cmake HAVE_ICONV_ examples

libarchive/libarchive CMakeLists.txt :1102

CHECK_C_SOURCE_COMPILES(
      "#include <stdlib.h>
       #include <iconv.h>
       int main() {
          ${TRY_ICONV_CONST} char *ccp;
          iconv_t cd = iconv_open(\"\", \"\");
          iconv(cd, &ccp, (size_t *)0, (char **)0, (size_t *)0);
          iconv_close(cd);
          return 0;
       }"
     HAVE_ICONV_${LIB}_${TRY_ICONV_CONST})

libarchive/libarchive CMakeLists.txt :1116

ENDIF(HAVE_ICONV_${LIB}_${TRY_ICONV_CONST})