From 43b0ed1b219284fd74db7a93dd49bb29681fd7bb Mon Sep 17 00:00:00 2001
From: Jeremy Rifkin <51220084+jeremy-rifkin@users.noreply.github.com>
Date: Sat, 21 Dec 2024 15:41:13 -0600
Subject: [PATCH] Add version macros header

---
 CMakeLists.txt           |  5 +++++
 README.md                |  4 +++-
 cmake/InstallRules.cmake |  1 +
 cmake/in/version-hpp.in  | 11 +++++++++++
 test/demo.cpp            |  1 +
 5 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 cmake/in/version-hpp.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 601e632..4f41504 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -161,6 +161,11 @@ target_compile_options(
   ${warning_options}
 )
 
+set(CPPTRACE_VERSION_MAJOR ${CMAKE_PROJECT_VERSION_MAJOR})
+set(CPPTRACE_VERSION_MINOR ${CMAKE_PROJECT_VERSION_MINOR})
+set(CPPTRACE_VERSION_PATCH ${CMAKE_PROJECT_VERSION_PATCH})
+configure_file("${PROJECT_SOURCE_DIR}/cmake/in/version-hpp.in" "${PROJECT_BINARY_DIR}/include/cpptrace/version.hpp")
+
 # ---- Generate Build Info Headers ----
 
 if(build_type STREQUAL "STATIC")
diff --git a/README.md b/README.md
index 941e30c..3c5e7c7 100644
--- a/README.md
+++ b/README.md
@@ -787,8 +787,10 @@ Cpptrace provides a handful of headers to make inclusion more minimal.
 | `cpptrace/from_current.hpp` | [Traces From All Exceptions](#traces-from-all-exceptions)                                                                                                                                             |
 | `cpptrace/io.hpp`           | `operator<<` overloads for `std::ostream` and `std::formatter`s                                                                                                                                       |
 | `cpptrace/utils.hpp`        | Utility functions, configuration functions, and terminate utilities ([Utilities](#utilities), [Configuration](#configuration), and [Terminate Handling](#terminate-handling))                         |
+| `cpptrace/version.hpp`      | Library version macros                                                                                                                                                                                |
 
-The main cpptrace header is `cpptrace/cpptrace.hpp` which includes everything other than `from_current.hpp`.
+The main cpptrace header is `cpptrace/cpptrace.hpp` which includes everything other than `from_current.hpp` and
+`version.hpp`.
 
 # Supported Debug Formats
 
diff --git a/cmake/InstallRules.cmake b/cmake/InstallRules.cmake
index 85aa69f..b72d365 100644
--- a/cmake/InstallRules.cmake
+++ b/cmake/InstallRules.cmake
@@ -5,6 +5,7 @@ include(CMakePackageConfigHelpers)
 install(
   DIRECTORY
   "${PROJECT_SOURCE_DIR}/include/"     # our header files
+  "${PROJECT_BINARY_DIR}/include/"     # generated header files
   DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
   COMPONENT ${package_name}-development
   # PATTERN "**/third_party"    EXCLUDE  # skip third party directory
diff --git a/cmake/in/version-hpp.in b/cmake/in/version-hpp.in
new file mode 100644
index 0000000..34e043d
--- /dev/null
+++ b/cmake/in/version-hpp.in
@@ -0,0 +1,11 @@
+#ifndef CPPTRACE_VERSION_HPP
+#define CPPTRACE_VERSION_HPP
+
+#define CPPTRACE_VERSION_MAJOR @CPPTRACE_VERSION_MAJOR@
+#define CPPTRACE_VERSION_MINOR @CPPTRACE_VERSION_MINOR@
+#define CPPTRACE_VERSION_PATCH @CPPTRACE_VERSION_PATCH@
+
+#define CPPTRACE_TO_VERSION(MAJOR, MINOR, PATCH) ((MAJOR) * 10000 + (MINOR) * 100 + (PATCH))
+#define CPPTRACE_VERSION CPPTRACE_TO_VERSION(CPPTRACE_VERSION_MAJOR, CPPTRACE_VERSION_MINOR, CPPTRACE_VERSION_PATCH)
+
+#endif
diff --git a/test/demo.cpp b/test/demo.cpp
index 46ba38d..f51b523 100644
--- a/test/demo.cpp
+++ b/test/demo.cpp
@@ -1,4 +1,5 @@
 #include <cpptrace/cpptrace.hpp>
+#include <cpptrace/version.hpp>
 
 #include <algorithm>
 #include <cctype>