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author | obrien <obrien@FreeBSD.org> | 2001-05-28 05:21:37 +0000 |
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committer | obrien <obrien@FreeBSD.org> | 2001-05-28 05:21:37 +0000 |
commit | 328e45595b12375b6d16a846069507d25086abdb (patch) | |
tree | ae2a6f4f4987889b7bd2af7bdf0b86fa580df011 /contrib/binutils/include/symcat.h | |
parent | 7fbb72605a1c3bcb81f8b6bb6297ffef30f84335 (diff) | |
download | FreeBSD-src-328e45595b12375b6d16a846069507d25086abdb.zip FreeBSD-src-328e45595b12375b6d16a846069507d25086abdb.tar.gz |
Import of GNU Binutils version 2.11.0.
Believe it or not, this is heavily stripped down.
Diffstat (limited to 'contrib/binutils/include/symcat.h')
-rw-r--r-- | contrib/binutils/include/symcat.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/contrib/binutils/include/symcat.h b/contrib/binutils/include/symcat.h index 3e27162..61ce1e9 100644 --- a/contrib/binutils/include/symcat.h +++ b/contrib/binutils/include/symcat.h @@ -19,12 +19,16 @@ #ifndef SYM_CAT_H #define SYM_CAT_H -#if defined (__STDC__) || defined (ALMOST_STDC) +#if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE) #define CONCAT2(a,b) a##b #define CONCAT3(a,b,c) a##b##c #define CONCAT4(a,b,c,d) a##b##c##d #define STRINGX(s) #s #else +/* Note one should never pass extra whitespace to the CONCATn macros, + e.g. CONCAT2(foo, bar) because traditonal C will keep the space between + the two labels instead of concatenating them. Instead, make sure to + write CONCAT2(foo,bar). */ #define CONCAT2(a,b) a/**/b #define CONCAT3(a,b,c) a/**/b/**/c #define CONCAT4(a,b,c,d) a/**/b/**/c/**/d @@ -35,6 +39,11 @@ #define XCONCAT3(a,b,c) CONCAT3(a,b,c) #define XCONCAT4(a,b,c,d) CONCAT4(a,b,c,d) +/* Note the layer of indirection here is typically used to allow + stringification of the expansion of macros. I.e. "#define foo + bar", "XSTRING(foo)", to yield "bar". Be aware that this only + works for __STDC__, not for traditional C which will still resolve + to "foo". */ #define XSTRING(s) STRINGX(s) -#endif SYM_CAT_H +#endif /* SYM_CAT_H */ |