From 084fabb0003fc674eff5af84e7ab6be0af45b1ca Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Thu, 18 Jul 2024 09:34:12 +1000
Subject: [PATCH] deps: add a small helper to locate lists of nerdcruft
 dependencies

---
 nc.cmake      |  1 +
 nc_deps.cmake | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 nc_deps.cmake

diff --git a/nc.cmake b/nc.cmake
index 93e929b..11197cb 100644
--- a/nc.cmake
+++ b/nc.cmake
@@ -19,3 +19,4 @@ include ("${CMAKE_CURRENT_LIST_DIR}/nc_sanitizer.cmake")
 include ("${CMAKE_CURRENT_LIST_DIR}/nc_platform.cmake")
 include ("${CMAKE_CURRENT_LIST_DIR}/nc_optimisation.cmake")
 include ("${CMAKE_CURRENT_LIST_DIR}/nc_warnings.cmake")
+include ("${CMAKE_CURRENT_LIST_DIR}/nc_deps.cmake")
\ No newline at end of file
diff --git a/nc_deps.cmake b/nc_deps.cmake
new file mode 100644
index 0000000..245eada
--- /dev/null
+++ b/nc_deps.cmake
@@ -0,0 +1,22 @@
+# Loads the provided arguments as components from find_package(cruft) if at least one is missing
+macro (nc_deps)
+    if (${ARGC} LESS_EQUAL 0)
+        message (FATAL_ERROR "nc_deps requires at least one component")
+    endif ()
+
+    set (__nc_deps_lib_FAIL)
+
+    foreach (__nc_deps_lib ${ARGN})
+        if (NOT TARGET cruft::${__nc_deps_lib})
+            message (WARNING "missing cruft::${lib}")
+            set (__nc_deps_lib_FAIL 1)
+            break ()
+        endif()
+    endforeach ()
+
+    if (DEFINED __nc_deps_lib_FAIL)
+        message (STATUS "using find_package for cruft::${ARGN}")
+        find_package(cruft CONFIG REQUIRED COMPONENTS ${ARGN})
+    endif ()
+endmacro ()
+