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gnu: abseil-cpp-20200923.3: Fix test suite on some architectures.

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* gnu/packages/cpp.scm (abseil-cpp-20200923.3)[source]: Add patches.
* gnu/packages/patches/abseil-cpp-20200923.3-adjust-sysinfo.patch,
gnu/packages/patches/abseil-cpp-20200923.3-duration-test.patch: New
files.
* gnu/local.mk (dist_patch_DATA): Register them.

Change-Id: I3a0a6c3396a7c2854236c68ec77a68bbdd6af1f4
This commit is contained in:
Efraim Flashner 2024-05-20 10:28:46 +03:00
parent 24db97c10d
commit e50fc5380e
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GPG key ID: 41AAE7DCCA3D8351
4 changed files with 151 additions and 1 deletions
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2
gnu/local.mk
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@ -911,6 +911,8 @@ dist_patch_DATA = \
%D%/packages/patches/abcl-fix-build-xml.patch \
%D%/packages/patches/ableton-link-system-libraries-debian.patch \
%D%/packages/patches/abiword-explictly-cast-bools.patch \
%D%/packages/patches/abseil-cpp-20200923.3-adjust-sysinfo.patch \
%D%/packages/patches/abseil-cpp-20200923.3-duration-test.patch \
%D%/packages/patches/abseil-cpp-fix-strerror_test.patch \
%D%/packages/patches/adb-add-libraries.patch \
%D%/packages/patches/adb-libssl_11-compatibility.patch \

4
gnu/packages/cpp.scm
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@ -1379,7 +1379,9 @@ (define-public abseil-cpp-20200923.3
(base32
"1p4djhm1f011ficbjjxx3n8428p8481p20j4glpaawnpsi362hkl"))
(patches
(search-patches "abseil-cpp-fix-strerror_test.patch"))))
(search-patches "abseil-cpp-fix-strerror_test.patch"
"abseil-cpp-20200923.3-adjust-sysinfo.patch"
"abseil-cpp-20200923.3-duration-test.patch"))))
(build-system cmake-build-system)
(arguments
`(#:configure-flags (list "-DBUILD_SHARED_LIBS=ON"

60
gnu/packages/patches/abseil-cpp-20200923.3-adjust-sysinfo.patch Normal file
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@ -0,0 +1,60 @@
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() did not return a reasonable value";
-#else
- // Aarch64 cannot read the CPU frequency from sysfs, so we get back 1.0.
- // Emscripten does not have a sysfs to read from at all.
+ // Linux only exposes the CPU frequency on certain architectures, and
+ // Emscripten doesn't expose it at all.
+#if defined(__linux__) && \
+ (defined(__aarch64__) || defined(__hppa__) || defined(__mips__) || \
+ defined(__arm__) || defined(__riscv) || defined(__s390x__)) || \
+ defined(__EMSCRIPTEN__)
EXPECT_EQ(NominalCPUFrequency(), 1.0)
<< "CPU frequency detection was fixed! Please update unittest.";
+#else
+ EXPECT_GE(NominalCPUFrequency(), 1000.0)
+ << "NominalCPUFrequency() did not return a reasonable value";
#endif
}
+#endif
TEST(SysinfoTest, GetTID) {
EXPECT_EQ(GetTID(), GetTID()); // Basic compile and equality test.

86
gnu/packages/patches/abseil-cpp-20200923.3-duration-test.patch Normal file
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@ -0,0 +1,86 @@
This patch is taken from upstream and helps the test pass on all architectures.
The adjustment to absl/numeric/internal/bits.h was removed since the file
didn't appear in the git checkout.
From b0735979d778a768caee207f01f327535cbd2140 Mon Sep 17 00:00:00 2001
From: Abseil Team <absl-team@google.com>
Date: Tue, 2 Mar 2021 14:28:07 -0800
Subject: [PATCH] Export of internal Abseil changes
--
a74bdb72c3a6983e08a805938dd0e20e97d55bba by Abseil Team <absl-team@google.com>:
Fix typo: calcualte -> calculate
PiperOrigin-RevId: 360515509
--
3ddf8ac194e81a13e9de095e59dd061c1beacfe3 by Benjamin Barenblat <bbaren@google.com>:
Make tests tolerant of FMA contraction
Weaken Duration.ToDoubleSecondsCheckEdgeCases and
Duration.ToDoubleSecondsCheckRandom to make them less sensitive to fused
multiply/add contraction.
PiperOrigin-RevId: 360297653
GitOrigin-RevId: a74bdb72c3a6983e08a805938dd0e20e97d55bba
Change-Id: I0c55383bc13040ea77511c4130d142368103dc57
---
absl/numeric/internal/bits.h | 2 +-
absl/time/duration_test.cc | 18 +++++++++++-------
2 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/absl/time/duration_test.cc b/absl/time/duration_test.cc
index 4d85a2c4f45..fb28fa987f6 100644
--- a/absl/time/duration_test.cc
+++ b/absl/time/duration_test.cc
@@ -1369,10 +1369,13 @@ TEST(Duration, SmallConversions) {
EXPECT_THAT(ToTimeval(absl::Nanoseconds(2000)), TimevalMatcher(tv));
}
-void VerifySameAsMul(double time_as_seconds, int* const misses) {
+void VerifyApproxSameAsMul(double time_as_seconds, int* const misses) {
auto direct_seconds = absl::Seconds(time_as_seconds);
auto mul_by_one_second = time_as_seconds * absl::Seconds(1);
- if (direct_seconds != mul_by_one_second) {
+ // These are expected to differ by up to one tick due to fused multiply/add
+ // contraction.
+ if (absl::AbsDuration(direct_seconds - mul_by_one_second) >
+ absl::time_internal::MakeDuration(0, 1u)) {
if (*misses > 10) return;
ASSERT_LE(++(*misses), 10) << "Too many errors, not reporting more.";
EXPECT_EQ(direct_seconds, mul_by_one_second)
@@ -1384,7 +1387,8 @@ void VerifySameAsMul(double time_as_seconds, int* const misses) {
// For a variety of interesting durations, we find the exact point
// where one double converts to that duration, and the very next double
// converts to the next duration. For both of those points, verify that
-// Seconds(point) returns the same duration as point * Seconds(1.0)
+// Seconds(point) returns a duration near point * Seconds(1.0). (They may
+// not be exactly equal due to fused multiply/add contraction.)
TEST(Duration, ToDoubleSecondsCheckEdgeCases) {
constexpr uint32_t kTicksPerSecond = absl::time_internal::kTicksPerSecond;
constexpr auto duration_tick = absl::time_internal::MakeDuration(0, 1u);
@@ -1423,8 +1427,8 @@ TEST(Duration, ToDoubleSecondsCheckEdgeCases) {
}
// Now low_edge is the highest double that converts to Duration d,
// and high_edge is the lowest double that converts to Duration after_d.
- VerifySameAsMul(low_edge, &misses);
- VerifySameAsMul(high_edge, &misses);
+ VerifyApproxSameAsMul(low_edge, &misses);
+ VerifyApproxSameAsMul(high_edge, &misses);
}
}
}
@@ -1444,8 +1448,8 @@ TEST(Duration, ToDoubleSecondsCheckRandom) {
int misses = 0;
for (int i = 0; i < 1000000; ++i) {
double d = std::exp(uniform(gen));
- VerifySameAsMul(d, &misses);
- VerifySameAsMul(-d, &misses);
+ VerifyApproxSameAsMul(d, &misses);
+ VerifyApproxSameAsMul(-d, &misses);
}
}