Determining if the include file io.h exists failed with the following output:
Change Dir: /home/anton/programs/libfort/tests/cmocka-1.1.0/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_2bb09/fast"
/usr/bin/make -f CMakeFiles/cmTC_2bb09.dir/build.make CMakeFiles/cmTC_2bb09.dir/build
make[1]: Entering directory '/mnt/dev_0/home/anton1987/programs/libfort/tests/cmocka-1.1.0/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_2bb09.dir/CheckIncludeFile.c.o
/usr/bin/cc    -std=gnu99 -pedantic -pedantic-errors -Wall -Wextra -Wshadow -Wmissing-prototypes -Wdeclaration-after-statement -Wunused -Wfloat-equal -Wpointer-arith -Wwrite-strings -Wformat-security -Wmissing-format-attribute -Wundef -fPIC -fstack-protector -D_GNU_SOURCE -D_LARGEFILE64_SOURCE    -o CMakeFiles/cmTC_2bb09.dir/CheckIncludeFile.c.o   -c /home/anton/programs/libfort/tests/cmocka-1.1.0/build/CMakeFiles/CMakeTmp/CheckIncludeFile.c
/home/anton/programs/libfort/tests/cmocka-1.1.0/build/CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:16: fatal error: io.h: No such file or directory
 #include <io.h>
                ^
compilation terminated.
CMakeFiles/cmTC_2bb09.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_2bb09.dir/CheckIncludeFile.c.o' failed
make[1]: *** [CMakeFiles/cmTC_2bb09.dir/CheckIncludeFile.c.o] Error 1
make[1]: Leaving directory '/mnt/dev_0/home/anton1987/programs/libfort/tests/cmocka-1.1.0/build/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_2bb09/fast' failed
make: *** [cmTC_2bb09/fast] Error 2