[gn build] attempt to unbreak linux after fc9696130c8
authorNico Weber <thakis@chromium.org>
Thu, 20 May 2021 18:55:37 +0000 (14:55 -0400)
committerNico Weber <thakis@chromium.org>
Thu, 20 May 2021 18:55:40 +0000 (14:55 -0400)
commitf05fbb7795a4dcc481c66a41a2c7816921bd7ef4
treef6d5fbb8f0f7161c9467dd8f5eabc3e634d0e1a2
parentc40b02608eea5541b9f402f285b78cb0c1f3bb72
[gn build] attempt to unbreak linux after fc9696130c8

Only emit `global:` if there are any exported symbols.

While here, `chmod +x` the symbol_exports.py script.
llvm/utils/gn/build/symbol_exports.py [changed mode: 0644->0755]