https://sources.debian.org/data/main/a/abseil/0~20200923.3-2/debian/patches/cpu-frequency.diff
This patch is taken from Debian instead of the upstream URL because the
upstream URL contains far more changes than occur in this patch.

It was then modified to also work for armhf.

From: Benjamin Barenblat <bbaren@google.com>
Subject: Ignore missing CPU frequency on more architectures
Forwarded: yes
Applied-Upstream: https://github.com/abseil/abseil-cpp/commit/1918ad2ae38aa32c74b558b322479a8efdd76363

Linux on MIPS, PA-RISC, RISC-V, and SystemZ doesn’t expose the nominal CPU
frequency via /sys, so don’t worry if `NominalCPUFrequency` returns 1.0 on those
platforms.

Some POWER machines expose the CPU frequency; others do not. Since we can’t
predict which type of machine the tests will run on, simply disable testing for
`NominalCPUFrequency` on POWER.

The author works at Google. Upstream applied this patch as Piper revision
347079873 and exported it to GitHub; the Applied-Upstream URL above points to
the exported commit.

--- a/absl/base/internal/sysinfo_test.cc
+++ b/absl/base/internal/sysinfo_test.cc
@@ -37,17 +37,28 @@ TEST(SysinfoTest, NumCPUs) {
       << "NumCPUs() should not have the default value of 0";
 }
 
+// Ensure that NominalCPUFrequency returns a reasonable value, or 1.00 on
+// platforms where the CPU frequency is not available through sysfs.
+//
+// POWER is particularly problematic here; some Linux kernels expose the CPU
+// frequency, while others do not. Since we can't predict a priori what a given
+// machine is going to do, just disable this test on POWER on Linux.
+#if !(defined(__linux) && (defined(__ppc64__) || defined(__PPC64__)))
 TEST(SysinfoTest, NominalCPUFrequency) {
-#if !(defined(__aarch64__) && defined(__linux__)) && !defined(__EMSCRIPTEN__)
-  EXPECT_GE(NominalCPUFrequency(), 1000.0)
-      << "NominalCPUFrequency() di<pre>
[diff &quot;scheme&quot;]
	xfuncname = &quot;^(\\(define.*)$&quot;

[diff &quot;texinfo&quot;]
	xfuncname = &quot;^@node[[:space:]]+([^,]+).*$&quot;

[format]
        forceinbodyfrom = true  # help preserve commit authorship
        thread = shallow
        useAutoBase = true

[pull]
        rebase = true

[sendemail]
        to = guix-patches@gnu.org
        headerCmd = etc/teams.scm cc-members-header-cmd
        thread = no

[b4]
        attestation-check-dkim = off
        attestation-policy = off
        shazam-am-flags = --signoff --3way
        linkmask = https://yhetil.org/guix/%s
        linktrailermask = https://yhetil.org/guix/%s
        midmask = https://yhetil.org/guix/%s
</pre>
</div></div> <!-- class=content -->
                         <div class=footer>generated by
                             <a href="https://git.zx2c4.com/cgit/about/">
                                 cgit