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CMake: Fix unused compiler flag warning 

Add a check to define FMT_EXCEPTIONS = 0 when compiling on MacOS.

Replaces -fno-objc-exceptions, which also disabled fmt exceptions but
generated warnings when compiling c++ files.
This commit is contained in:
Dentomologist 2021-03-15 10:13:22 -07:00
parent f44f20560d
commit 7eaa98d461
1 changed files with 2 additions and 5 deletions
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7
CMakeLists.txt
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@ -299,13 +299,10 @@ if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
# Drop unreachable code and data.
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-dead_strip,-dead_strip_dylibs")
# Set -fno-objc-exceptions, for consistency with -fno-exceptions earlier.
# Set FMT_EXCEPTIONS = 0, for consistency with -fno-exceptions earlier.
# If we set only -fno-exceptions, fmt fails to compile when included from
# Objective-C++ because fmt tries try to use throw because __EXCEPTIONS is defined.
#
# TODO: Only enable this for Objective-C(++).
# We get warnings if we enable this when building regular C(++) code.
check_and_add_flag(NO_OBJC_EXCEPTIONS -fno-objc-exceptions)
add_definitions(-DFMT_EXCEPTIONS=0)
find_library(APPKIT_LIBRARY AppKit)
find_library(APPSERV_LIBRARY ApplicationServices)