[Crash-utility] [PATCH 04/11] build: don't build the unused libctf and libbacktrace libraries

Kernel debugging only needs DWARF type information, so the CTF debug info library is not useful for crash. libbacktrace is only used by gdb to print a backtrace after a fatal signal, which is not needed for the embedded gdb. Pass --disable-libctf and --disable-libbacktrace to drop both libraries (19 and 33 sources respectively) and the gdb code which links them. Note that gdb, bfd and opcodes already default to building only the selected target's support, so --enable-targets is deliberately not used. Assisted-by: LLM Signed-off-by: Dave Young <yangrr.2009(a)tsinghua.org.cn&gt; --- Makefile | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 2c7573d1c8a9..71d4be4459b1 100644 --- a/Makefile +++ b/Makefile @@ -318,6 +318,11 @@ all: make_configure @$(MAKE) gdb_merge # @$(MAKE) extensions +# +# The embedded gdb is built for the selected target only -- gdb, bfd and +# opcodes already default to that -- without the full-screen TUI and +# without the libctf and libbacktrace libraries, none of which crash uses. +# gdb_merge: force @if [ ! -f ${GDB}/README ]; then \ $(MAKE) gdb_unzip; fi @@ -327,7 +332,7 @@ gdb_merge: force @if [ ! -f ${GDB}/config.status ]; then \ (cd ${GDB}; ./configure ${GDB_CONF_FLAGS} --with-separate-debug-dir=/usr/lib/debug \ --with-bugurl="" --with-expat=no --with-python=no --disable-sim \ - --disable-tui; \ + --disable-tui --disable-libctf --disable-libbacktrace; \ $(MAKE) CRASH_TARGET=${TARGET}; echo ${TARGET} > crash.target) \ else $(MAKE) rebuild; fi @if [ ! -f ${PROGRAM} ]; then \ -- 2.51.1