22 files changed, 861 insertions, 0 deletions
diff --git a/debian/README.Debian b/debian/README.Debian
new file mode 100644
index 00000000..7c0dd3c0
--- /dev/null
+++ b/debian/README.Debian
@@ -0,0 +1,9 @@
+Abseil for Debian
+-----------------
+
+libabsl-dev installs a number of files to 'internal' directories. In general,
+your project should not directly include any files from these directories; they
+may change without warning. If you think you need something from one of those
+files, please report a bug with reportbug(1).
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Thu, 07 May 2020 11:35:28 -0400
diff --git a/debian/changelog b/debian/changelog
new file mode 100644
index 00000000..5705cdaf
--- /dev/null
+++ b/debian/changelog
@@ -0,0 +1,101 @@
+abseil (0~20210324.1-1) UNRELEASED; urgency=medium
+
+  * New upstream release.
+  * Correct debian/watch search URLs to avoid picking up rc versions.
+  * Mangle upstream version in debian/watch to match manual mangling in
+    debian/changelog.
+  * Compute Thumb function bounds correctly. (Closes: #987314)
+  * Reenable unit tests on arm64.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Thu, 08 Apr 2021 10:28:01 -0400
+
+abseil (0~20200923.3-3) unstable; urgency=medium
+
+  * Fix "ftbfs with -march=x86-64-v3" by correcting the relevant unit
+    tests. (Closes: #983936)
+  * Disable double-double unit tests due to compiler bugs.
+  * Reenable unit tests on ppc64el.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Fri, 05 Mar 2021 15:57:38 -0500
+
+abseil (0~20200923.3-2) unstable; urgency=medium
+
+  * Correct string formatting on POWER.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Tue, 09 Feb 2021 14:41:06 -0500
+
+abseil (0~20200923.3-1) unstable; urgency=medium
+
+  * New upstream release.
+  * Correct endianness issues in hash functions and RNG.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Mon, 08 Feb 2021 15:04:52 -0500
+
+abseil (0~20200923.2-3) unstable; urgency=medium
+
+  * Fix some issues in unit tests.
+  * Re-disable unit tests on most platforms until they’re working
+    everywhere.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Sun, 31 Jan 2021 15:13:51 -0500
+
+abseil (0~20200923.2-2) unstable; urgency=medium
+
+  * Reenable unit tests.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Tue, 01 Dec 2020 12:37:56 -0500
+
+abseil (0~20200923.2-1) unstable; urgency=medium
+
+  * New upstream release.
+  * Fix build on hppa via patch. (Closes: #971768)
+  * Link libatomic where necessary to prevent issues with load-time
+    symbol resolution. (Closes: #973492)
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Fri, 06 Nov 2020 16:51:39 -0500
+
+abseil (0~20200923.1-1) unstable; urgency=medium
+
+  * New upstream release.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Mon, 12 Oct 2020 12:40:50 -0400
+
+abseil (0~20200923-2) unstable; urgency=medium
+
+  * Release for unstable.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Tue, 06 Oct 2020 10:00:02 -0400
+
+abseil (0~20200923-1) experimental; urgency=medium
+
+  * New upstream release.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Fri, 25 Sep 2020 17:57:31 -0400
+
+abseil (0~20200225.2-4) unstable; urgency=medium
+
+  * Fix "autopkgtest needs update for new version of cmake: warning on
+    stderr" by applying a patch from upstream. (Closes: #970333)
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Mon, 14 Sep 2020 17:40:05 -0400
+
+abseil (0~20200225.2-3) unstable; urgency=medium
+
+  * Replace symbols file with shlibs infrastructure. (Closes: #966183)
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Fri, 24 Jul 2020 09:42:03 -0400
+
+abseil (0~20200225.2-2) unstable; urgency=medium
+
+  * Rebuild for unstable.
+  * Rework symbols file using pkg-kde-tools for increased robustness.
+  * Avoid SSSE3 on amd64 and SSE2 on i386 for greater processor
+    compatibility.
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Thu, 23 Jul 2020 17:23:57 -0400
+
+abseil (0~20200225.2-1) experimental; urgency=medium
+
+  * Initial release. (Closes: #888705)
+
+ -- Benjamin Barenblat <bbaren@debian.org>  Thu, 18 Jun 2020 16:27:49 -0400
diff --git a/debian/control b/debian/control
new file mode 100644
index 00000000..6573b8af
--- /dev/null
+++ b/debian/control
@@ -0,0 +1,56 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+Source: abseil
+Priority: optional
+Maintainer: Benjamin Barenblat <bbaren@debian.org>
+Build-Depends:
+ cmake (>= 3.5),
+ debhelper-compat (= 12),
+ googletest (>= 1.10.0.20200926) [amd64 arm64 ppc64el],
+Rules-Requires-Root: no
+Standards-Version: 4.5.1
+Section: libs
+Homepage: https://abseil.io/
+Vcs-Browser: https://salsa.debian.org/debian/abseil
+Vcs-Git: https://salsa.debian.org/debian/abseil.git
+Description: extensions to the C++ standard library
+ Abseil is an open-source collection of C++ library code designed to augment the
+ C++ standard library. The Abseil library code is collected from Google's C++
+ codebase and has been extensively tested and used in production. In some cases,
+ Abseil provides pieces missing from the C++ standard; in others, Abseil
+ provides alternatives to the standard for special needs.
+
+Package: libabsl-dev
+Architecture: any
+Multi-Arch: same
+Section: libdevel
+Depends:
+ libabsl20210324 (= ${binary:Version}),
+ ${misc:Depends},
+Recommends: cmake (>= 2.6) | pkg-config, g++ (>= 5.1)
+Description: ${source:Synopsis} (development files)
+ ${source:Extended-Description}
+ .
+ This package contains header files and other data necessary for developing with
+ Abseil.
+
+Package: libabsl20210324
+Architecture: any
+Multi-Arch: same
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: ${source:Synopsis}
+ ${source:Extended-Description}
+ .
+ This package contains Abseil's shared libraries.
diff --git a/debian/copyright b/debian/copyright
new file mode 100644
index 00000000..986a4261
--- /dev/null
+++ b/debian/copyright
@@ -0,0 +1,31 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: Abseil
+Upstream-Contact: abseil-io@googlegroups.com
+Source: https://github.com/abseil/abseil-cpp/
+Copyright: 2017 The Abseil Authors
+License: Apache-2.0
+
+Files: *
+Copyright:
+ 2000-2017 Google Inc.
+ 2017-2021 The Abseil Authors
+License: Apache-2.0
+
+Files: debian/*
+Copyright: 2020 Google LLC
+License: Apache-2.0
+
+License: Apache-2.0
+ Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+ this file except in compliance with the License. You may obtain a copy of the
+ License at
+ .
+     https://www.apache.org/licenses/LICENSE-2.0
+ .
+ Unless required by applicable law or agreed to in writing, software distributed
+ under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ specific language governing permissions and limitations under the License.
+ .
+ On Debian systems, the complete text of the Apache License, Version 2.0, can be
+ found in "/usr/share/common-licenses/Apache-2.0".
diff --git a/debian/gbp.conf b/debian/gbp.conf
new file mode 100644
index 00000000..f54fc37e
--- /dev/null
+++ b/debian/gbp.conf
@@ -0,0 +1,16 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+[DEFAULT]
+upstream-tag = 20210324.1
diff --git a/debian/libabsl-dev.install b/debian/libabsl-dev.install
new file mode 100644
index 00000000..9e2cb20e
--- /dev/null
+++ b/debian/libabsl-dev.install
@@ -0,0 +1,19 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+usr/include/absl
+usr/lib/*/*.a
+usr/lib/*/*.so
+usr/lib/*/cmake
+usr/lib/*/pkgconfig/*.pc
diff --git a/debian/libabsl20210324.install b/debian/libabsl20210324.install
new file mode 100644
index 00000000..ab3017e5
--- /dev/null
+++ b/debian/libabsl20210324.install
@@ -0,0 +1,15 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+usr/lib/*/libabsl_*.so.*
diff --git a/debian/libabsl20210324.lintian-overrides b/debian/libabsl20210324.lintian-overrides
new file mode 100644
index 00000000..7557abac
--- /dev/null
+++ b/debian/libabsl20210324.lintian-overrides
@@ -0,0 +1,16 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+libabsl20210324: no-symbols-control-file usr/lib/*/libabsl_*
+libabsl20210324: package-name-doesnt-match-sonames libabsl-*
diff --git a/debian/libabsl20210324.shlibs b/debian/libabsl20210324.shlibs
new file mode 100644
index 00000000..64ae93f1
--- /dev/null
+++ b/debian/libabsl20210324.shlibs
@@ -0,0 +1,75 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+libabsl_bad_any_cast_impl 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_bad_optional_access 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_bad_variant_access 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_base 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_city 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_civil_time 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_cord 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_debugging_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_demangle_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_examine_stack 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_exponential_biased 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_failure_signal_handler 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_commandlineflag 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_commandlineflag_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_config 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_marshalling 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_parse 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_private_handle_accessor 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_program_name 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_reflection 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_usage 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_flags_usage_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_graphcycles_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_hash 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_hashtablez_sampler 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_int128 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_leak_check 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_leak_check_disable 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_log_severity 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_malloc_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_periodic_sampler 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_distributions 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_distribution_test_util 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_platform 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_pool_urbg 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_randen 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_randen_hwaes 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_randen_hwaes_impl 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_randen_slow 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_internal_seed_material 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_seed_gen_exception 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_random_seed_sequences 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_raw_hash_set 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_raw_logging_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_scoped_set_env 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_spinlock_wait 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_stacktrace 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_status 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_statusor 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_str_format_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_strerror 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_strings 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_strings_internal 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_symbolize 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_synchronization 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_throw_delegate 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_time 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_time_zone 20210324 libabsl20210324 (>= 0~20210324.1-1)
+libabsl_wyhash 20210324 libabsl20210324 (>= 0~20210324.1-1)
diff --git a/debian/patches/configure.diff b/debian/patches/configure.diff
new file mode 100644
index 00000000..8138899f
--- /dev/null
+++ b/debian/patches/configure.diff
@@ -0,0 +1,115 @@
+From: Benjamin Barenblat <bbaren@google.com>
+Subject: Set package configuration options
+Forwarded: not-needed
+
+Configure Abseil for Debian.
+
+  - Set the SONAME appropriately.
+
+  - To minimize the possibility of future ABI breakage, treat absl::any,
+    absl::optional, absl::string_view, and absl::variant as their own types
+    (rather than aliases for the std:: versions), and compile everything in an
+    inline namespace.
+
+  - Enable upstream's hardened build mode.
+
+  - Disable Intel SSE2 on i386, since Debian supports some i386 processors
+    without that extension. Keep it enabled on amd64, since all amd64 processors
+    have it.
+
+  - Disable Intel SSSE3 entirely, since no i386 processor supports it and Debian
+    supports amd64 processors without it.
+
+--- a/CMake/AbseilHelpers.cmake
++++ b/CMake/AbseilHelpers.cmake
+@@ -263,7 +263,8 @@
+     if(ABSL_ENABLE_INSTALL)
+       set_target_properties(${_NAME} PROPERTIES
+         OUTPUT_NAME "absl_${_NAME}"
+-        SOVERSION "2103.0.1"
++        SOVERSION 20210324
++        VERSION "20210324.0.0"
+       )
+     endif()
+   else()
+--- a/absl/base/options.h
++++ b/absl/base/options.h
+@@ -100,7 +100,7 @@
+ // User code should not inspect this macro.  To check in the preprocessor if
+ // absl::any is a typedef of std::any, use the feature macro ABSL_USES_STD_ANY.
+ 
+-#define ABSL_OPTION_USE_STD_ANY 2
++#define ABSL_OPTION_USE_STD_ANY 0
+ 
+ 
+ // ABSL_OPTION_USE_STD_OPTIONAL
+@@ -127,7 +127,7 @@
+ // absl::optional is a typedef of std::optional, use the feature macro
+ // ABSL_USES_STD_OPTIONAL.
+ 
+-#define ABSL_OPTION_USE_STD_OPTIONAL 2
++#define ABSL_OPTION_USE_STD_OPTIONAL 0
+ 
+ 
+ // ABSL_OPTION_USE_STD_STRING_VIEW
+@@ -154,7 +154,7 @@
+ // absl::string_view is a typedef of std::string_view, use the feature macro
+ // ABSL_USES_STD_STRING_VIEW.
+ 
+-#define ABSL_OPTION_USE_STD_STRING_VIEW 2
++#define ABSL_OPTION_USE_STD_STRING_VIEW 0
+ 
+ // ABSL_OPTION_USE_STD_VARIANT
+ //
+@@ -180,7 +180,7 @@
+ // absl::variant is a typedef of std::variant, use the feature macro
+ // ABSL_USES_STD_VARIANT.
+ 
+-#define ABSL_OPTION_USE_STD_VARIANT 2
++#define ABSL_OPTION_USE_STD_VARIANT 0
+ 
+ 
+ // ABSL_OPTION_USE_INLINE_NAMESPACE
+@@ -206,7 +206,7 @@
+ // allowed.
+ 
+ #define ABSL_OPTION_USE_INLINE_NAMESPACE 1
+-#define ABSL_OPTION_INLINE_NAMESPACE_NAME lts_20210324
++#define ABSL_OPTION_INLINE_NAMESPACE_NAME debian2
+ 
+ // ABSL_OPTION_HARDENED
+ //
+@@ -233,6 +233,6 @@
+ // checks enabled by this option may abort the program in a different way and
+ // log additional information when `NDEBUG` is not defined.
+ 
+-#define ABSL_OPTION_HARDENED 0
++#define ABSL_OPTION_HARDENED 1
+ 
+ #endif  // ABSL_BASE_OPTIONS_H_
+--- a/absl/container/internal/have_sse.h
++++ b/absl/container/internal/have_sse.h
+@@ -17,22 +17,14 @@
+ #define ABSL_CONTAINER_INTERNAL_HAVE_SSE_H_
+ 
+ #ifndef ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSE2
+-#if defined(__SSE2__) ||  \
+-    (defined(_MSC_VER) && \
+-     (defined(_M_X64) || (defined(_M_IX86) && _M_IX86_FP >= 2)))
++#if defined(__x86_64__) || (defined(_MSC_VER) && defined(_M_X64))
+ #define ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSE2 1
+ #else
+ #define ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSE2 0
+ #endif
+ #endif
+ 
+-#ifndef ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSSE3
+-#ifdef __SSSE3__
+-#define ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSSE3 1
+-#else
+ #define ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSSE3 0
+-#endif
+-#endif
+ 
+ #if ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSSE3 && \
+     !ABSL_INTERNAL_RAW_HASH_SET_HAVE_SSE2
diff --git a/debian/patches/cordrepring-typo.diff b/debian/patches/cordrepring-typo.diff
new file mode 100644
index 00000000..6f21896b
--- /dev/null
+++ b/debian/patches/cordrepring-typo.diff
@@ -0,0 +1,20 @@
+From: Benjamin Barenblat <bbaren@google.com>
+Subject: Fix typo in CordRepRing error message
+Forwarded: yes
+Applied-Upstream: https://github.com/abseil/abseil-cpp/commit/b97a1ecda869ca8754d467a56c50275cebfeb328
+
+The author works at Google. Upstream applied this patch as Piper
+revision 367481280 and exported it to GitHub; the Applied-Upstream URL
+above points to the exported commit.
+
+--- a/absl/strings/internal/cord_rep_ring.cc
++++ b/absl/strings/internal/cord_rep_ring.cc
+@@ -301,7 +301,7 @@
+     if (offset >= child->length || entry_length > child->length - offset) {
+       output << "entry[" << head << "] has offset " << offset
+              << " and entry length " << entry_length
+-             << " which are outside of the childs length of " << child->length;
++             << " which are outside of the child's length of " << child->length;
+       return false;
+     }
+ 
diff --git a/debian/patches/float-rounding.diff b/debian/patches/float-rounding.diff
new file mode 100644
index 00000000..005e08be
--- /dev/null
+++ b/debian/patches/float-rounding.diff
@@ -0,0 +1,46 @@
+From: Benjamin Barenblat <bbaren@google.com>
+Subject: Round floats using round(x), not static_cast<int>(x + 0.5)
+Forwarded: yes
+Applied-Upstream: https://github.com/abseil/abseil-cpp/commit/d96e287417766deddbff2d01b96321288c59491e
+
+Adding 0.5 to an IEEE float may cause one bit of precision loss, which
+is enough to change the result in certain cases. For example,
+
+    static_cast<int>(std::round(0.49999999999999994)) == 0
+    static_cast<int>(0.49999999999999994 + 0.5) == 1
+
+The author works at Google. Upstream applied this patch as Piper
+revision 369926519 and exported it to GitHub; the Applied-Upstream URL
+above points to the exported commit.
+
+--- a/absl/time/duration_test.cc
++++ b/absl/time/duration_test.cc
+@@ -1320,7 +1320,7 @@ TEST(Duration, SmallConversions) {
+ 
+   EXPECT_EQ(absl::ZeroDuration(), absl::Seconds(0));
+   // TODO(bww): Is the next one OK?
+-  EXPECT_EQ(absl::ZeroDuration(), absl::Seconds(0.124999999e-9));
++  EXPECT_EQ(absl::ZeroDuration(), absl::Seconds(std::nextafter(0.125e-9, 0)));
+   EXPECT_EQ(absl::Nanoseconds(1) / 4, absl::Seconds(0.125e-9));
+   EXPECT_EQ(absl::Nanoseconds(1) / 4, absl::Seconds(0.250e-9));
+   EXPECT_EQ(absl::Nanoseconds(1) / 2, absl::Seconds(0.375e-9));
+@@ -1330,7 +1330,7 @@ TEST(Duration, SmallConversions) {
+   EXPECT_EQ(absl::Nanoseconds(1), absl::Seconds(0.875e-9));
+   EXPECT_EQ(absl::Nanoseconds(1), absl::Seconds(1.000e-9));
+ 
+-  EXPECT_EQ(absl::ZeroDuration(), absl::Seconds(-0.124999999e-9));
++  EXPECT_EQ(absl::ZeroDuration(), absl::Seconds(std::nextafter(-0.125e-9, 0)));
+   EXPECT_EQ(-absl::Nanoseconds(1) / 4, absl::Seconds(-0.125e-9));
+   EXPECT_EQ(-absl::Nanoseconds(1) / 4, absl::Seconds(-0.250e-9));
+   EXPECT_EQ(-absl::Nanoseconds(1) / 2, absl::Seconds(-0.375e-9));
+--- a/absl/time/time.h
++++ b/absl/time/time.h
+@@ -1352,7 +1352,7 @@
+ inline Duration MakePosDoubleDuration(double n) {
+   const int64_t int_secs = static_cast<int64_t>(n);
+   const uint32_t ticks = static_cast<uint32_t>(
+-      (n - static_cast<double>(int_secs)) * kTicksPerSecond + 0.5);
++      std::round((n - static_cast<double>(int_secs)) * kTicksPerSecond));
+   return ticks < kTicksPerSecond
+              ? MakeDuration(int_secs, ticks)
+              : MakeDuration(int_secs + 1, ticks - kTicksPerSecond);
diff --git a/debian/patches/latomic.diff b/debian/patches/latomic.diff
new file mode 100644
index 00000000..404144e2
--- /dev/null
+++ b/debian/patches/latomic.diff
@@ -0,0 +1,20 @@
+From: Benjamin Barenblat <bbaren@google.com>
+Subject: Use libatomic if necessary
+Bug-Debian: https://bugs.debian.org/973492
+
+On some architectures, notably armel, Abseil needs symbols defined in
+libatomic. Abseil does not currently have a well-developed system to
+declare external library dependencies, so just have the linker determine
+if anything needs libatomic and add the DT_NEEDED entry where necessary.
+
+--- a/absl/copts/AbseilConfigureCopts.cmake
++++ b/absl/copts/AbseilConfigureCopts.cmake
+@@ -62,4 +62,8 @@
+   set(ABSL_TEST_COPTS "")
+ endif()
+ 
++list(APPEND ABSL_DEFAULT_LINKOPTS
++    "-Wl,--as-needed" "-latomic" "-Wl,--no-as-needed"
++)
++
+ set(ABSL_CXX_STANDARD "${CMAKE_CXX_STANDARD}")
diff --git a/debian/patches/series b/debian/patches/series
new file mode 100644
index 00000000..4e55e401
--- /dev/null
+++ b/debian/patches/series
@@ -0,0 +1,6 @@
+configure.diff
+std-hash.diff
+latomic.diff
+cordrepring-typo.diff
+thumb-function-bounds.diff
+float-rounding.diff
diff --git a/debian/patches/std-hash.diff b/debian/patches/std-hash.diff
new file mode 100644
index 00000000..52096742
--- /dev/null
+++ b/debian/patches/std-hash.diff
@@ -0,0 +1,46 @@
+From: Benjamin Barenblat <bbaren@google.com>
+Subject: Work around broken std::hash on s390x
+Forwarded: no
+Bug-Debian: https://bugs.debian.org/977638
+
+On s390x, std::hash hashes large classes of data to the same value, which
+violates assumptions made by the Abseil tests. #ifdef out the test code that
+depends on those assumptions.
+
+--- a/absl/hash/hash_test.cc
++++ b/absl/hash/hash_test.cc
+@@ -358,6 +358,8 @@
+ TEST(HashValueTest, StdBitset) {
+   EXPECT_TRUE((is_hashable<std::bitset<257>>::value));
+ 
++  // The following assertions fail on s390x (https://bugs.debian.org/977638).
++#ifndef __s390x__
+   EXPECT_TRUE(absl::VerifyTypeImplementsAbslHashCorrectly(
+       {std::bitset<2>("00"), std::bitset<2>("01"), std::bitset<2>("10"),
+        std::bitset<2>("11")}));
+@@ -379,6 +381,7 @@
+        std::bitset<kNumBits>(bit_strings[3].c_str()),
+        std::bitset<kNumBits>(bit_strings[4].c_str()),
+        std::bitset<kNumBits>(bit_strings[5].c_str())}));
++#endif
+ }  // namespace
+ 
+ template <typename T>
+@@ -400,10 +403,15 @@
+ }
+ 
+ REGISTER_TYPED_TEST_CASE_P(HashValueSequenceTest, BasicUsage);
++// std::vector<bool> tests fail on s390x, so exclude them. See
++// https://bugs.debian.org/977638.
+ using IntSequenceTypes =
+     testing::Types<std::deque<int>, std::forward_list<int>, std::list<int>,
+-                   std::vector<int>, std::vector<bool>, std::set<int>,
+-                   std::multiset<int>>;
++                   std::vector<int>,
++#ifndef __s390x__
++                   std::vector<bool>,
++#endif
++                   std::set<int>, std::multiset<int>>;
+ INSTANTIATE_TYPED_TEST_CASE_P(My, HashValueSequenceTest, IntSequenceTypes);
+ 
+ // Private type that only supports AbslHashValue to make sure our chosen hash
diff --git a/debian/patches/thumb-function-bounds.diff b/debian/patches/thumb-function-bounds.diff
new file mode 100644
index 00000000..1fd8c729
--- /dev/null
+++ b/debian/patches/thumb-function-bounds.diff
@@ -0,0 +1,96 @@
+From: Benjamin Barenblat <bbaren@google.com>
+Subject: Correct Thumb function bound computation in the symbolizer
+Forwarded: yes
+Applied-Upstream: https://github.com/abseil/abseil-cpp/commit/1ae9b71c474628d60eb251a3f62967fe64151bb2
+
+On 32-bit ARM, all functions are aligned to multiples of two bytes, and
+the lowest-order bit in a function’s address is ignored by the CPU when
+computing branch targets. That bit is still present in instructions and
+ELF symbol tables, though; it’s repurposed to indicate whether the
+function contains ARM or Thumb code. If the symbolizer doesn’t ignore
+that bit, it will believe Thumb functions have boundaries that are off
+by one byte, so instruct the symbolizer to null out the lowest-order bit
+after retrieving it from the symbol table.
+
+The author works at Google. Upstream applied this patch as Piper
+revision 369254082 and exported it to GitHub; the Applied-Upstream URL
+above points to the exported commit.
+
+--- a/absl/debugging/symbolize_elf.inc
++++ b/absl/debugging/symbolize_elf.inc
+@@ -701,6 +701,16 @@
+       const char *start_address =
+           ComputeOffset(original_start_address, relocation);
+ 
++#ifdef __arm__
++      // ARM functions are always aligned to multiples of two bytes; the
++      // lowest-order bit in start_address is ignored by the CPU and indicates
++      // whether the function contains ARM (0) or Thumb (1) code. We don't care
++      // about what encoding is being used; we just want the real start address
++      // of the function.
++      start_address = reinterpret_cast<const char *>(
++          reinterpret_cast<uintptr_t>(start_address) & ~1);
++#endif
++
+       if (deref_function_descriptor_pointer &&
+           InSection(original_start_address, opd)) {
+         // The opd section is mapped into memory.  Just dereference
+--- a/absl/debugging/symbolize_test.cc
++++ b/absl/debugging/symbolize_test.cc
+@@ -477,6 +477,46 @@
+ #endif
+ }
+ 
++#if defined(__arm__) && ABSL_HAVE_ATTRIBUTE(target)
++// Test that we correctly identify bounds of Thumb functions on ARM.
++//
++// Thumb functions have the lowest-order bit set in their addresses in the ELF
++// symbol table. This requires some extra logic to properly compute function
++// bounds. To test this logic, nudge a Thumb function right up against an ARM
++// function and try to symbolize the ARM function.
++//
++// A naive implementation will simply use the Thumb function's entry point as
++// written in the symbol table and will therefore treat the Thumb function as
++// extending one byte further in the instruction stream than it actually does.
++// When asked to symbolize the start of the ARM function, it will identify an
++// overlap between the Thumb and ARM functions, and it will return the name of
++// the Thumb function.
++//
++// A correct implementation, on the other hand, will null out the lowest-order
++// bit in the Thumb function's entry point. It will correctly compute the end of
++// the Thumb function, it will find no overlap between the Thumb and ARM
++// functions, and it will return the name of the ARM function.
++
++__attribute__((target("thumb"))) int ArmThumbOverlapThumb(int x) {
++  return x * x * x;
++}
++
++__attribute__((target("arm"))) int ArmThumbOverlapArm(int x) {
++  return x * x * x;
++}
++
++void ABSL_ATTRIBUTE_NOINLINE TestArmThumbOverlap() {
++#if defined(ABSL_HAVE_ATTRIBUTE_NOINLINE)
++  const char *symbol = TrySymbolize((void *)&ArmThumbOverlapArm);
++  ABSL_RAW_CHECK(symbol != nullptr, "TestArmThumbOverlap failed");
++  ABSL_RAW_CHECK(strcmp("ArmThumbOverlapArm()", symbol) == 0,
++                 "TestArmThumbOverlap failed");
++  std::cout << "TestArmThumbOverlap passed" << std::endl;
++#endif
++}
++
++#endif  // defined(__arm__) && ABSL_HAVE_ATTRIBUTE(target)
++
+ #elif defined(_WIN32)
+ #if !defined(ABSL_CONSUME_DLL)
+ 
+@@ -551,6 +591,9 @@
+   TestWithPCInsideInlineFunction();
+   TestWithPCInsideNonInlineFunction();
+   TestWithReturnAddress();
++#if defined(__arm__) && ABSL_HAVE_ATTRIBUTE(target)
++  TestArmThumbOverlap();
++#endif
+ #endif
+ 
+   return RUN_ALL_TESTS();
diff --git a/debian/rules b/debian/rules
new file mode 100755
index 00000000..d9a52e99
--- /dev/null
+++ b/debian/rules
@@ -0,0 +1,54 @@
+#!/usr/bin/make -f
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+include /usr/share/dpkg/architecture.mk
+
+export DEB_BUILD_MAINT_OPTIONS = hardening=+bindnow reproducible=+fixfilepath
+
+# Unit tests aren't working on all platforms yet.
+ifneq ($(filter $(DEB_HOST_ARCH),amd64 arm64 ppc64el),)
+ABSL_RUN_TESTS=ON
+else
+ABSL_RUN_TESTS=OFF
+endif
+
+%:
+	dh $@
+
+override_dh_auto_clean:
+	$(RM) -r $(CURDIR)/static
+	$(RM) -r $(CURDIR)/shared
+
+override_dh_auto_configure:
+	dh_auto_configure -Bstatic -- -DCMAKE_CXX_STANDARD=14 -DBUILD_SHARED_LIBS=OFF
+ifeq ($(ABSL_RUN_TESTS),ON)
+	dh_auto_configure -Bshared -- -DCMAKE_CXX_STANDARD=14 -DBUILD_SHARED_LIBS=ON -DBUILD_TESTING=ON -DABSL_USE_GOOGLETEST_HEAD=OFF
+else
+	dh_auto_configure -Bshared -- -DCMAKE_CXX_STANDARD=14 -DBUILD_SHARED_LIBS=ON
+endif
+
+override_dh_auto_build:
+	dh_auto_build -Bstatic
+	dh_auto_build -Bshared
+
+ifeq ($(ABSL_RUN_TESTS),ON)
+override_dh_auto_test:
+	dh_auto_test -Bshared
+endif
+
+override_dh_auto_install:
+	dh_auto_install -Bstatic
+	dh_auto_install -Bshared
+	find debian/tmp -type d -empty -delete
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 00000000..163aaf8d
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (quilt)
diff --git a/debian/tests/cmake b/debian/tests/cmake
new file mode 100755
index 00000000..1eb04de9
--- /dev/null
+++ b/debian/tests/cmake
@@ -0,0 +1,45 @@
+#!/bin/sh -eu
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+readonly TMP="$(mktemp -d)"
+trap "rm -rf \"$TMP\"" EXIT
+cd "$TMP"
+
+cat >test.cc <<EOF
+#include <absl/strings/numbers.h>
+
+int main(int argc, char* argv[]) {
+  int n;
+  if (!absl::SimpleAtoi(argv[1], &n)) {
+    return 1;
+  }
+  return n;
+}
+EOF
+
+cat >CMakeLists.txt <<EOF
+cmake_minimum_required(VERSION 3.5)
+project(test CXX)
+set(CMAKE_CXX_STANDARD 14)
+add_executable(test test.cc)
+find_package(absl REQUIRED)
+target_link_libraries(test absl::strings)
+EOF
+
+mkdir build
+cd build
+cmake ..
+make
+./test 0
diff --git a/debian/tests/control b/debian/tests/control
new file mode 100644
index 00000000..43dc87cb
--- /dev/null
+++ b/debian/tests/control
@@ -0,0 +1,19 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+Tests: smoke
+Depends: @, g++, libgtest-dev
+
+Tests: cmake
+Depends: @, cmake (>= 3.5), g++, make
diff --git a/debian/tests/smoke b/debian/tests/smoke
new file mode 100755
index 00000000..7c4b66fa
--- /dev/null
+++ b/debian/tests/smoke
@@ -0,0 +1,37 @@
+#!/bin/sh -eu
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+readonly TMP="$(mktemp -d)"
+trap "rm -rf \"$TMP\"" EXIT
+cd "$TMP"
+
+cat >smoke.cc <<EOF
+#include <absl/strings/str_join.h>
+#include <gtest/gtest.h>
+
+#include <vector>
+
+namespace {
+
+TEST(AbseilTest, StrJoinWorks) {
+  std::vector<std::string> v = {"foo", "bar", "baz"};
+  EXPECT_EQ(absl::StrJoin(v, "-"), "foo-bar-baz");
+}
+
+}  // namespace
+EOF
+
+g++ -o smoke smoke.cc -labsl_strings -lgtest -lgtest_main -pthread
+./smoke
diff --git a/debian/watch b/debian/watch
new file mode 100644
index 00000000..e621a589
--- /dev/null
+++ b/debian/watch
@@ -0,0 +1,18 @@
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+version=4
+opts="filenamemangle=s%(?:.*?)?v?(\d[\d.]*)\.tar\.gz%@PACKAGE@-$1.tar.gz%, uversionmangle=s/^/0~/" \
+	https://github.com/abseil/abseil-cpp/releases \
+	(?:.*?/)?v?(\d[\d.]*)\.tar\.gz