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Daniel Bristot de Oliveira 02afaeb6c5 tools/rtla: Fix Makefile compiler options for clang 
commit bc4cbc9d26 upstream.

The following errors are showing up when compiling rtla with clang:

 $ make HOSTCC=clang CC=clang LLVM_IAS=1
 [...]

  clang -O -g -DVERSION=\"6.8.0-rc1\" -flto=auto -ffat-lto-objects
	-fexceptions -fstack-protector-strong
	-fasynchronous-unwind-tables -fstack-clash-protection  -Wall
	-Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
	-Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized
	$(pkg-config --cflags libtracefs)    -c -o src/utils.o src/utils.c

  clang: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
  warning: unknown warning option '-Wno-maybe-uninitialized'; did you mean '-Wno-uninitialized'? [-Wunknown-warning-option]
  1 warning generated.

  clang -o rtla -ggdb  src/osnoise.o src/osnoise_hist.o src/osnoise_top.o
  src/rtla.o src/timerlat_aa.o src/timerlat.o src/timerlat_hist.o
  src/timerlat_top.o src/timerlat_u.o src/trace.o src/utils.o $(pkg-config --libs libtracefs)

  src/osnoise.o: file not recognized: file format not recognized
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  make: *** [Makefile:110: rtla] Error 1

Solve these issues by:
  - removing -ffat-lto-objects and -Wno-maybe-uninitialized if using clang
  - informing the linker about -flto=auto

Link: https://lore.kernel.org/linux-trace-kernel/567ac1b94effc228ce9a0225b9df7232a9b35b55.1707217097.git.bristot@kernel.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Fixes: 1a7b22ab15 ("tools/rtla: Build with EXTRA_{C,LD}FLAGS")
Suggested-by: Donald Zickus <dzickus@redhat.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-02-23 09:25:15 +01:00
..
accounting delayacct: track delays from IRQ/SOFTIRQ 2023-04-18 16:39:34 -07:00
arch work around gcc bugs with 'asm goto' with outputs 2024-02-23 09:24:47 +01:00
bootconfig bootconfig: Fix testcase to increase max node 2023-03-22 01:00:28 +09:00
bpf bpftool: Align output skeleton ELF code 2024-01-10 17:16:54 +01:00
build perf cs-etm: Bump minimum OpenCSD version to ensure a bugfix is present 2024-02-05 20:14:31 +00:00
certs tools/certs: Add print-cert-tbs-hash.sh 2022-05-23 18:47:49 +03:00
cgroup iocost_monitor: improve it by adding iocg wait_ms 2023-08-08 15:43:03 -06:00
counter tools/counter: Makefile: Replace rmdir by rm to avoid make,clean failure 2023-07-24 10:29:52 -04:00
crypto/ccp crypto: ccp - Fix some unfused tests 2023-11-20 11:59:18 +01:00
debugging tools: Add new "test" taint to kernel-chktaint 2022-09-07 14:51:12 -06:00
edid tools/edid: Move EDID data sets from Documentation/ 2020-02-19 04:10:32 -07:00
firewire treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
firmware Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
gpio tools: gpio: fix debounce_period_us output of lsgpio 2023-05-11 10:56:24 +02:00
hv hv/hv_kvp_daemon: Some small fixes for handling NM keyfiles 2023-12-03 07:33:02 +01:00
iio tools: iio: iio_generic_buffer ensure alignment 2023-11-20 11:59:26 +01:00
include work around gcc bugs with 'asm goto' with outputs 2024-02-23 09:24:47 +01:00
kvm/kvm_stat tools/kvm_stat: use canonical ftrace path 2023-03-29 06:52:08 -04:00
laptop change email address for Pali Rohár 2020-04-10 15:36:22 -07:00
leds .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
lib libsubcmd: Fix memory leak in uniq() 2024-02-05 20:14:32 +00:00
memory-model LKMM scripting updates for v6.4 2023-04-24 12:02:25 -07:00
mm tools/mm: fix undefined reference to pthread_once 2023-09-05 10:13:45 -07:00
net/ynl netlink: specs: devlink: fix reply command values 2023-10-13 17:27:27 -07:00
objtool cred: get rid of CONFIG_DEBUG_CREDENTIALS 2023-12-20 17:01:51 +01:00
pci kbuild: replace $(if A,A,B) with $(or A,B) 2022-02-15 12:25:56 +09:00
pcmcia .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
perf perf evlist: Fix evlist__new_default() for > 1 core PMU 2024-02-16 19:10:42 +01:00
power PM: tools: Fix sleepgraph syntax error 2023-12-03 07:33:04 +01:00
rcu tools: rcu: Add usage function and check for argument 2023-03-11 18:10:17 -08:00
scripts tools build: Add 3-component logical version comparators 2023-08-03 16:59:40 -03:00
spi spi: spidev_test Add three missing spi mode bits 2023-05-30 15:20:12 +01:00
testing selftests: mptcp: add mptcp_lib_kill_wait 2024-02-23 09:25:00 +01:00
thermal tools/thermal: Fix possible path truncations 2022-08-03 19:28:46 +02:00
time treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
tracing tools/rtla: Fix Makefile compiler options for clang 2024-02-23 09:25:15 +01:00
usb usbip: Use _FORTIFY_SOURCE=2 instead of (implicitly) =1 2023-05-29 15:11:30 +01:00
verification tools/rv: Fix Makefile compiler options for clang 2024-02-23 09:25:14 +01:00
virtio tools/virtio: Add dma sync api for virtio test 2023-10-16 05:32:23 -04:00
wmi treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
workqueue workqueue: Implement non-strict affinity scope for unbound workqueues 2023-08-07 15:57:25 -10:00
Makefile tools/Makefile: do missed s/vm/mm/ 2023-04-18 14:22:12 -07:00