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authorLibravatar Jeff Hostetler <jeffhost@microsoft.com>2022-03-25 18:02:59 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2022-03-25 16:04:16 -0700
commit5ff01b1f1e8e42805bdf98cb0bd3277d18543b07 (patch)
tree6df6ab22e16033f7b230bb0e4fa8c060e1bafe18 /builtin/show-branch.c
parentcompat/fsmonitor/fsm-listen-win32: implement FSMonitor backend on Windows (diff)
downloadtgif-5ff01b1f1e8e42805bdf98cb0bd3277d18543b07.tar.xz
compat/fsmonitor/fsm-listen-darwin: add MacOS header files for FSEvent
Include MacOS system declarations to allow us to use FSEvent and CoreFoundation APIs. We need different versions of the declarations for GCC vs. clang because of compiler and header file conflicts. While it is quite possible to #include Apple's CoreServices.h when compiling C source code with clang, trying to build it with GCC currently fails with this error: In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/Security.framework/Headers/AuthSession.h:32, from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/Security.framework/Headers/Security.h:42, from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/CoreServices.framework/Frameworks/... ...OSServices.framework/Headers/CSIdentity.h:43, from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/CoreServices.framework/Frameworks/... ...OSServices.framework/Headers/OSServices.h:29, from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/CoreServices.framework/Frameworks/... ...LaunchServices.framework/Headers/IconsCore.h:23, from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/CoreServices.framework/Frameworks/... ...LaunchServices.framework/Headers/LaunchServices.h:23, from /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/CoreServices.framework/Headers/CoreServices.h:45, /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/... ...Library/Frameworks/Security.framework/Headers/Authorization.h:193:7: error: variably modified 'bytes' at file scope 193 | char bytes[kAuthorizationExternalFormLength]; | ^~~~~ The underlying reason is that GCC (rightfully) objects that an `enum` value such as `kAuthorizationExternalFormLength` is not a constant (because it is not, the preprocessor has no knowledge of it, only the actual C compiler does) and can therefore not be used to define the size of a C array. This is a known problem and tracked in GCC's bug tracker: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93082 In the meantime, let's not block things and go the slightly ugly route of declaring/defining the FSEvents constants, data structures and functions that we need, so that we can avoid above-mentioned issue. Let's do this _only_ for GCC, though, so that the CI/PR builds (which build both with clang and with GCC) can guarantee that we _are_ using the correct data types. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/show-branch.c')
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