing
redefinition as a fatal error. Such use must be #undef'd before the new
definition can be used.

Is this actually a mistake that I've made, or is this redefinition not a
problem for GCC ?

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