From 16362f42d01bab3055f97eceb062775d27d858c0 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Tue, 9 Jun 2026 11:46:36 +0100
Subject: [PATCH] cmake: Add `mp_headers` custom target

This target acts as a build-graph node for generated Cap'n Proto C++
headers. By providing this custom target, other targets that include
the headers can properly order themselves after the generation step
without needing to depend on the library target that also uses them.

This convenience target is necessary for proper build dependency
management, as the underlying `capnp_generate_cpp` function is not
CODEGEN-aware.
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 29678efb..ea91f98f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -139,6 +139,10 @@ configure_file(include/mp/config.h.in "${CMAKE_CURRENT_BINARY_DIR}/include/mp/co
 # Generated C++ Capn'Proto schema files
 capnp_generate_cpp(MP_PROXY_SRCS MP_PROXY_HDRS include/mp/proxy.capnp)
 set_source_files_properties("${MP_PROXY_SRCS}" PROPERTIES SKIP_LINTING TRUE) # Ignored before cmake 3.27
+# Build-graph node for generated headers. This lets targets that include
+# the headers order themselves after generation without depending on the
+# library target that also uses them.
+add_custom_target(mp_headers DEPENDS ${MP_PROXY_HDRS})
 
 # util library
 add_library(mputil OBJECT src/mp/util.cpp)