Cannot compile using CMake on macOS

[sgerbino]

CMakeLists.txt does not work on macOS. See error output below:

pluto:build sgerbino$ cmake ..
-- The C compiler identification is AppleClang 8.0.0.8000038
-- The CXX compiler identification is AppleClang 8.0.0.8000038
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/sgerbino/Workspace/json-c/build
pluto:build sgerbino$ make
Scanning dependencies of target json-c
[ 11%] Building C object CMakeFiles/json-c.dir/arraylist.c.o
/Users/sgerbino/Workspace/json-c/arraylist.c:26:9: warning: 'SIZE_T_MAX' macro redefined [-Wmacro-redefined]
#define SIZE_T_MAX UINT_MAX
        ^
/usr/include/i386/limits.h:98:9: note: previous definition is here
#define SIZE_T_MAX      ULONG_MAX       /* max value for a size_t */
        ^
1 warning generated.
[ 22%] Building C object CMakeFiles/json-c.dir/debug.c.o
[ 33%] Building C object CMakeFiles/json-c.dir/json_object.c.o
In file included from /Users/sgerbino/Workspace/json-c/json_object.c:30:
/Users/sgerbino/Workspace/json-c/math_compat.h:9:9: warning: 'isnan' macro redefined [-Wmacro-redefined]
#define isnan(x) _isnan(x)
        ^
/usr/include/math.h:178:9: note: previous definition is here
#define isnan(x)                                                         \
        ^
In file included from /Users/sgerbino/Workspace/json-c/json_object.c:30:
/Users/sgerbino/Workspace/json-c/math_compat.h:16:9: warning: 'isinf' macro redefined [-Wmacro-redefined]
#define isinf(x) (!_finite(x))
        ^
/usr/include/math.h:173:9: note: previous definition is here
#define isinf(x)                                                         \
        ^
In file included from /Users/sgerbino/Workspace/json-c/json_object.c:30:
/Users/sgerbino/Workspace/json-c/math_compat.h:22:9: warning: 'INFINITY' macro redefined [-Wmacro-redefined]
#define INFINITY (DBL_MAX + DBL_MAX)
        ^
/usr/include/math.h:68:9: note: previous definition is here
#define INFINITY    HUGE_VALF
        ^
In file included from /Users/sgerbino/Workspace/json-c/json_object.c:30:
/Users/sgerbino/Workspace/json-c/math_compat.h:27:9: warning: 'NAN' macro redefined [-Wmacro-redefined]
#define NAN (INFINITY - INFINITY)
        ^
/usr/include/math.h:60:15: note: previous definition is here
#   define    NAN          __builtin_nanf("0x7fc00000")
              ^
/Users/sgerbino/Workspace/json-c/json_object.c:43:3: error: You do not have snprintf on your system.
# error You do not have snprintf on your system.
  ^
/Users/sgerbino/Workspace/json-c/json_object.c:677:6: warning: implicit declaration of function '_isnan' is invalid in C99 [-Wimplicit-function-declaration]
  if(isnan(jso->o.c_double))
     ^
/Users/sgerbino/Workspace/json-c/math_compat.h:9:18: note: expanded from macro 'isnan'
#define isnan(x) _isnan(x)
                 ^
/Users/sgerbino/Workspace/json-c/json_object.c:679:11: warning: implicit declaration of function '_finite' is invalid in C99 [-Wimplicit-function-declaration]
  else if(isinf(jso->o.c_double))
          ^
/Users/sgerbino/Workspace/json-c/math_compat.h:16:20: note: expanded from macro 'isinf'
#define isinf(x) (!_finite(x))
                   ^
6 warnings and 1 error generated.
make[2]: *** [CMakeFiles/json-c.dir/json_object.c.o] Error 1
make[1]: *** [CMakeFiles/json-c.dir/all] Error 2
make: *** [all] Error 2

[hawicz]

MacOS can use configure and build normally. I'd say this is not a problem.