From 9763834170dda77ea25799dba403d6cbd513600f Mon Sep 17 00:00:00 2001
From: Rawan Khalid <145160003+Rawan10101@users.noreply.github.com>
Date: Sat, 28 Feb 2026 14:17:46 +0200
Subject: [PATCH] fix(cmake): use host nlua0 binary when cross-compiling #38089

Problem:
When cross-compiling, `$<TARGET_FILE:nlua0>` resolves to the target
binary, which cannot run on the host machine during the build process.

Solution:
Allow passing a host native nlua0 binary via
`-DNLUA0_HOST_PRG=/path/to/nlua0` when cross-compiling, so code
generation can run correctly on the host.
---
 src/nvim/CMakeLists.txt | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/nvim/CMakeLists.txt b/src/nvim/CMakeLists.txt
index 132a87be02..711707302d 100644
--- a/src/nvim/CMakeLists.txt
+++ b/src/nvim/CMakeLists.txt
@@ -522,8 +522,13 @@ add_custom_command(
     "${NVIM_VERSION_DEF_H}"
   DEPENDS "${PROJECT_BINARY_DIR}/cmake.config/auto/versiondef-$<CONFIG>.h")
 
-set(LUA_GEN ${LUA_GEN_PRG} ${GENERATOR_PRELOAD} ${PROJECT_SOURCE_DIR} $<TARGET_FILE:nlua0> ${PROJECT_BINARY_DIR})
-set(LUA_GEN_DEPS ${GENERATOR_PRELOAD} $<TARGET_FILE:nlua0>)
+if(CMAKE_CROSSCOMPILING AND NLUA0_HOST_PRG)
+  set(LUA_GEN ${LUA_GEN_PRG} ${GENERATOR_PRELOAD} ${PROJECT_SOURCE_DIR} ${NLUA0_HOST_PRG} ${PROJECT_BINARY_DIR})
+  set(LUA_GEN_DEPS ${GENERATOR_PRELOAD} ${NLUA0_HOST_PRG})
+else()
+  set(LUA_GEN ${LUA_GEN_PRG} ${GENERATOR_PRELOAD} ${PROJECT_SOURCE_DIR} $<TARGET_FILE:nlua0> ${PROJECT_BINARY_DIR})
+  set(LUA_GEN_DEPS ${GENERATOR_PRELOAD} $<TARGET_FILE:nlua0>)
+endif()
 
 # Like LUA_GEN but includes also vim.fn, vim.api, vim.uv, etc
 set(NVIM_LUA $<TARGET_FILE:nvim_bin> -u NONE -l ${NVIM_LUA_PRELOAD} ${PROJECT_SOURCE_DIR})
@@ -1024,4 +1029,4 @@ add_target(lintdocurls
   COMMAND ${NVIM_LUA} scripts/lintdoc.lua true
   DEPENDS ${DOCFILES}
   CUSTOM_COMMAND_ARGS USES_TERMINAL)
-add_dependencies(lintdocurls nvim)
+add_dependencies(lintdocurls nvim)
\ No newline at end of file