Hi,
I would like to create a fat iOS static library from a bunch of c++ code
(multiple projects) with embedded bitcode. I would like to use this
library in an Xcode workspace where bitcode is enabled. The server where
the c++ code is being built is CentOS based. So I downloaded LLVM 4.0
with clang. With the help of clang and other tools I'm able to compile
the code into libraries supporting armv7 and arm64 architectures and
create a single fat library (using libtool and lipo). Everything works
fine until I would like to achieve a bitcode embedded library. I thought
that the only thing I need to do is to add the -fembed-bitcode option to
clang. But when I try to export on Mac OS X the archived workspace for
ad-hoc distribution, I got a strange error message:
error: Failed to verify bitcode in ***.app/***:
error: Clang option verification failed for bitcode 506 (unrecognized
arguments: -mrelax-all -fembed-bitcode=all -disable-free
-disable-llvm-verifier -discard-value-names -main-file-name
algorithm.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix
-mdisable-fp-elim -masm-verbose -target-cpu cortex-a8 -target-feature
+soft-float-abi -target-linker-version 134.9 -dwarf-column-info
-debugger-tuning=lldb -coverage-file ***/algorithm.opp -resource-dir
/opt/llvm-4.0.0/bin/../lib64/clang/4.0.0 -std=gnu++11
-fdebug-compilation-dir *** -ferror-limit 19 -fmessage-length 192
-stack-protector 1 -fallow-half-arguments-and-returns -fblocks
-fobjc-runtime=ios-8.0.0 -fencode-extended-block-signature
-fsjlj-exceptions -fmax-type-align=16 -fdiagnostics-show-option
-fcolor-diagnostics)
Can anybody help what can be the error? Or my thoughts about how to
build a bitcode embedded static library are wrong? Any help is really
appreciated!
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