[PATCH 3/4] Makefile: reintroduce REFTABLE_OBJS

["SZEDER Gábor" <szeder.dev@gmail.com>]

Object files under "reftable/" used to be listed in the REFTABLE_OBJS
Makefile variable so we could build a static library from them.  This
static library was removed in f3b4c89d59 (make: delete REFTABLE_LIB,
add reftable to LIB_OBJS, 2025-10-02), along with filling
REFTALBE_OBJS with object files.

However, the reftable source files are kind of special, because the
reftable implementation is supposed to be easily includable in other
projects.  Therefore, the reftable source files don't include
"git-compat-util.h", with the sole exception of the purposefully
project-specific "reftable/system.c".  Consequently, they shouldn't be
compiled with our precompiled header, as it does include
"git-compat-util.h".

Resurrect listing object files under "reftable/" in REFTABLE_OBJS (but
not the static library), so in the next commit we'll be able to easily
filter them out and keep building them the old way, without the
precompiled header.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
---
 Makefile                            | 32 ++++++++++++++++-------------
 contrib/buildsystems/CMakeLists.txt |  4 ++++
 2 files changed, 22 insertions(+), 14 deletions(-)

diff --git a/Makefile b/Makefile
index 7d9ac15c74..2c4d6f4d4a 100644
--- a/Makefile
+++ b/Makefile
@@ -707,6 +707,7 @@ OBJECTS =
 OTHER_PROGRAMS =
 PROGRAM_OBJS =
 PROGRAMS =
+REFTABLE_OBJS =
 RUST_SOURCES =
 EXCLUDED_PROGRAMS =
 SCRIPT_PERL =
@@ -1284,20 +1285,6 @@ LIB_OBJS += refs/iterator.o
 LIB_OBJS += refs/packed-backend.o
 LIB_OBJS += refs/ref-cache.o
 LIB_OBJS += refspec.o
-LIB_OBJS += reftable/basics.o
-LIB_OBJS += reftable/block.o
-LIB_OBJS += reftable/blocksource.o
-LIB_OBJS += reftable/error.o
-LIB_OBJS += reftable/fsck.o
-LIB_OBJS += reftable/iter.o
-LIB_OBJS += reftable/merged.o
-LIB_OBJS += reftable/pq.o
-LIB_OBJS += reftable/record.o
-LIB_OBJS += reftable/stack.o
-LIB_OBJS += reftable/system.o
-LIB_OBJS += reftable/table.o
-LIB_OBJS += reftable/tree.o
-LIB_OBJS += reftable/writer.o
 LIB_OBJS += remote.o
 LIB_OBJS += repack.o
 LIB_OBJS += repack-cruft.o
@@ -1386,6 +1373,23 @@ LIB_OBJS += xdiff/xpatience.o
 LIB_OBJS += xdiff/xprepare.o
 LIB_OBJS += xdiff/xutils.o
 
+REFTABLE_OBJS += reftable/basics.o
+REFTABLE_OBJS += reftable/block.o
+REFTABLE_OBJS += reftable/blocksource.o
+REFTABLE_OBJS += reftable/error.o
+REFTABLE_OBJS += reftable/fsck.o
+REFTABLE_OBJS += reftable/iter.o
+REFTABLE_OBJS += reftable/merged.o
+REFTABLE_OBJS += reftable/pq.o
+REFTABLE_OBJS += reftable/record.o
+REFTABLE_OBJS += reftable/stack.o
+REFTABLE_OBJS += reftable/system.o
+REFTABLE_OBJS += reftable/table.o
+REFTABLE_OBJS += reftable/tree.o
+REFTABLE_OBJS += reftable/writer.o
+
+LIB_OBJS += $(REFTABLE_OBJS)
+
 BUILTIN_OBJS += builtin/add.o
 BUILTIN_OBJS += builtin/am.o
 BUILTIN_OBJS += builtin/annotate.o
diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
index 241da0d43a..462c1eb5ec 100644
--- a/contrib/buildsystems/CMakeLists.txt
+++ b/contrib/buildsystems/CMakeLists.txt
@@ -668,6 +668,10 @@ include_directories(${CMAKE_BINARY_DIR})
 #libgit
 parse_makefile_for_sources(libgit_SOURCES ${CMAKE_SOURCE_DIR}/Makefile "LIB_OBJS")
 
+#reftable
+parse_makefile_for_sources(reftable_SOURCES ${CMAKE_SOURCE_DIR}/Makefile "REFTABLE_OBJS")
+list(APPEND libgit_SOURCES ${reftable_SOURCES})
+
 list(TRANSFORM libgit_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/")
 list(TRANSFORM compat_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/")
 
-- 
2.55.0.1193.g1b994e35de