[Lldb-commits] [lldb] [lldb/cmake] create staging directory for headers (PR #173427)

[Jan Palus via lldb-commits]

https://github.com/jpalus created https://github.com/llvm/llvm-project/pull/173427

copy_command can either become `cmake -E copy`, which handles target directory creation automatically, or `unifdef >` which fails without explicitly created directory and consequently so does version-header-fix.py later on.

>From f0dfe1c8301ff9d43dec4be3dc926b7901d06495 Mon Sep 17 00:00:00 2001
From: Jan Palus <jpalus at fastmail.com>
Date: Wed, 24 Dec 2025 00:28:35 +0100
Subject: [PATCH] [lldb/cmake] create staging directory for headers

copy_command can either become `cmake -E copy`, which handles target
directory creation automatically, or `unifdef >` which fails without
explicitly created directory and consequently so does
version-header-fix.py later on.
---
 lldb/source/API/CMakeLists.txt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lldb/source/API/CMakeLists.txt b/lldb/source/API/CMakeLists.txt
index ac47580d60840..e27f90f2e873d 100644
--- a/lldb/source/API/CMakeLists.txt
+++ b/lldb/source/API/CMakeLists.txt
@@ -303,6 +303,11 @@ list(REMOVE_ITEM root_public_headers ${root_private_headers})
 # Skip the initial copy of lldb-defines.h. The fixed version is generated at build time.
 list(REMOVE_ITEM root_public_headers ${LLDB_SOURCE_DIR}/include/lldb/lldb-defines.h)
 
+add_custom_command(
+  OUTPUT ${lldb_header_staging_dir}
+  COMMAND ${CMAKE_COMMAND} -E make_directory ${lldb_header_staging_dir}
+  COMMENT "LLDB headers: create staging directory for LLDB headers")
+
 find_program(unifdef_EXECUTABLE unifdef)
 
 add_custom_target(liblldb-header-staging)
@@ -333,7 +338,7 @@ foreach(header
   add_dependencies(liblldb-stage-header-${basename} lldb-sbapi-dwarf-enums)
   add_dependencies(liblldb-header-staging liblldb-stage-header-${basename})
   add_custom_command(
-    DEPENDS ${header} OUTPUT ${staged_header}
+    DEPENDS ${header} ${lldb_header_staging_dir} OUTPUT ${staged_header}
     COMMAND ${copy_command}
     COMMENT "LLDB headers: stage LLDB headers in include directory")