#Xcode project build settings code#
#Xcode project build settings iso#

For example, warnings are given with -Wformat for bad calls to printf, when printf is built in, and strlen is known not to modify global memory.

#Xcode project build settings code#

In addition, when a function is recognized as a builtin function, GCC may use information about that function to warn about problems with calls to that function, or to generate more efficient code, even if the resulting code still contains calls to that function. The resulting code is often both smaller and faster, but since the function calls no longer appear as such, you cannot set a breakpoint on those calls, nor can you change the behavior of the functions by linking with a different library. GCC normally generates special code to handle certain builtin functions more efficiently for instance, calls to alloca may become single instructions that adjust the stack directly, and calls to memcpy may become inline copy loops.

Gcc Debug Information Format GCC_DEBUG_INFORMATION_FORMATĬontrols whether builtin functions that do not begin with _builtin_ as prefix are recognized.

This is normally the best choice unless you have specific needs. std=gnu11Ĭompiler Default: Tells the compiler to use its default C language dialect.

#Xcode project build settings iso#

GNU11: Accept ISO C11 and GNU extensions. std=gnu99Ĭ11: Accept ISO C11 (2011), but not GNU extensions. GNU99: Accept ISO C99 and GNU extensions. std=gnu89Ĭ99: Accept ISO C99 (1999), but not GNU extensions. GNU89: Accept ISO C90 and GNU extensions. This setting also enables trigraphs.Ĭ89: Accept ISO C90 (1990), but not GNU extensions. ansi Incompatible GNU extensions include the asm, inline, and typeof keywords (but not the equivalent ` asm, inline, and typeof ` forms), and the // syntax for comments. (Currently equivalent to GNU++98.)Ĭhoose a standard or non-standard C language dialect.ĪNSI C: Accept ISO C90 and ISO C++, turning off GNU extensions that are incompatible. std=gnu++17Ĭompiler Default: Tells the compiler to use its default C++ language dialect. GNU++17: Accept the ISO C++ 2017 standard with amendments and GNU extensions. std=gnu++14Ĭ++17: Accept the ISO C++ 2017 standard with amendments, but not GNU extensions. GNU++14: Accept the ISO C++ 2014 standard with amendments and GNU extensions. std=gnu++11Ĭ++14: Accept the ISO C++ 2014 standard with amendments, but not GNU extensions. GNU++11: Accept the ISO C++ 2011 standard with amendments and GNU extensions. std=gnu++98Ĭ++11: Accept the ISO C++ 2011 standard with amendments, but not GNU extensions. GNU++98: Accept ISO C++ 1998 with amendments and GNU extensions. Options include:Ĭ++98: Accept ISO C++ 1998 with amendments, but not GNU extensions. TypeĬhoose a standard or non-standard C++ language dialect. Use them only in Release or Deployment configurations. Generally you should not specify an order file in Debug or Development configurations, as this will make the linked binary less readable to the debugger.

Literal C-strings may be ordered by quoting the string in the order file (for example, 'Hello, world '). This enables you to have one order file that works for multiple architectures.

A symbol name may also be optionally preceded with the architecture (for example, ppc:_foo or ppc:foo.o:_foo). This is useful for static functions/data that occur in multiple files.

A symbol name may be optionally preceded with its object file leafname and a colon (for example, foo.o:_foo). Order files are text files with one symbol name per line. The path to a file that alters the order in which functions and data are laid out.įor each section in the output file, any symbol in that section that are specified in the order file is moved to the start of its section and laid out in the same order as in the order file.

Core Data Mapping Model Compiler (MAPC).

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