From 739cdb368e08aeeb4ec482cb4b403ae3de74495a Mon Sep 17 00:00:00 2001
From: idontgetoutmuch <dominic@steinitz.org>
Date: Tue, 3 Sep 2019 15:34:45 +0100
Subject: [PATCH] Ensure blas produces pkg config files (#67629)

blas: produce pkgconfig file
---
 pkgs/development/libraries/science/math/blas/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/libraries/science/math/blas/default.nix b/pkgs/development/libraries/science/math/blas/default.nix
index 9c412f93d137..a14ed4e6a30b 100644
--- a/pkgs/development/libraries/science/math/blas/default.nix
+++ b/pkgs/development/libraries/science/math/blas/default.nix
@@ -44,6 +44,15 @@ stdenv.mkDerivation rec {
     install ${dashD} -m755 libblas.so.${version} "$out/lib/libblas.so.${version}"
     ln -s libblas.so.${version} "$out/lib/libblas.so.3"
     ln -s libblas.so.${version} "$out/lib/libblas.so"
+    # Write pkgconfig alias.
+    # See also openblas/default.nix
+    mkdir $out/lib/pkgconfig
+    cat <<EOF > $out/lib/pkgconfig/blas.pc
+Name: blas
+Version: ${version}
+Description: blas provided by the BLAS package.
+Libs: -L$out/lib -lblas
+EOF
   '';
 
   preFixup = stdenv.lib.optionalString stdenv.isDarwin ''