From db19d83ea7c346517a0cb78c132336499a0c2213 Mon Sep 17 00:00:00 2001
From: William R Tobin <4522899+wrtobin@users.noreply.github.com>
Date: Thu, 10 Aug 2023 23:01:02 -0700
Subject: [PATCH] essl: add +lapackforessl variant (#39362)

---
 var/spack/repos/builtin/packages/essl/package.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/var/spack/repos/builtin/packages/essl/package.py b/var/spack/repos/builtin/packages/essl/package.py
index a99c44b29e2..4b8572834c4 100644
--- a/var/spack/repos/builtin/packages/essl/package.py
+++ b/var/spack/repos/builtin/packages/essl/package.py
@@ -22,13 +22,15 @@ class Essl(BundlePackage):
         multi=False,
     )
     variant("cuda", default=False, description="CUDA acceleration")
+    variant("lapackforessl", default=False, description="Provides lapackforessl lapack library")
 
     provides("blas")
+    provides("lapack", when="+lapackforessl")
 
     conflicts(
         "+cuda",
         when="+ilp64",
-        msg="ESSL+cuda+ilp64 cannot combine CUDA acceleration" " 64 bit integers",
+        msg="ESSL+cuda+ilp64 cannot combine CUDA acceleration 64 bit integers",
     )
 
     conflicts(
@@ -63,3 +65,10 @@ def blas_libs(self):
         essl_libs = find_libraries(essl_lib, root=essl_root, shared=True)
 
         return essl_libs
+
+    @property
+    def lapack_libs(self):
+        essl_libs = find_libraries(
+            ["liblapackforessl", "liblapackforessl_"], root=self.prefix.lib64, shared=True
+        )
+        return essl_libs