NAME

       mkc_check_header - detects presense of header file.

SYNOPSIS

       mkc_check_header [OPTIONS] <headers>

DESCRIPTION

       mkc_check_header  detects  presense of header file.  As a result it prints either 1 (true)
       or 0 (false) to stdout.  headers may be either a single header file or a list  of  headers
       separated  by comma.  In this case all mentioned headers are put into a single .c file and
       ${CC} is run.  By default $CC -c is used for checking.  By default,  temporary  and  cache
       files  _mkc_header_lheader_h.{c,err,res}  are  created under MKC_CACHEDIR directory. Here,
       lheader_h is the last header from comma-separated list headers.

OPTIONS

       -h     Display help message.

       -e     Use $CC -E for checking instead of $CC -c.

       -d     Delete cache file.

ENVIRONMENT

       CC     Compiler. By default cc is used.

       CPPFLAGS, CFLAGS
              Options passed to the compiler.

       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_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_header stdint.h
          mkc_check_header getopt.h
          mkc_check_header sys/types.h,sys/stat.h,fts.h

C FILE CONTENT

       #include <header1.h>
        ...
       #include <headerN.h>
       int __fake_variable;

AUTHOR

       Aleksey Cheusov <vle@gmx.net>

                                           Mar 30, 2019                       MKC_CHECK_HEADER(1)