Fix build on s390x (#1969393)

firebird.spec

@@ -10,7 +10,7 @@
 
 Name:           firebird
 Version:        %{upversion}
-Release:        1%{?dist}
+Release:        2%{?dist}
 
 Summary:        SQL relational database management system
 License:        Interbase
@@ -30,9 +30,10 @@ Patch203:       no-copy-from-icu.patch
 Patch205:       cloop-honour-build-flags.patch
 
 # from upstream
-
-# Firebird 4 have build issues (bz 1969393)
-ExcludeArch:    s390x
+Patch301:       c++17.patch
+Patch302:       noexcept.patch
+Patch303:       fix_build_on_big_endian_platforms.patch
+Patch304:       ttmath-abseil.4.0.0.patch
 
 BuildRequires: autoconf
 BuildRequires: automake
@@ -197,8 +198,18 @@ in production systems, under a variety of names, since 1981.
 %patch101 -p1
 %patch203 -p1
 %patch205 -p1
+%patch301 -p1
+%patch302 -p1
+%ifarch s390x
+%patch303 -p1
+%patch304 -p1
+%endif
+
 
 %build
+%ifarch s390x
+%global _lto_cflags %{nil}
+%endif
 export CFLAGS="%{optflags} -fno-strict-aliasing"
 export CXXFLAGS="${CFLAGS} -fno-delete-null-pointer-checks"
 NOCONFIGURE=1 ./autogen.sh
@@ -368,6 +379,9 @@ fi
 
 
 %changelog
+* Fri Aug 20 2021 Philippe Makowski <makowski@fedoraproject.org> - 4.0.0.2496-2
+- Fix build on s390x (#1969393)
+
 * Tue Jun 08 2021 Philippe Makowski <makowski@fedoraproject.org> - 4.0.0.2496-1
 - Update to 4.0.0 (#1963311)
 

fix_build_on_big_endian_platforms.patch

@@ -0,0 +1,36 @@
+From cd0682bc55eb01d53278d09edc1e9e2e9bfb9983 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Dan=20Hor=C3=A1k?= <dan@danny.cz>
+Date: Fri, 11 Jun 2021 12:39:31 +0200
+Subject: [PATCH] fix build on big endian platforms (#6852)
+
+* fix missing declaration of type_alignments[] for big endian platforms
+* add missing definition of lwp for big endian platforms
+---
+ src/jrd/sort.cpp | 1 +
+ src/jrd/sort.h   | 1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/src/jrd/sort.cpp b/src/jrd/sort.cpp
+index 37f5f816407..77ca69c2536 100644
+--- a/src/jrd/sort.cpp
++++ b/src/jrd/sort.cpp
+@@ -713,6 +713,7 @@ void Sort::diddleKey(UCHAR* record, bool direction, bool duplicateHandling)
+ 	for (sort_key_def* key = m_description.begin(), *end = m_description.end(); key < end; key++)
+ 	{
+ 		UCHAR* p = record + key->getSkdOffset();
++		SORTP* lwp = (SORTP*) p;
+ 		USHORT n = key->getSkdLength();
+ 		USHORT complement = key->skd_flags & SKD_descending;
+ 
+diff --git a/src/jrd/sort.h b/src/jrd/sort.h
+index 8e23e70ccc5..e3bbbb7779c 100644
+--- a/src/jrd/sort.h
++++ b/src/jrd/sort.h
+@@ -27,6 +27,7 @@
+ #include "../include/fb_blk.h"
+ #include "../common/DecFloat.h"
+ #include "../jrd/TempSpace.h"
++#include "../jrd/align.h"
+ 
+ namespace Jrd {
+