ab43cb8520
The Hexagon driver only checked for an explicit -pie flag when constructing the link command, ignoring the toolchain's PIE default. For linux-musl targets, isPIEDefault() returns true (via the Linux toolchain base class), so the compiler generates PIC/PIE code (-pic-level 2 -pic-is-pie) but the linker never received -pie. This mismatch caused LTO failures: without -pie the linker sets Reloc::Static for the LTO backend, which generates GP-relative (small-data) references that lld cannot resolve. Use hasFlag() to respect the toolchain default, and guard the -pie emission against -shared and -r (relocatable) modes.
C language Family Front-end
Welcome to Clang.
This is a compiler front-end for the C family of languages (C, C++ and Objective-C) which is built as part of the LLVM compiler infrastructure project.
Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer.
If you're interested in more (including how to build Clang) it is best to read the relevant websites. Here are some pointers:
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Information on Clang: http://clang.llvm.org/
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Building and using Clang: http://clang.llvm.org/get_started.html
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Clang Static Analyzer: http://clang-analyzer.llvm.org/
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Information on the LLVM project: http://llvm.org/
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If you have questions or comments about Clang, a great place to discuss them is on the Clang forums:
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If you find a bug in Clang, please file it in the LLVM bug tracker: