[Doxygen-develop] cmake iconv test problem with doxygen 1.8.13+ on redhat 6.3.1-1 with gcc 6.3.1

[Bonn, J. <jb...@us...>]

In cmake/FindIconv.cmake the fix is:
change
   iconv(iconv_t(-1), 0, 0, 0, 0);
to
   iconv((iconv_t)-1, 0, 0, 0, 0);
in 3 places

++++++++++++++++++++++++++++

bash-4.3$ cat test.c
#include <iconv.h>
     int main() {
        iconv(iconv_t(-1), 0, 0, 0, 0);
     }

bash-4.3$ gcc test.c
In file included from test.c:1:0:
test.c: In function ‘main’:
test.c:3:15: error: expected expression before ‘libiconv_t’
         iconv(iconv_t(-1), 0, 0, 0, 0);
               ^
In file included from test.c:1:0:
test.c:3:9: error: too few arguments to function ‘libiconv’
         iconv(iconv_t(-1), 0, 0, 0, 0);
         ^
/usr/local/include/iconv.h:82:15: note: declared here
 extern size_t iconv (iconv_t cd,  char* * inbuf, size_t *inbytesleft,
char* * outbuf, size_t *outbytesleft);
               ^
bash-4.3$ gcc --version
gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

bash-4.3$ vi test.c
bash-4.3$ cat test.c
#include <iconv.h>
     int main() {
        iconv((iconv_t)-1, 0, 0, 0, 0);
     }

bash-4.3$ gcc test.c
/tmp/ccsr6URT.o: In function `main':
test.c:(.text+0x21): undefined reference to `libiconv'
collect2: error: ld returned 1 exit status
bash-4.3$