117/416: gnu: vulkan-loader: Refer to vulkan-headers in pkg-config file.

[guix-commits]

apteryx pushed a commit to branch master
in repository guix.

commit bef257a1d7e37aaf8e7a635036505a0b3eec1578
Author: Marius Bakke <marius@gnu.org>
AuthorDate: Sun Jan 8 20:27:08 2023 +0100

    gnu: vulkan-loader: Refer to vulkan-headers in pkg-config file.
    
    * gnu/packages/vulkan.scm (vulkan-loader)[arguments]: Add phase.
---
 gnu/packages/vulkan.scm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gnu/packages/vulkan.scm b/gnu/packages/vulkan.scm
index dffc6c2cdd..e0ff2dc71b 100644
--- a/gnu/packages/vulkan.scm
+++ b/gnu/packages/vulkan.scm
@@ -237,6 +237,14 @@ interpretation of the specifications for these languages.")
               "-DBUILD_TESTS=ON")
        #:phases
        #~(modify-phases %standard-phases
+           (add-after 'unpack 'fix-pkg-config-file
+             (lambda* (#:key inputs #:allow-other-keys)
+               (let ((vulkan-headers (dirname (search-input-directory
+                                               inputs "include/vulkan"))))
+                 ;; Ensure the pkg-config file refers to vulkan-headers.
+                 (substitute* "loader/vulkan.pc.in"
+                   (("^includedir=.*")
+                    (string-append "includedir=" vulkan-headers "\n"))))))
            (add-after 'unpack 'unpack-googletest
              (lambda* (#:key native-inputs inputs #:allow-other-keys)
                (let ((gtest (search-input-directory (or native-inputs inputs)