From 947ddc9e1b66e502f137790c6c623486bf0bb2c0 Mon Sep 17 00:00:00 2001
From: Sadie Powell <sadie@witchery.services>
Date: Tue, 30 Nov 2021 10:09:08 +0000
Subject: [PATCH 1/2] Fix building on CMake 4.

This is a partial backport from 2.1.
---
 CMakeLists.txt           | 14 ++------------
 include/CMakeLists.txt   |  2 +-
 src/CMakeLists.txt       |  2 +-
 src/tools/CMakeLists.txt |  2 +-
 4 files changed, 5 insertions(+), 15 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 822f6f39d..1b999afee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,14 +1,5 @@
 # This usage of CMake requires at least version 2.4 (checks are made to determine what to use when certain versions lack functions)
-cmake_minimum_required(VERSION 2.4 FATAL_ERROR)
-if(COMMAND cmake_policy)
-  cmake_policy(SET CMP0003 NEW)
-  if(POLICY CMP0026)
-    cmake_policy(SET CMP0026 OLD)
-  endif(POLICY CMP0026)
-  if(POLICY CMP0007)
-    cmake_policy(SET CMP0007 OLD)
-  endif(POLICY CMP0007)
-endif(COMMAND cmake_policy)
+cmake_minimum_required(VERSION 2.4...3.99 FATAL_ERROR)
 
 # Set the project as C++ primarily, but have C enabled for the checks required later
 project(Anope CXX)
@@ -422,7 +413,6 @@ read_from_file(${Anope_SOURCE_DIR}/src/version.sh "^VERSION_" VERSIONS)
 # Iterate through the strings found
 foreach(VERSION_STR ${VERSIONS})
   string(REGEX REPLACE "^VERSION_([A-Z]+)=\"?([^\"]*)\"?$" "\\1;\\2" VERSION_OUT ${VERSION_STR})
-  # Depends on CMP0007 OLD
   list(LENGTH VERSION_OUT VERSION_LEN)
   list(GET VERSION_OUT 0 VERSION_TYPE)
   if(${VERSION_LEN} GREATER 1)
@@ -488,7 +478,7 @@ add_subdirectory(modules)
 add_subdirectory(include)
 
 # Get the filename of the Anope binary, to use later
-get_target_property(SERVICES_BINARY ${PROGRAM_NAME} LOCATION)
+set(SERVICES_BINARY "$<TARGET_FILE:${PROGRAM_NAME}>")
 get_filename_component(SERVICES_BINARY ${SERVICES_BINARY} NAME)
 
 # At install time, create the following additional directories
diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
index a434be6e1..e76df454d 100644
--- a/include/CMakeLists.txt
+++ b/include/CMakeLists.txt
@@ -3,7 +3,7 @@ set_source_files_properties(version.cpp PROPERTIES LANGUAGE CXX COMPILE_FLAGS "$
 # Generate version-bin executable to modify version.h, setting it's linker flags as well
 add_executable(version-bin version.cpp)
 set_target_properties(version-bin PROPERTIES LINKER_LANGUAGE CXX LINK_FLAGS "${LDFLAGS}")
-get_target_property(version_BINARY version-bin LOCATION)
+set(version_BINARY "$<TARGET_FILE:version-bin>")
 # Modify version.h from the above executable, with dependencies to version.cpp
 # and all of the source files in the main build
 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/version.h ${CMAKE_CURRENT_BINARY_DIR}/build.h
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b390d164b..bdec61abf 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -97,7 +97,7 @@ if(GETTEXT_FOUND)
 endif(GETTEXT_FOUND)
 
 # Get the filename of the Anope executable as it is in on this system
-get_target_property(SERVICES_BINARY ${PROGRAM_NAME} LOCATION)
+set(SERVICES_BINARY "$<TARGET_FILE:${PROGRAM_NAME}>")
 get_filename_component(SERVICES_BINARY ${SERVICES_BINARY} NAME)
 # Add the Anope executable to the list of files for CPack to ignore
 add_to_cpack_ignored_files("${SERVICES_BINARY}$" TRUE)
diff --git a/src/tools/CMakeLists.txt b/src/tools/CMakeLists.txt
index 3e00b981d..29421aeeb 100644
--- a/src/tools/CMakeLists.txt
+++ b/src/tools/CMakeLists.txt
@@ -29,7 +29,7 @@ foreach(SRC ${TOOLS_SRCS})
       DESTINATION ${BIN_DIR}
     )
     # Add the executable to the list of files for CPack to ignore
-    get_target_property(EXE_BINARY ${EXE} LOCATION)
+    set(EXE_BINARY "$<TARGET_FILE:${EXE}>")
     get_filename_component(EXE_BINARY ${EXE_BINARY} NAME)
     add_to_cpack_ignored_files("${EXE_BINARY}$" TRUE)
   endif(NOT SKIP)

From 0b36ddfaf32b30dba22ec3a66a23b2e284c87e16 Mon Sep 17 00:00:00 2001
From: Sadie Powell <sadie@witchery.services>
Date: Wed, 2 Apr 2025 09:58:49 +0100
Subject: [PATCH 2/2] Fix building on old versions of RHEL.

---
 src/mail.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mail.cpp b/src/mail.cpp
index fe8bb0b90..bdad2447f 100644
--- a/src/mail.cpp
+++ b/src/mail.cpp
@@ -9,6 +9,8 @@
  * Based on the original code of Services by Andy Church.
  */
 
+#include <cerrno>
+
 #include "services.h"
 #include "mail.h"
 #include "config.h"