From 207af96f4eb3220534ea06c2e107517372246544 Mon Sep 17 00:00:00 2001
From: Robin Haberkorn <rhaberkorn@fmsbw.de>
Date: Wed, 23 Sep 2026 00:24:23 +0200
Subject: generate compile_flags.txt

This can be read by clangd as an alternative to compile_commands.json
(which would be trickier to generate with Autotools).
However, since this is generated in the build directory, it may not always
be picked up automatically -- a build/ directory should work,
but otherwise you might have to pass --compile-commands-dir to clangd.
---
 src/Makefile.am | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/Makefile.am')

diff --git a/src/Makefile.am b/src/Makefile.am
index fa6c0e4..eb532e3 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -12,6 +12,7 @@ include $(top_srcdir)/bootstrap.am
 include $(top_srcdir)/contrib/scintilla.am
 
 # FIXME: Common flags should be in configure.ac
+# See also compile_flags.txt.
 AM_CFLAGS = -std=gnu11 -Wall -Wno-initializer-overrides -Wno-unused-value
 AM_CPPFLAGS += -I$(top_srcdir)/contrib/rb3ptr -I$(top_srcdir)/contrib/terex \
                -I$(top_srcdir)/contrib/sj.h
@@ -22,7 +23,12 @@ if STATIC_EXECUTABLES
 AM_LDFLAGS += -all-static
 endif
 
-BUILT_SOURCES =
+BUILT_SOURCES = compile_flags.txt
+
+# for clangd
+compile_flags.txt : GNUmakefile
+	printf '%s\n' $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+	              $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) >$@
 
 dist_noinst_SCRIPTS = symbols-extract.tes
 
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