Accepting request 1103184 from LibreOffice:Factory

Fix build on SLE12SP5 with cmake 3.5

OBS-URL: https://build.opensuse.org/request/show/1103184
OBS-URL: https://build.opensuse.org/package/show/devel:microos/abseil-cpp?expand=0&rev=18

abseil-cpp.changes

@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Wed Aug  9 15:18:16 UTC 2023 - Fridrich Strba <fstrba@suse.com>
+
+- Fix build on older systems by requiring C++17 compliant compiler
+- Added patch:
+  * cmake.patch
+    + lower the cmake requirement to 3.5 in order to be able to
+      build on SLE12SP5
+
 -------------------------------------------------------------------
 Thu Jun 29 09:52:24 UTC 2023 - Fabian Vogt <fvogt@suse.com>
 

abseil-cpp.spec

@@ -25,13 +25,20 @@ License:        Apache-2.0
 URL:            https://abseil.io/
 Source0:        https://github.com/abseil/abseil-cpp/archive/%{version}.tar.gz#/%{name}-%{version}.tar.gz
 Source1:        baselibs.conf
-BuildRequires:  c++_compiler
+%if 0%{?suse_version} < 1500
+BuildRequires:  gcc7
+BuildRequires:  gcc7-c++
+%else
+BuildRequires:  gcc >= 7
+BuildRequires:  gcc-c++ >= 7
+%endif
 BuildRequires:  cmake
 BuildRequires:  fdupes
 BuildRequires:  pkgconfig
 # PATCH-FIX-OPENSUSE options-{old,cxx17}.patch Ensure ABI stability regardless of compiler options
 %if 0%{?suse_version} < 1550
 Patch0:         options-old.patch
+Patch1:         cmake.patch
 %else
 Patch0:         options-cxx17.patch
 %endif
@@ -64,6 +71,10 @@ This package contains headers and build system files for it.
 %autosetup -p1
 
 %build
+%if 0%{?suse_version} < 1500
+export CC="gcc-7"
+export CXX="g++-7"
+%endif
 %cmake
 %cmake_build
 

cmake.patch

@@ -0,0 +1,11 @@
+--- abseil-cpp-20230125.3/CMakeLists.txt	2023-08-08 13:05:37.796998429 +0200
++++ abseil-cpp-20230125.3/CMakeLists.txt	2023-08-08 13:06:11.263885421 +0200
+@@ -16,7 +16,7 @@
+ 
+ # https://github.com/google/oss-policies-info/blob/main/foundational-cxx-support-matrix.md
+ # As of 2022-09-06, CMake 3.10 is the minimum supported version.
+-cmake_minimum_required(VERSION 3.10)
++cmake_minimum_required(VERSION 3.5)
+ 
+ # Compiler id for Apple Clang is now AppleClang.
+ if (POLICY CMP0025)