From cf15841bba3ccf99174dd776ecd5bba51aa35d88 Mon Sep 17 00:00:00 2001
From: Robin Krahl <me@robin-krahl.de>
Date: Thu, 21 Jun 2018 11:13:24 +0200
Subject: Add version.cc generation to qmake build

To generate the version.cc file with the correct version information,
this patch introduces new variables VERSION_MAJOR, VERSION_MINOR and
VERSION_GIT with the required information and then defines a custom
compiler that calls sed to replace the placeholders in version.cc.in and
to create version.cc.
---
 libnitrokey.pro | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/libnitrokey.pro b/libnitrokey.pro
index ea86294..5752764 100644
--- a/libnitrokey.pro
+++ b/libnitrokey.pro
@@ -7,7 +7,10 @@ CONFIG   += c++14 shared debug
 TEMPLATE     = lib
 TARGET = nitrokey
 
-VERSION = 3.3
+VERSION_MAJOR = 3
+VERSION_MINOR = 3
+VERSION_GIT = $$system(git describe --always)
+VERSION = $${VERSION_MAJOR}.$${VERSION_MINOR}
 QMAKE_TARGET_COMPANY = Nitrokey
 QMAKE_TARGET_PRODUCT = libnitrokey
 QMAKE_TARGET_DESCRIPTION = Communicate with Nitrokey stick devices in a clean and easy manner
@@ -44,6 +47,19 @@ SOURCES = \
    $$PWD/NK_C_API.cc
 
 
+VERSION_SOURCES = $$PWD/version.cc.in
+
+
+sed_version.output = ${QMAKE_FILE_BASE}
+sed_version.commands = cat ${QMAKE_FILE_NAME} \
+    | sed 's/@PROJECT_VERSION_MAJOR@/$${VERSION_MAJOR}/' \
+    | sed 's/@PROJECT_VERSION_MINOR@/$${VERSION_MINOR}/' \
+    | sed 's/@PROJECT_VERSION_GIT@/$${VERSION_GIT}/' \
+    > ${QMAKE_FILE_OUT}
+sed_version.input = VERSION_SOURCES
+sed_version.variable_out = SOURCES
+QMAKE_EXTRA_COMPILERS += sed_version
+
 tests {
     SOURCES += \
        $$PWD/unittest/catch_main.cpp \
@@ -54,6 +70,7 @@ tests {
        $$PWD/unittest/test_HOTP.cc
 }
 
+
 unix:!macx{
 #   SOURCES += $$PWD/hidapi/linux/hid.c
     LIBS += -lhidapi-libusb
-- 
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