On Solaris 8 with gcc I'm seeing this link error:
g++ -o test-wctype-c++ test-wctype-c++.o ../gllib/libgnu.a -lrt
Undefined first referenced
symbol in file
iswblank(long) test-wctype-c++.o
ld: fatal: Symbol referencing errors. No output written to test-wctype-c++
collect2: ld returned 1 exit status
*** Error code 1
The cause is C++ name mangling. This fixes it:
2010-12-25 Bruno Haible <br...@clisp.org>
iswblank: Fix C++ link error on Solaris 8.
* lib/wctype.in.h (iswblank): Declare using _GL_FUNCDECL_RPL or
_GL_FUNCDECL_SYS.
--- lib/wctype.in.h.orig Sat Dec 25 16:53:32 2010
+++ lib/wctype.in.h Sat Dec 25 16:52:22 2010
@@ -284,9 +284,9 @@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# define iswblank rpl_iswblank
# endif
-extern int rpl_iswblank (wint_t wc);
+_GL_FUNCDECL_RPL (iswblank, int, (wint_t wc));
# else
-extern int iswblank (wint_t wc);
+_GL_FUNCDECL_SYS (iswblank, int, (wint_t wc));
# endif
#endif
