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-rw-r--r--var/spack/repos/builtin/packages/libunwind/package.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/libunwind/package.py b/var/spack/repos/builtin/packages/libunwind/package.py
index 6a78fe1ca8..ed0c824d1e 100644
--- a/var/spack/repos/builtin/packages/libunwind/package.py
+++ b/var/spack/repos/builtin/packages/libunwind/package.py
@@ -31,5 +31,8 @@ class Libunwind(AutotoolsPackage):
homepage = "http://www.nongnu.org/libunwind/"
url = "http://download.savannah.gnu.org/releases/libunwind/libunwind-1.1.tar.gz"
+ conflicts('platform=darwin',
+ msg='Non-GNU libunwind needs ELF libraries Darwin does not have')
+
version('1.2.1', '06ba9e60d92fd6f55cd9dadb084df19e')
version('1.1', 'fb4ea2f6fbbe45bf032cd36e586883ce')