Add upstream patch to fix aarch64 builds

Signed-off-by: Stephen Gallagher <sgallagh@redhat.com>

2524.patch

@@ -0,0 +1,36 @@
+From eb5552190000b9699bba33e1e419f500c7bd18b7 Mon Sep 17 00:00:00 2001
+From: Ben Noordhuis <info@bnoordhuis.nl>
+Date: Sat, 19 Oct 2019 09:54:46 +0200
+Subject: [PATCH] linux: fix arm64 SYS__sysctl build breakage
+
+The arm64 architecture never had a _sysctl system call and therefore
+doesn't have a SYS__sysctl define either. Always return UV_ENOSYS.
+
+Fixes: https://github.com/libuv/libuv/issues/2522
+---
+ src/unix/random-sysctl.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/src/unix/random-sysctl.c b/src/unix/random-sysctl.c
+index 7af2e32070..fb182ded09 100644
+--- a/src/unix/random-sysctl.c
++++ b/src/unix/random-sysctl.c
+@@ -65,9 +65,18 @@ int uv__random_sysctl(void* buf, size_t buflen) {
+      * an okay trade-off for the fallback of the fallback: this function is
+      * only called when neither getrandom(2) nor /dev/urandom are available.
+      * Fails with ENOSYS on kernels configured without CONFIG_SYSCTL_SYSCALL.
++     * At least arm64 never had a _sysctl system call and therefore doesn't
++     * have a SYS__sysctl define either.
+      */
++#ifdef SYS__sysctl
+     if (syscall(SYS__sysctl, &args) == -1)
+       return UV__ERR(errno);
++#else
++    {
++      (void) &args;
++      return UV_ENOSYS;
++    }
++#endif
+ 
+     if (n != sizeof(uuid))
+       return UV_EIO;  /* Can't happen. */

libuv.spec

@@ -1,7 +1,7 @@
 Name:           libuv
 Epoch:          1
 Version:        1.33.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Platform layer for node.js
 
 # the licensing breakdown is described in detail in the LICENSE file
@@ -13,6 +13,12 @@ Source2:        %{name}.pc.in
 BuildRequires:  autoconf automake libtool
 BuildRequires:  gcc
 
+# -- Patches -- #
+# Upstream patch to fix builds on aarch64
+# https://github.com/libuv/libuv/pull/2524
+Patch0001: 2524.patch
+
+
 %description
 libuv is a new platform layer for Node. Its purpose is to abstract IOCP on
 Windows and libev on Unix systems. We intend to eventually contain all platform
@@ -32,6 +38,7 @@ Requires:       %{name}-devel%{?_isa} = %{epoch}:%{version}-%{release}
 %description static
 Static library (.a) version of libuv.
 
+
 %prep
 %autosetup -n %{name}-v%{version} -p1
 
@@ -68,6 +75,9 @@ rm -f %{buildroot}%{_libdir}/libuv.la
 %{_libdir}/%{name}.a
 
 %changelog
+* Mon Oct 21 2019 Stephen Gallagher <sgallagh@redhat.com> - 1.33.0-2
+- Add upstream patch to fix aarch64 builds
+
 * Fri Oct 18 2019 Stephen Gallagher <sgallagh@redhat.com> - 1.33.0-1
 - Update to 1.33.0
 - https://github.com/libuv/libuv/blob/v1.33.0/ChangeLog