compile XBMC for iOS error with missing binary operator before token "(" - ios

Question

I'm compile XBMC for iOS with the following configuration:
$ cd $HOME/XBMC
$ cd tools/depends
$ ./bootstrap
$ ./configure --host=arm-apple-darwin
$ make
I get the following output:
>/bin/sh ../../libtool --tag=CC --mode=compile /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2 -DHAVE_CONFIG_H -I. -I../.. -I../../include/shairplay -std=gnu99 -no_compact_linkedit -no-cpp-precomp -mcpu=cortex-a8 -mfpu=neon -ftree-vectorize -mfloat-abi=softfp -pipe -Wno-trigraphs -fpascal-strings -O3 -Wreturn-type -Wunused-variable -fmessage-length=0 -gdwarf-2 -arch armv7 -miphoneos-version-min=4.2 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -I/Users/Shared/xbmc-depends/iphoneos6.1_armv7-target/include -std=gnu99 -no_compact_linkedit -no-cpp-precomp -mcpu=cortex-a8 -mfpu=neon -ftree-vectorize -mfloat-abi=softfp -pipe -Wno-trigraphs -fpascal-strings -O3 -Wreturn-type -Wunused-variable -fmessage-length=0 -gdwarf-2 -arch armv7 -miphoneos-version-min=4.2 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -I/Users/Shared/xbmc-depends/iphoneos6.1_armv7-target/include -MT libshairplay_la-dnssd.lo -MD -MP -MF .deps/libshairplay_la-dnssd.Tpo -c -o libshairplay_la-dnssd.lo `test -f 'dnssd.c' || echo './'`dnssd.c
libtool: compile: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2 -DHAVE_CONFIG_H -I. -I../.. -I../../include/shairplay -std=gnu99 -no_compact_linkedit -no-cpp-precomp -mcpu=cortex-a8 -mfpu=neon -ftree-vectorize -mfloat-abi=softfp -pipe -Wno-trigraphs -fpascal-strings -O3 -Wreturn-type -Wunused-variable -fmessage-length=0 -gdwarf-2 -arch armv7 -miphoneos-version-min=4.2 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -I/Users/Shared/xbmc-depends/iphoneos6.1_armv7-target/include -std=gnu99 -no_compact_linkedit -no-cpp-precomp -mcpu=cortex-a8 -mfpu=neon -ftree-vectorize -mfloat-abi=softfp -pipe -Wno-trigraphs -fpascal-strings -O3 -Wreturn-type -Wunused-variable -fmessage-length=0 -gdwarf-2 -arch armv7 -miphoneos-version-min=4.2 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -I/Users/Shared/xbmc-depends/iphoneos6.1_armv7-target/include -MT libshairplay_la-dnssd.lo -MD -MP -MF .deps/libshairplay_la-dnssd.Tpo -c dnssd.c -fno-common -DPIC -o .libs/libshairplay_la-dnssd.o
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk/usr/include/dispatch/dispatch.h:49,
from /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk/usr/include/dns_sd.h:140,
from dnssd.c:62:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk/usr/include/dispatch/base.h:103:44: error: missing binary operator before token "("
make[7]: *** [libshairplay_la-dnssd.lo] Error 1
make[6]: *** [all-recursive] Error 1
make[5]: *** [all-recursive] Error 1
make[4]: *** [all-recursive] Error 1
make[3]: *** [all] Error 2
make[2]: *** [iphoneos6.1_armv7-target/src/lib/.libs/libshairplay.so.0.0.0] Error 2
make[1]: *** [libshairplay] Error 2
make: *** [target/.installed-iphoneos6.1_armv7-target] Error 2
I find dispatch.h 49 line in this:
#include <dispatch/base.h>
dns_sd.h 140 line in this:
#if _DNS_SD_LIBDISPATCH
#include <dispatch/dispatch.h>
#endif
base.h 103 line in this:
#if defined(__has_feature) && __has_feature(objc_fixed_enum)
#define DISPATCH_ENUM(name, type, ...) \ typedef enum : type { __VA_ARGS__ } name##_t
#else
#define DISPATCH_ENUM(name, type, ...) \ enum { __VA_ARGS__ }; typedef type name##_t
#endif
base.h 44 line in this:
#define DISPATCH_SENTINEL __attribute__((__sentinel__))
dnssd.c 62 line in this:
#include <dns_sd.h>
#define DNSSD_STDCALL
I don't understand why it is complaining about a binary operator here, is this a XBMC bug?

Answer 1

I'm new to clang, however I managed to fix this issue. Open the file:
dnssd.c
And paste the following code at the top of the file:
#ifndef __has_feature // Optional of course.
#define __has_feature(x) 0 // Compatibility with non-clang compilers.
#endif
#ifndef __has_extension
#define __has_extension __has_feature // Compatibility with pre-3.0 compilers.
#endif
It will improve compatibility with some compilers as of Clang Language documentation.