gnu: libpciaccess: Support the 64bit Hurd.

* gnu/packages/patches/libpciaccess-hurd64.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/xorg.scm (libpciaccess) [arguments]: Use g-expressions.  When
building for the 64bit Hurd, use it in new "apply-hurd64-patch" phase.

Change-Id: I8936377da726681b748cc010e1fbae3fb19dee05

1 files changed, 58 insertions, 0 deletions

diff --git a/gnu/packages/patches/libpciaccess-hurd64.patch b/gnu/packages/patches/libpciaccess-hurd64.patch
new file mode 100644
index 0000000000..f7e11059b1
--- /dev/null
+++ b/gnu/packages/patches/libpciaccess-hurd64.patch
@@ -0,0 +1,58 @@
+Upstream-status: Taken from upstream:
+
+<https://gitlab.freedesktop.org/xorg/lib/libpciaccess/-/commit/6cd5a4afbb70868c7746de8d50dea59e02e9acf2>.
+
+From 6cd5a4afbb70868c7746de8d50dea59e02e9acf2 Mon Sep 17 00:00:00 2001
+From: Flavio Cruz <flaviocruz@gmail.com>
+Date: Wed, 28 Jun 2023 01:02:34 -0400
+Subject: [PATCH] Fix compilation warnings when building against hurd-amd64.
+Content-Transfer-Encoding: 8bit
+Content-Type: text/plain; charset=UTF-8
+
+Passes mach_msg_type_number_t instead of size_t which have different
+sizes. Example warning:
+
+/hurd_pci.c:101:53: warning: passing argument 3 of 'pci_get_dev_regions' from incompatible pointer type [-Wincompatible-pointer-types]
+  101 |     err = pci_get_dev_regions(d->device_port, &buf, &size);
+      |                                                     ^~~~~
+      |                                                     |
+      |                                                     size_t * {aka long unsigned int *}
+---
+ src/hurd_pci.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/src/hurd_pci.c b/src/hurd_pci.c
+index 8653e1b..9ac3813 100644
+--- a/src/hurd_pci.c
++++ b/src/hurd_pci.c
+@@ -82,7 +82,7 @@ pci_device_hurd_probe(struct pci_device *dev)
+     struct pci_bar regions[6];
+     struct pci_xrom_bar rom;
+     struct pci_device_private *d;
+-    size_t size;
++    mach_msg_type_number_t size;
+     char *buf;
+ 
+     /* Many of the fields were filled in during initial device enumeration.
+@@ -323,7 +323,7 @@ pciclient_cfg_read(mach_port_t device_port, int reg, char *buf,
+                    size_t * nbytes)
+ {
+     int err;
+-    size_t nread;
++    mach_msg_type_number_t nread;
+     char *data;
+ 
+     data = buf;
+@@ -473,7 +473,7 @@ simple_readdir(mach_port_t port, uint32_t *first_entry)
+ {
+     char *data;
+     int nentries = 0;
+-    vm_size_t size;
++    mach_msg_type_number_t size;
+ 
+     dir_readdir (port, &data, &size, *first_entry, 1, 0, &nentries);
+ 
+-- 
+Janneke Nieuwenhuizen <janneke@gnu.org>  | GNU LilyPond https://LilyPond.org
+Freelance IT https://www.JoyOfSource.com | Avatar® https://AvatarAcademy.com
+