From 1f5e492f814061f32a4de100f049ee17ffe4d843 Mon Sep 17 00:00:00 2001
From: Alain Zscheile <zseri.devel@ytrizja.de>
Date: Mon, 5 Sep 2022 01:15:11 +0200
Subject: [PATCH] cmake build: don't hardcode absolute paths in install
 DESTINATIONs

Fixes #683

> Currently, the CMakeLists.txt and *.conf_install.cmake.in files contain
> absolute install paths, that is, not relative to ${CMAKE_INSTALL_PREFIX}.
> This makes packaging this program unusually hard.

Signed-off-by: Alain Zscheile <zseri.devel@ytrizja.de>
---
 CMakeLists.txt                  | 10 +++++-----
 logrotate.conf_install.cmake.in |  6 +++---
 tcmu.conf_install.cmake.in      |  6 +++---
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e565a671..be290fce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 2.8 FATAL_ERROR)
+cmake_minimum_required (VERSION 3.0 FATAL_ERROR)
 project (tcmu-runner C)
 set(VERSION 1.5.4)
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror -Wall -Wdeclaration-after-statement -std=c99")
@@ -324,9 +324,9 @@ configure_file (
 install(SCRIPT logrotate.conf_install.cmake)
 
 install(FILES org.kernel.TCMUService1.service
-  DESTINATION /usr/share/dbus-1/system-services)
-install(FILES tcmu-runner.conf DESTINATION /etc/dbus-1/system.d)
+  DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/dbus-1/system-services)
+install(FILES tcmu-runner.conf DESTINATION ${CMAKE_INSTALL_FULL_SYSCONFDIR}/dbus-1/system.d)
 if (SUPPORT_SYSTEMD)
-  install(FILES tcmu-runner.service DESTINATION /usr/lib/systemd/system/)
+  install(FILES tcmu-runner.service DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/systemd/system)
 endif (SUPPORT_SYSTEMD)
-install(FILES tcmu-runner.8 DESTINATION ${CMAKE_INSTALL_PREFIX}/share/man/man8)
+install(FILES tcmu-runner.8 DESTINATION ${CMAKE_INSTALL_MANDIR}/man8)
diff --git a/logrotate.conf_install.cmake.in b/logrotate.conf_install.cmake.in
index c8dcc40b..fa83c8e0 100644
--- a/logrotate.conf_install.cmake.in
+++ b/logrotate.conf_install.cmake.in
@@ -1,4 +1,4 @@
-if (EXISTS "/etc/logrotate.d/tcmu-runner")
-	file(INSTALL "/etc/logrotate.d/tcmu-runner" DESTINATION "/etc/logrotate.d/tcmu-runner.bak" RENAME "tcmu-runner")
+if (EXISTS "${CMAKE_INSTALL_FULL_SYSCONFDIR}/logrotate.d/tcmu-runner")
+	file(RENAME "${CMAKE_INSTALL_FULL_SYSCONFDIR}/logrotate.d/tcmu-runner" "${CMAKE_INSTALL_FULL_SYSCONFDIR}/logrotate.d/tcmu-runner.bak")
 endif()
-file(INSTALL "${PROJECT_SOURCE_DIR}/logrotate.conf" DESTINATION "/etc/logrotate.d" RENAME "tcmu-runner")
+install(FILES "${PROJECT_SOURCE_DIR}/logrotate.conf" DESTINATION "${CMAKE_INSTALL_FULL_SYSCONFDIR}/logrotate.d" RENAME "tcmu-runner")
diff --git a/tcmu.conf_install.cmake.in b/tcmu.conf_install.cmake.in
index 99775107..fc73221a 100644
--- a/tcmu.conf_install.cmake.in
+++ b/tcmu.conf_install.cmake.in
@@ -1,4 +1,4 @@
-if (EXISTS "/etc/tcmu/tcmu.conf")
-	file(INSTALL "/etc/tcmu/tcmu.conf" DESTINATION "/etc/tcmu/" RENAME "tcmu.conf.old")
+if (EXISTS "${CMAKE_INSTALL_FULL_SYSCONFDIR}/tcmu/tcmu.conf")
+	file(RENAME "${CMAKE_INSTALL_FULL_SYSCONFDIR}/tcmu/tcmu.conf" "${CMAKE_INSTALL_FULL_SYSCONFDIR}/tcmu/tcmu.conf.old")
 endif()
-file(INSTALL "${PROJECT_SOURCE_DIR}/tcmu.conf" DESTINATION "/etc/tcmu/")
+install(FILES "${PROJECT_SOURCE_DIR}/tcmu.conf" DESTINATION "${CMAKE_INSTALL_FULL_SYSCONFDIR}/tcmu")