This is the command mkc_check_decl that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
mkc_check_decl - checks for define, function, variable, type or function prototype.
SYNOPSIS
mkc_check_decl <check_type> <what> [includes...]
mkc_check_decl -h
DESCRIPTION
check_type is either define, variable, func[0-9], type, member or prototype. Depending
on its value mkc_check_decl checks for define, variable, function with specified number of
arguments, type or a member of structure in a specified header files includes by compiling
a test program. As a result it prints either 1 (success) or 0 (failure) to stdout.
OPTIONS
-h display help message
ENVIRONMENT
CC Compiler. By default cc is used.
CPPFLAGS, CFLAGS
Options passed to the compiler, for example -I for additional directories that
contain header files.
MKC_VERBOSE
If set to 1, verbose messages are output to stderr.
MKC_SHOW_CACHED
If set to 1 and MKC_VERBOSE is set to 1, cached results are output to stderr.
MKC_COMMON_HEADERS
List of header files to add to .c test program.
MKC_CACHEDIR
Directory where temporary and cache files are created. If unset they are created
in a current directory.
MKC_NOCACHE
All results are cached unless MKC_NOCACHE variable is set to 1.
MKC_DELETE_TMPFILES
If set to 1, temporary files are removed.
EXAMPLES
mkc_check_decl define __GNUC__
mkc_check_decl define RTLD_LAZY dlfcn.h
mkc_check_decl variable sys_errlist errno.h
mkc_check_decl variable __malloc_hook malloc.h
mkc_check_decl func3 poll poll.h
mkc_check_decl func2 fgetln stdio.h
mkc_check_decl type mbstate_t wchar.h
mkc_check_decl type long-long
mkc_check_decl member tm.tm_isdst time.h
mkc_check_decl member ifreq.ifr_addr.sa_len net/if.h
mkc_check_decl prototype 'int connect(int __fd, const struct sockaddr * __addr, socklen_t __len)' sys/socket.h
mkc_check_decl prototype 'int connect(int __fd, struct sockaddr * __addr, socklen_t __len)' sys/socket.h
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