bug#42151: [PATCH v2 1/4] gnu: Add sqlite/hurd with locking fix.

["Jan (janneke) Nieuwenhuizen" <janneke@gnu.org>]

* gnu/packages/patches/sqlite3-hurd.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/sqlite.scm (sqlite/hurd): Use it in new variable.
---
 gnu/local.mk                            |  1 +
 gnu/packages/patches/sqlite3-hurd.patch | 51 +++++++++++++++++++++++++
 gnu/packages/sqlite.scm                 |  9 +++++
 3 files changed, 61 insertions(+)
 create mode 100644 gnu/packages/patches/sqlite3-hurd.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 5c3b391960..e452004945 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -1370,6 +1370,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/sdl-pango-header-guard.patch		\
   %D%/packages/patches/sdl-pango-matrix_declarations.patch	\
   %D%/packages/patches/sdl-pango-sans-serif.patch		\
+  %D%/packages/patches/sqlite3-hurd.patch			\
   %D%/packages/patches/patchutils-test-perms.patch		\
   %D%/packages/patches/patch-hurd-path-max.patch		\
   %D%/packages/patches/perl-autosplit-default-time.patch	\
diff --git a/gnu/packages/patches/sqlite3-hurd.patch b/gnu/packages/patches/sqlite3-hurd.patch
new file mode 100644
index 0000000000..de87a30cb1
--- /dev/null
+++ b/gnu/packages/patches/sqlite3-hurd.patch
@@ -0,0 +1,51 @@
+Adapted from Debian: https://sources.debian.org/patches/sqlite3/3.31.1-5/20-hurd-locking-style.patch
+Upstream status: Not offered upstream.
+
+diff -purN sqlite-autoconf-3310100/sqlite3.c sqlite-autoconf-3310100-/sqlite3.c
+--- sqlite-autoconf-3310100/sqlite3.c	2020-01-27 21:25:19.000000000 +0100
++++ sqlite-autoconf-3310100-/sqlite3.c	2020-07-01 11:50:13.768333806 +0200
+@@ -33189,7 +33189,7 @@ SQLITE_PRIVATE const char *sqlite3Opcode
+ # include <sys/mman.h>
+ #endif
+ 
+-#if SQLITE_ENABLE_LOCKING_STYLE
++#if SQLITE_ENABLE_LOCKING_STYLE || defined(__GNU__)
+ /* # include <sys/ioctl.h> */
+ # include <sys/file.h>
+ # include <sys/param.h>
+@@ -35676,7 +35676,7 @@ static int dotlockClose(sqlite3_file *id
+ **
+ ** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off
+ */
+-#if SQLITE_ENABLE_LOCKING_STYLE
++#if SQLITE_ENABLE_LOCKING_STYLE || defined(__GNU__)
+ 
+ /*
+ ** Retry flock() calls that fail with EINTR
+@@ -38586,7 +38586,7 @@ IOMETHODS(
+   0                         /* xShmMap method */
+ )
+ 
+-#if SQLITE_ENABLE_LOCKING_STYLE
++#if SQLITE_ENABLE_LOCKING_STYLE || defined(__GNU__)
+ IOMETHODS(
+   flockIoFinder,            /* Finder function name */
+   flockIoMethods,           /* sqlite3_io_methods object name */
+@@ -41142,6 +41142,8 @@ SQLITE_API int sqlite3_os_init(void){
+     UNIXVFS("unix",          autolockIoFinder ),
+ #elif OS_VXWORKS
+     UNIXVFS("unix",          vxworksIoFinder ),
++#elif defined(__GNU__)
++    UNIXVFS("unix",          flockIoFinder ),
+ #else
+     UNIXVFS("unix",          posixIoFinder ),
+ #endif
+@@ -41151,7 +41153,7 @@ SQLITE_API int sqlite3_os_init(void){
+ #if OS_VXWORKS
+     UNIXVFS("unix-namedsem", semIoFinder ),
+ #endif
+-#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS
++#if SQLITE_ENABLE_LOCKING_STYLE || OS_VXWORKS || defined(__GNU__)
+     UNIXVFS("unix-posix",    posixIoFinder ),
+ #endif
+ #if SQLITE_ENABLE_LOCKING_STYLE
diff --git a/gnu/packages/sqlite.scm b/gnu/packages/sqlite.scm
index 8468131ddf..d5c44b0d0f 100644
--- a/gnu/packages/sqlite.scm
+++ b/gnu/packages/sqlite.scm
@@ -11,6 +11,7 @@
 ;;; Copyright © 2017 Jelle Licht <jlicht@fsfe.org>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Alex Vong <alexvong1995@gmail.com>
+;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -107,3 +108,11 @@ is in the public domain.")
 ;; commit fad5b1a6d8d9c36bea5785ae4fbc1beb37e644d7.
 (define-public sqlite-with-column-metadata
   (deprecated-package "sqlite-with-column-metadata" sqlite))
+
+(define-public sqlite/hurd
+  ;; TODO move into sqlite on the next rebuild cycle.
+  (package
+    (inherit sqlite)
+    (name "sqlite-for-hurd")
+    (source (origin (inherit (package-source sqlite))
+                    (patches (search-patches "sqlite3-hurd.patch"))))))
-- 
Jan Nieuwenhuizen <janneke@gnu.org> | GNU LilyPond http://lilypond.org
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