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llvm-mc: error when -compress-debug-sections is requested and zlib is not linked

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This is a bit of a stab in the dark, since I have zlib on my machine.
Just going to bounce it off the bots & see if it sticks.

Do we have some convention for negative REQUIRES: checks? Or do I just
need to add a feature like I've done here?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205050 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2014-03-28 20:45:24 +00:00
parent 0e11c017a9
commit 4a9c2585ab
3 changed files with 13 additions and 1 deletions
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5
test/MC/ELF/nocompression.s Normal file
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@ -0,0 +1,5 @@
// RUN: llvm-mc -filetype=obj -compress-debug-sections -triple x86_64-pc-linux-gnu %s -o - 2>&1 | FileCheck %s
// REQUIRES: nozlib
// CHECK: llvm-mc: build tools with zlib to enable -compress-debug-sections

2
test/lit.cfg
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@ -297,6 +297,8 @@ if not 'hexagon' in config.target_triple:
if config.have_zlib == "1":
config.available_features.add("zlib")
else:
config.available_features.add("nozlib")
# Native compilation: host arch == target arch
# FIXME: Consider cases that target can be executed

7
tools/llvm-mc/llvm-mc.cpp
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@ -384,8 +384,13 @@ int main(int argc, char **argv) {
std::unique_ptr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(*MRI, TripleName));
assert(MAI && "Unable to create target asm info!");
if (CompressDebugSections)
if (CompressDebugSections) {
if (!zlib::isAvailable()) {
errs() << ProgName << ": build tools with zlib to enable -compress-debug-sections";
return 1;
}
MAI->setCompressDebugSections(true);
}
// FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and
// MCObjectFileInfo needs a MCContext reference in order to initialize itself.