[Lldb-commits] [lldb] [lldb][Windows] Fix ECHO_TO_FILE/ECHO_APPEND_FILE (PR #202612)

[Charles Zablit via lldb-commits]

https://github.com/charles-zablit created https://github.com/llvm/llvm-project/pull/202612

The Windows recipes for these macros were `printf "%s\n" $(1)`. The callers wrap content in single quotes (for the POSIX printf), but the test recipes run under `cmd.exe` on Windows, which keeps the single quotes literal and word-splits on spaces, and the bundled `printf` additionally mangles backslashes and spaces. The result is garbage generated files (e.g. a modulemap whose first line is `'module`, or a truncated SDK path from a "Program Files" directory).

Write the file with cmd's `echo` after stripping the callers' single quotes. `echo` runs in the recipe shell, so unlike GNU make's `$(file ...)` it still works after a preceding `MKDIR_P` in the same recipe.

>From f1622a42b94341cf2f188408355ef7bc5cdf0d7b Mon Sep 17 00:00:00 2001
From: Charles Zablit <c_zablit at apple.com>
Date: Tue, 9 Jun 2026 14:37:24 +0100
Subject: [PATCH] [lldb][Windows] Fix ECHO_TO_FILE/ECHO_APPEND_FILE

---
 lldb/packages/Python/lldbsuite/test/make/Makefile.rules | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lldb/packages/Python/lldbsuite/test/make/Makefile.rules b/lldb/packages/Python/lldbsuite/test/make/Makefile.rules
index 44aa91ef7b6fc..68067451d1d30 100644
--- a/lldb/packages/Python/lldbsuite/test/make/Makefile.rules
+++ b/lldb/packages/Python/lldbsuite/test/make/Makefile.rules
@@ -64,8 +64,8 @@ else
 	# valid when transferred to a remote device.
 	LN_SF = ln -sf $(patsubst $(dir $(2))%,%,$(1)) $(2)
 	ECHO = echo $(1);
-	ECHO_TO_FILE = printf '%s\n' $(1) > "$(2)"
-	ECHO_APPEND_FILE = printf '%s\n' $(1) >> "$(2)"
+	ECHO_TO_FILE = echo $(subst ',,$(1))> "$(subst /,\,$(2))"
+	ECHO_APPEND_FILE = echo $(subst ',,$(1))>> "$(subst /,\,$(2))"
 endif
 
 # Suppress built-in suffix rules. We explicitly define rules for %.o.