macOS: Builtin issues

[IngwiePhoenix]

Hello! :)

I just wanted to try this project out and made me a clone and attempted a build with mkdir out && make all BUILDDIR=./out. This is what essentially happened:

cc -g -c -Icpp -o out/getopt.o cpp/getopt.c
cpp/getopt.c:21:3: warning: add explicit braces to avoid dangling else [-Wdangling-else]
                else if (strcmp(argv[optind], "--") == 0) {
                ^
1 warning generated.
cc -g -c -Icpp -o out/unix.o cpp/unix.c
cpp/unix.c:96:1: error: expected parameter declarator
memmove(void *dp, const void *sp, size_t n)
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_string.h:69:47: note: expanded from macro 'memmove'
                __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                                                            ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_common.h:38:63: note: expanded from macro '__darwin_obsz0'
#define __darwin_obsz0(object) __builtin_object_size (object, 0)
                                                              ^
cpp/unix.c:96:1: error: expected ')'
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_string.h:69:47: note: expanded from macro 'memmove'
                __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                                                            ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_common.h:38:63: note: expanded from macro '__darwin_obsz0'
#define __darwin_obsz0(object) __builtin_object_size (object, 0)
                                                              ^
cpp/unix.c:96:1: note: to match this '('
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_string.h:69:47: note: expanded from macro 'memmove'
                __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                                                            ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_common.h:38:54: note: expanded from macro '__darwin_obsz0'
#define __darwin_obsz0(object) __builtin_object_size (object, 0)
                                                     ^
cpp/unix.c:96:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
memmove(void *dp, const void *sp, size_t n)
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_string.h:69:47: note: expanded from macro 'memmove'
                __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                                                            ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_common.h:38:32: note: expanded from macro '__darwin_obsz0'
#define __darwin_obsz0(object) __builtin_object_size (object, 0)
                               ^
cpp/unix.c:96:1: error: conflicting types for '__builtin___memmove_chk'
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_string.h:69:3: note: expanded from macro 'memmove'
                __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                ^
cpp/unix.c:96:1: note: '__builtin___memmove_chk' is a builtin with type 'void *(void *, const void *, unsigned long, unsigned long)'
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_string.h:69:3: note: expanded from macro 'memmove'
                __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                ^
cpp/unix.c:96:1: error: definition of builtin function '__builtin___memmove_chk'
memmove(void *dp, const void *sp, size_t n)
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk/usr/include/secure/_string.h:69:3: note: expanded from macro 'memmove'
                __builtin___memmove_chk (dest, __VA_ARGS__, __darwin_obsz0 (dest))
                ^
1 warning and 4 errors generated.
make: *** [out/unix.o] Error 1

macOS uses a specialized version of LLVM Clang:

$ cc --version
Apple LLVM version 10.0.0 (clang-1000.11.45.5)
Target: x86_64-apple-darwin18.2.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

Kind regards,

Ingwie.

[kulp]

I had LCC working on macOS -- I think you need something like this commit : kulp@7de571b