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-rw-r--r--var/spack/repos/builtin/packages/gsl/package.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/gsl/package.py b/var/spack/repos/builtin/packages/gsl/package.py
index 21d7bd6371..dd5bad19cd 100644
--- a/var/spack/repos/builtin/packages/gsl/package.py
+++ b/var/spack/repos/builtin/packages/gsl/package.py
@@ -55,3 +55,8 @@ class Gsl(AutotoolsPackage, GNUMirrorPackage):
configure_args.append("CBLAS_LIBS=%s" % self.spec["blas"].libs.ld_flags)
return configure_args
+
+ def setup_run_environment(self, env):
+ # cmake looks for GSL_ROOT_DIR to find GSL so this helps pick the spack one
+ # when there are multiple installations (e.g. a system one and a spack one)
+ env.set("GSL_ROOT_DIR", self.prefix)