From 4c6ef278dca52223a9a76c467676fb39c489528c Mon Sep 17 00:00:00 2001
From: Federico Mena Quintero <federico@gnome.org>
Date: Tue, 25 Jun 2019 18:26:20 -0500
Subject: [PATCH] (#2): Generate a header file with the version number

Fixes https://gitlab.com/federicomenaquintero/bzip2/issues/2
---
 CMakeLists.txt  | 7 +++++++
 bz_version.h.in | 1 +
 bzlib.c         | 1 +
 bzlib_private.h | 2 --
 meson.build     | 8 ++++++++
 5 files changed, 17 insertions(+), 2 deletions(-)
 create mode 100644 bz_version.h.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a59ffb3..58fff94 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,13 @@ set(LT_AGE      0)
 set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
 include(Version)
 
+set(BZ_VERSION ${PROJECT_VERSION})
+configure_file (
+  "${PROJECT_SOURCE_DIR}/bz_version.h.in"
+  "${PROJECT_BINARY_DIR}/bz_version.h"
+)
+include_directories("${PROJECT_BINARY_DIR}")
+
 math(EXPR LT_SOVERSION "${LT_CURRENT} - ${LT_AGE}")
 set(LT_VERSION "${LT_SOVERSION}.${LT_AGE}.${LT_REVISION}")
 set(PACKAGE_VERSION "${PROJECT_VERSION}")
diff --git a/bz_version.h.in b/bz_version.h.in
new file mode 100644
index 0000000..1adb1b5
--- /dev/null
+++ b/bz_version.h.in
@@ -0,0 +1 @@
+#define BZ_VERSION "@BZ_VERSION@"
diff --git a/bzlib.c b/bzlib.c
index d202f71..ed38356 100644
--- a/bzlib.c
+++ b/bzlib.c
@@ -29,6 +29,7 @@
 */
 
 #include "bzlib_private.h"
+#include "bz_version.h"
 
 
 /*---------------------------------------------------*/
diff --git a/bzlib_private.h b/bzlib_private.h
index 06ee0b4..48b0614 100644
--- a/bzlib_private.h
+++ b/bzlib_private.h
@@ -36,8 +36,6 @@
 
 /*-- General stuff. --*/
 
-#define BZ_VERSION  "1.0.6, 6-Sept-2010"
-
 typedef char            Char;
 typedef unsigned char   Bool;
 typedef unsigned char   UChar;
diff --git a/meson.build b/meson.build
index 4672f3a..684d1ad 100644
--- a/meson.build
+++ b/meson.build
@@ -6,6 +6,14 @@ project(
   default_options : ['c_std=c89', 'warning_level=1'],
 )
 
+conf_data = configuration_data()
+conf_data.set('BZ_VERSION', meson.project_version())
+configure_file(
+  input: 'bz_version.h.in',
+  output: 'bz_version.h',
+  configuration: conf_data
+)
+
 cc = meson.get_compiler('c')
 add_project_arguments(cc.get_supported_arguments([
     '-Winline',