From b704e2ee358646ba14f8dc5c723676c5e80dc495 Mon Sep 17 00:00:00 2001
From: Peter <petershh@disroot.org>
Date: Thu, 11 Jul 2024 20:55:24 +0300
Subject: [PATCH] Introduce utmps support (#1962)

utmps library can be used to provide utmp functionality on systems whose
libcs do not implement it, e.g. musl.

For more details, see https://skarnet.org/software/utmps/.

Signed-off-by: Peter Shkenev <petershh@disroot.org>
---
 CMakeLists.txt            |  3 +++
 cmake/Findutmps.cmake     | 12 ++++++++++++
 src/helper/CMakeLists.txt |  5 +++++
 3 files changed, 20 insertions(+)
 create mode 100644 cmake/Findutmps.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4e845434..690ee709 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -168,6 +168,9 @@ else()
     set(RUNTIME_DIR_DEFAULT "${CMAKE_INSTALL_FULL_LOCALSTATEDIR}/run/sddm")
 endif()
 
+# utmps
+find_package(utmps)
+add_feature_info("utmps" UTMPS_FOUND "utmps support")
 
 # Set constants
 set(DATA_INSTALL_DIR            "${CMAKE_INSTALL_FULL_DATADIR}/sddm"                CACHE PATH      "System application data install directory")
diff --git a/cmake/Findutmps.cmake b/cmake/Findutmps.cmake
new file mode 100644
index 00000000..0661875a
--- /dev/null
+++ b/cmake/Findutmps.cmake
@@ -0,0 +1,12 @@
+# - Try to find utmps and its dependencies
+# Once done this will define
+# UTMPS_FOUND - system has utmps and dependencies
+# UTMPS_INCLUDE_DIR - the utmps include dir
+# UTMPS_LIBRARIES - libutmps
+
+find_path(UTMPS_INCLUDE_DIR NAMES utmps/utmpx.h)
+find_library(UTMPS_LIBRARIES utmps)
+
+if (UTMPS_INCLUDE_DIR AND UTMPS_LIBRARIES)
+    set(UTMPS_FOUND TRUE)
+endif (UTMPS_INCLUDE_DIR AND UTMPS_LIBRARIES)
diff --git a/src/helper/CMakeLists.txt b/src/helper/CMakeLists.txt
index 9ec6cac4..f235a2c3 100644
--- a/src/helper/CMakeLists.txt
+++ b/src/helper/CMakeLists.txt
@@ -53,6 +53,11 @@ else()
     target_link_libraries(sddm-helper crypt)
 endif()
 
+if (UTMPS_FOUND)
+    target_include_directories(sddm-helper SYSTEM PRIVATE ${UTMPS_INCLUDE_DIR})
+    target_link_libraries(sddm-helper ${UTMPS_LIBRARIES})
+endif (UTMPS_FOUND)
+
 install(TARGETS sddm-helper RUNTIME DESTINATION "${CMAKE_INSTALL_LIBEXECDIR}")
 
 add_executable(sddm-helper-start-wayland HelperStartWayland.cpp waylandsocketwatcher.cpp waylandhelper.cpp ${CMAKE_SOURCE_DIR}/src/common/SignalHandler.cpp)