From 6273e593a35d96585b2c7b68d4b15150ca8097d3 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Thu, 23 Jun 2022 23:09:13 -0400
Subject: [PATCH] add "package" target to support building a windows installer
 with NSIS

---
 cmake/Modules/LAMMPSInterfacePlugin.cmake    |  7 +++++++
 examples/PACKAGES/pace/plugin/CMakeLists.txt | 17 +++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/cmake/Modules/LAMMPSInterfacePlugin.cmake b/cmake/Modules/LAMMPSInterfacePlugin.cmake
index 0cdf0bb564..d80d7609b7 100644
--- a/cmake/Modules/LAMMPSInterfacePlugin.cmake
+++ b/cmake/Modules/LAMMPSInterfacePlugin.cmake
@@ -81,6 +81,13 @@ function(get_newest_file path variable)
   set(${variable} ${_bestfile} PARENT_SCOPE)
 endfunction()
 
+# get LAMMPS version date
+function(get_lammps_version version_header variable)
+    file(STRINGS ${version_header} line REGEX LAMMPS_VERSION)
+    string(REGEX REPLACE "#define LAMMPS_VERSION \"([0-9]+) ([A-Za-z]+) ([0-9]+)\"" "\\1\\2\\3" date "${line}")
+    set(${variable} "${date}" PARENT_SCOPE)
+endfunction()
+
 #################################################################################
 # LAMMPS C++ interface. We only need the header related parts except on windows.
 add_library(lammps INTERFACE)
diff --git a/examples/PACKAGES/pace/plugin/CMakeLists.txt b/examples/PACKAGES/pace/plugin/CMakeLists.txt
index f4068a03c9..6ad9c791ba 100644
--- a/examples/PACKAGES/pace/plugin/CMakeLists.txt
+++ b/examples/PACKAGES/pace/plugin/CMakeLists.txt
@@ -31,6 +31,23 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL "Windows")
   if(CMAKE_CROSSCOMPILING)
     set_target_properties(paceplugin  PROPERTIES LINK_FLAGS "-Wl,--export-all-symbols")
   endif()
+
+  get_lammps_version(${LAMMPS_SOURCE_DIR}/version.h LAMMPS_VERSION)
+  find_program(MAKENSIS_PATH makensis)
+  if(MAKENSIS_PATH)
+    execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_SOURCE_DIR}/lammps.ico
+      ${CMAKE_SOURCE_DIR}/lammps-text-logo-wide.bmp ${CMAKE_SOURCE_DIR}/paceplugin.nsis ${CMAKE_BINARY_DIR})
+    if(BUILD_MPI)
+      add_custom_target(package ${MAKENSIS_PATH} -V1 -DVERSION=${LAMMPS_VERSION}-MPI paceplugin.nsis
+        DEPENDS paceplugin
+        BYPRODUCTS LAMMPS-ML-PACE-plugin-${LAMMPS_VERSION}-MPI.exe)
+    else()
+      add_custom_target(package ${MAKENSIS_PATH} -V1 -DVERSION=${LAMMPS_VERSION} paceplugin.nsis
+        COMMAND ${CMAKE_COMMAND} -E echo ${PWD}
+        DEPENDS paceplugin lammps.ico lammps-text-logo-wide.bmp paceplugin.nsis
+        BYPRODUCTS LAMMPS-ML-PACE-plugin-${LAMMPS_VERSION}.exe)
+    endif()
+  endif()
 else()
   set_target_properties(paceplugin PROPERTIES LINK_FLAGS "-rdynamic")
 endif()