From d349796363163419026d7ced0f46f3702ba4a2df Mon Sep 17 00:00:00 2001
From: Roland Conybeare <rconybeare@gmail.com>
Date: Tue, 26 Sep 2023 17:11:57 -0400
Subject: [PATCH] initial commit

---
 .gitignore         |  1 +
 CMakeLists.txt     | 17 +++++++++++++++++
 README.md          | 21 +++++++++++++++++++++
 cmake/xo_cxx.cmake | 23 +++++++++++++++++++++++
 4 files changed, 62 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 CMakeLists.txt
 create mode 100644 README.md
 create mode 100644 cmake/xo_cxx.cmake

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..378eac25
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 00000000..b1480c47
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(xo_macros VERSION 1.0)
+
+# if any are useful for this project..
+#include (cmake/foo.cmake)
+
+# ----------------------------------------------------------------
+# cmake export
+
+set(XO_PROJECT_NAME xo_macros)
+
+install(
+    FILES
+    "cmake/xo_cxx.cmake"
+    DESTINATION share/cmake/${XO_PROJECT_NAME}
+)
diff --git a/README.md b/README.md
new file mode 100644
index 00000000..a06e0291
--- /dev/null
+++ b/README.md
@@ -0,0 +1,21 @@
+# XO cmake modules
+
+Collects cmake macros to be shared across XO projects (e.g. indentlog, reflect, kalman, ..)
+
+## Features
+
+- support for both manyrepo and monorepo projects
+- support for generating cmake `xxxConfig.cmake` files,  so cmake `find_package()` works reliably
+
+## Example
+
+In some XO project `foo`:
+```
+$ cd build
+$ cmake -DCMAKE_MODULE_PATH=/usr/local/share/cmake ..
+```
+
+then in `foo/CMakeLists.txt`:
+```
+include(xo_macros/xo_cxx)
+```
diff --git a/cmake/xo_cxx.cmake b/cmake/xo_cxx.cmake
new file mode 100644
index 00000000..6daf88f9
--- /dev/null
+++ b/cmake/xo_cxx.cmake
@@ -0,0 +1,23 @@
+set(XO_STANDARD_COMPILE_OPTIONS -Werror -Wall -Wextra)
+set(XO_COMPILE_OPTIONS ${XO_STANDARD_COMPILE_OPTIONS})
+
+macro(xo_copmile_options target)
+    target_copmile_options(${target} PRIVATE ${XO_COMPILE_OPTIONS})
+endmacro()
+
+# dependency on an xo library (including header-only libraries)
+# e.g. indentlog
+#
+# An xo package foo works with cmake
+#   find_package(foo)
+# by providing plugin .cmake files in
+#   ${PREFIX}/lib/cmake/foo/fooConfig.cmake
+#   ${PREFIX}/lib/cmake/foo/fooConfigVersion.cmake
+#   ${PREFIX}/lib/cmake/foo/fooTargets.cmake
+#
+# dep: name of required dependency,  e.g. indentlog
+#
+macro(xo_internal_dependency target dep)
+    find_pacakge(${dep} CONFIG REQUIRED)
+    target_link_libraries(${target} PUBLIC ${dep})
+endmacro()