Jordan Rupprecht d5effeb47c [llvm-nm] Print an explicit "no symbols" message when an object file has no symbols ... Summary: GNU nm (and other nm implementations, such as "go tool nm") prints an explicit "no symbols" message when an object file has no symbols. Currently llvm-nm just doesn't print anything. Adding an explicit "no symbols" message will allow llvm-nm to be used in place of nm: some scripts and build processes use `nm <file> | grep "no symbols"` as a test to see if a file has no symbols. It will also be more familiar to anyone used to nm. That said, the format implemented here is slightly different, in that it doesn't print the tool name in the message (which IMHO is not useful to include). Demo: ``` $ for nm in nm bin/llvm-nm ; do echo "nm implementation: $nm"; $nm /tmp/foo{1,2}.o; echo; done nm implementation: nm /tmp/foo1.o: nm: /tmp/foo1.o: no symbols /tmp/foo2.o: 0000000000000000 T foo2 nm implementation: bin/llvm-nm /tmp/foo1.o: no symbols /tmp/foo2.o: 0000000000000000 T foo2 ``` Reviewers: MaskRay Reviewed By: MaskRay Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D52810 llvm-svn: 343742		2018-10-03 23:39:49 +00:00
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CMakeLists.txt	Fix debug build by adding missing dependencies on libBinaryFormat	2018-05-15 00:46:43 +00:00
llvm-nm.cpp	[llvm-nm] Print an explicit "no symbols" message when an object file has no symbols	2018-10-03 23:39:49 +00:00
LLVMBuild.txt