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authorIngo Molnar <mingo@kernel.org>2017-02-16 20:53:13 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-16 20:53:13 +0100
commit0c8967c9df230d2c4dde6649f410b62e01806c22 (patch)
tree7a0909ee1d9551640aa0427cdad610d8d1dacd4f
parent277d6f1dcae09aed63cd4c7900a280b0e18cf2ca (diff)
parent34a0548f01626b01c9e98d9627812c3c9f6b6f7d (diff)
downloadlinux-0c8967c9df230d2c4dde6649f410b62e01806c22.tar.bz2
Merge tag 'perf-core-for-mingo-4.11-20170215' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core clang fixes from Arnaldo Carvalho de Melo: Changes to make tools/{perf,lib/{bpf,traceevent,api}} build with CC=clang, to, for instance, take advantage of warnings (Arnaldo Carvalho de Melo): - Conditionally request some warning options not available on clang - Set the maximum optimization level to -O3 when using CC=clang, leave the previous setting of -O6 otherwise. - Make it an error to pass a signed value to OPTION_UINTEGER, so that we can remove abs(unsigned int) calls in 'perf bench futex'. - Make sure dprintf() is not defined before using that name in 'perf bench numa' - Avoid using field after variable sized type, its a GNU extension, use equivalent code. - Fix some bugs where some variables could be used unitialized, something not caught by gcc. - Fix some spots where we were testing struct->array[] members against NULL, it will always evaluate to 'true'. - Add missing parse_events_error() prototype in the bison file. There are still one problem when trying to build the python support, but this are the 'size' outputs for 'make -C tools/perf NO_LIBPYTHON' for gcc and clang builds: DW_AT_producer: clang version 4.0.0 (http://llvm.org/git/clang.git f5be8ba13adc4ba1011a7ccd60c844bd60427c1c) (ht $ size ~/bin/perf text data bss dec hex filename 3447514 831320 23901696 28180530 1ae0032 /home/acme/bin/perf DW_AT_producer: GNU C99 6.3.1 20161221 (Red Hat 6.3.1-1) -mtune=generic -march=x86-64 -ggdb3 -O6 -std=gnu99 +-fno-omit-frame-pointer -funwind-tables -fstack-protector-all $ size ~/bin/perf text data bss dec hex filename 3671662 836480 23902752 28410894 1b1840e /home/acme/bin/perf Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--tools/lib/api/Makefile8
-rw-r--r--tools/lib/subcmd/Makefile8
-rw-r--r--tools/lib/subcmd/parse-options.c4
-rw-r--r--tools/perf/Makefile.config4
-rw-r--r--tools/perf/bench/futex-hash.c4
-rw-r--r--tools/perf/bench/futex-lock-pi.c3
-rw-r--r--tools/perf/bench/futex-requeue.c2
-rw-r--r--tools/perf/bench/futex-wake-parallel.c4
-rw-r--r--tools/perf/bench/futex-wake.c3
-rw-r--r--tools/perf/bench/futex.h4
-rw-r--r--tools/perf/bench/numa.c1
-rw-r--r--tools/perf/builtin-record.c17
-rw-r--r--tools/perf/tests/parse-no-sample-id-all.c19
-rw-r--r--tools/perf/util/evsel.c62
-rw-r--r--tools/perf/util/intel-pt-decoder/Build6
-rw-r--r--tools/perf/util/machine.c4
-rw-r--r--tools/perf/util/parse-events.c15
-rw-r--r--tools/perf/util/parse-events.y2
-rw-r--r--tools/perf/util/pmu.c4
-rw-r--r--tools/perf/util/probe-event.c2
-rw-r--r--tools/perf/util/session.c2
-rw-r--r--tools/scripts/Makefile.include5
22 files changed, 91 insertions, 92 deletions
diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile
index adba83b325d5..eb6e0b36bfc1 100644
--- a/tools/lib/api/Makefile
+++ b/tools/lib/api/Makefile
@@ -17,7 +17,13 @@ MAKEFLAGS += --no-print-directory
LIBFILE = $(OUTPUT)libapi.a
CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
-CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -O6 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC
+CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC
+
+ifeq ($(CC), clang)
+ CFLAGS += -O3
+else
+ CFLAGS += -O6
+endif
# Treat warnings as errors unless directed not to
ifneq ($(WERROR),0)
diff --git a/tools/lib/subcmd/Makefile b/tools/lib/subcmd/Makefile
index 3f8cc44a0dbd..3d1c3b5b5150 100644
--- a/tools/lib/subcmd/Makefile
+++ b/tools/lib/subcmd/Makefile
@@ -19,7 +19,13 @@ MAKEFLAGS += --no-print-directory
LIBFILE = $(OUTPUT)libsubcmd.a
CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
-CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -O6 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC
+CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC
+
+ifeq ($(CC), clang)
+ CFLAGS += -O3
+else
+ CFLAGS += -O6
+endif
# Treat warnings as errors unless directed not to
ifneq ($(WERROR),0)
diff --git a/tools/lib/subcmd/parse-options.c b/tools/lib/subcmd/parse-options.c
index 8aad81151d50..6bc24025d054 100644
--- a/tools/lib/subcmd/parse-options.c
+++ b/tools/lib/subcmd/parse-options.c
@@ -270,6 +270,8 @@ static int get_value(struct parse_opt_ctx_t *p,
}
if (get_arg(p, opt, flags, &arg))
return -1;
+ if (arg[0] == '-')
+ return opterror(opt, "expects an unsigned numerical value", flags);
*(unsigned int *)opt->value = strtol(arg, (char **)&s, 10);
if (*s)
return opterror(opt, "expects a numerical value", flags);
@@ -302,6 +304,8 @@ static int get_value(struct parse_opt_ctx_t *p,
}
if (get_arg(p, opt, flags, &arg))
return -1;
+ if (arg[0] == '-')
+ return opterror(opt, "expects an unsigned numerical value", flags);
*(u64 *)opt->value = strtoull(arg, (char **)&s, 10);
if (*s)
return opterror(opt, "expects a numerical value", flags);
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 03cf947755b9..2b941efadb04 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -144,8 +144,12 @@ ifndef DEBUG
endif
ifeq ($(DEBUG),0)
+ifeq ($(CC), clang)
+ CFLAGS += -O3
+else
CFLAGS += -O6
endif
+endif
ifdef PARSER_DEBUG
PARSER_DEBUG_BISON := -t
diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c
index bfbb6b5f609c..da04b8c5568a 100644
--- a/tools/perf/bench/futex-hash.c
+++ b/tools/perf/bench/futex-hash.c
@@ -130,8 +130,6 @@ int bench_futex_hash(int argc, const char **argv,
}
ncpus = sysconf(_SC_NPROCESSORS_ONLN);
- nsecs = futexbench_sanitize_numeric(nsecs);
- nfutexes = futexbench_sanitize_numeric(nfutexes);
sigfillset(&act.sa_mask);
act.sa_sigaction = toggle_done;
@@ -139,8 +137,6 @@ int bench_futex_hash(int argc, const char **argv,
if (!nthreads) /* default to the number of CPUs */
nthreads = ncpus;
- else
- nthreads = futexbench_sanitize_numeric(nthreads);
worker = calloc(nthreads, sizeof(*worker));
if (!worker)
diff --git a/tools/perf/bench/futex-lock-pi.c b/tools/perf/bench/futex-lock-pi.c
index 6d9d6c40a916..91877777ec6e 100644
--- a/tools/perf/bench/futex-lock-pi.c
+++ b/tools/perf/bench/futex-lock-pi.c
@@ -152,7 +152,6 @@ int bench_futex_lock_pi(int argc, const char **argv,
goto err;
ncpus = sysconf(_SC_NPROCESSORS_ONLN);
- nsecs = futexbench_sanitize_numeric(nsecs);
sigfillset(&act.sa_mask);
act.sa_sigaction = toggle_done;
@@ -160,8 +159,6 @@ int bench_futex_lock_pi(int argc, const char **argv,
if (!nthreads)
nthreads = ncpus;
- else
- nthreads = futexbench_sanitize_numeric(nthreads);
worker = calloc(nthreads, sizeof(*worker));
if (!worker)
diff --git a/tools/perf/bench/futex-requeue.c b/tools/perf/bench/futex-requeue.c
index fd4ee95b689a..2b9705a8734c 100644
--- a/tools/perf/bench/futex-requeue.c
+++ b/tools/perf/bench/futex-requeue.c
@@ -128,8 +128,6 @@ int bench_futex_requeue(int argc, const char **argv,
if (!nthreads)
nthreads = ncpus;
- else
- nthreads = futexbench_sanitize_numeric(nthreads);
worker = calloc(nthreads, sizeof(*worker));
if (!worker)
diff --git a/tools/perf/bench/futex-wake-parallel.c b/tools/perf/bench/futex-wake-parallel.c
index beaa6c142477..2c8fa67ad537 100644
--- a/tools/perf/bench/futex-wake-parallel.c
+++ b/tools/perf/bench/futex-wake-parallel.c
@@ -217,12 +217,8 @@ int bench_futex_wake_parallel(int argc, const char **argv,
sigaction(SIGINT, &act, NULL);
ncpus = sysconf(_SC_NPROCESSORS_ONLN);
- nwaking_threads = futexbench_sanitize_numeric(nwaking_threads);
-
if (!nblocked_threads)
nblocked_threads = ncpus;
- else
- nblocked_threads = futexbench_sanitize_numeric(nblocked_threads);
/* some sanity checks */
if (nwaking_threads > nblocked_threads || !nwaking_threads)
diff --git a/tools/perf/bench/futex-wake.c b/tools/perf/bench/futex-wake.c
index 46efcb98b5a4..e246b1b8388a 100644
--- a/tools/perf/bench/futex-wake.c
+++ b/tools/perf/bench/futex-wake.c
@@ -129,7 +129,6 @@ int bench_futex_wake(int argc, const char **argv,
}
ncpus = sysconf(_SC_NPROCESSORS_ONLN);
- nwakes = futexbench_sanitize_numeric(nwakes);
sigfillset(&act.sa_mask);
act.sa_sigaction = toggle_done;
@@ -137,8 +136,6 @@ int bench_futex_wake(int argc, const char **argv,
if (!nthreads)
nthreads = ncpus;
- else
- nthreads = futexbench_sanitize_numeric(nthreads);
worker = calloc(nthreads, sizeof(*worker));
if (!worker)
diff --git a/tools/perf/bench/futex.h b/tools/perf/bench/futex.h
index ba7c735c0c62..b2e06d1190d0 100644
--- a/tools/perf/bench/futex.h
+++ b/tools/perf/bench/futex.h
@@ -7,7 +7,6 @@
#ifndef _FUTEX_H
#define _FUTEX_H
-#include <stdlib.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <sys/types.h>
@@ -100,7 +99,4 @@ static inline int pthread_attr_setaffinity_np(pthread_attr_t *attr,
}
#endif
-/* User input sanitation */
-#define futexbench_sanitize_numeric(__n) abs((__n))
-
#endif /* _FUTEX_H */
diff --git a/tools/perf/bench/numa.c b/tools/perf/bench/numa.c
index 9e5a02d6b9a9..3083fc36282b 100644
--- a/tools/perf/bench/numa.c
+++ b/tools/perf/bench/numa.c
@@ -43,6 +43,7 @@
/*
* Debug printf:
*/
+#undef dprintf
#define dprintf(x...) do { if (g && g->p.show_details >= 1) printf(x); } while (0)
struct thread_data {
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 2ddf189968dc..6cd6776052e7 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -655,22 +655,23 @@ record__finish_output(struct record *rec)
static int record__synthesize_workload(struct record *rec, bool tail)
{
- struct {
- struct thread_map map;
- struct thread_map_data map_data;
- } thread_map;
+ int err;
+ struct thread_map *thread_map;
if (rec->opts.tail_synthesize != tail)
return 0;
- thread_map.map.nr = 1;
- thread_map.map.map[0].pid = rec->evlist->workload.pid;
- thread_map.map.map[0].comm = NULL;
- return perf_event__synthesize_thread_map(&rec->tool, &thread_map.map,
+ thread_map = thread_map__new_by_tid(rec->evlist->workload.pid);
+ if (thread_map == NULL)
+ return -1;
+
+ err = perf_event__synthesize_thread_map(&rec->tool, thread_map,
process_synthesized_event,
&rec->session->machines.host,
rec->opts.sample_address,
rec->opts.proc_map_timeout);
+ thread_map__put(thread_map);
+ return err;
}
static int record__synthesize(struct record *rec, bool tail);
diff --git a/tools/perf/tests/parse-no-sample-id-all.c b/tools/perf/tests/parse-no-sample-id-all.c
index 81c6eeaca0f5..65dcf48a92fb 100644
--- a/tools/perf/tests/parse-no-sample-id-all.c
+++ b/tools/perf/tests/parse-no-sample-id-all.c
@@ -50,7 +50,8 @@ static int process_events(union perf_event **events, size_t count)
}
struct test_attr_event {
- struct attr_event attr;
+ struct perf_event_header header;
+ struct perf_event_attr attr;
u64 id;
};
@@ -71,20 +72,16 @@ int test__parse_no_sample_id_all(int subtest __maybe_unused)
int err;
struct test_attr_event event1 = {
- .attr = {
- .header = {
- .type = PERF_RECORD_HEADER_ATTR,
- .size = sizeof(struct test_attr_event),
- },
+ .header = {
+ .type = PERF_RECORD_HEADER_ATTR,
+ .size = sizeof(struct test_attr_event),
},
.id = 1,
};
struct test_attr_event event2 = {
- .attr = {
- .header = {
- .type = PERF_RECORD_HEADER_ATTR,
- .size = sizeof(struct test_attr_event),
- },
+ .header = {
+ .type = PERF_RECORD_HEADER_ATTR,
+ .size = sizeof(struct test_attr_event),
},
.id = 2,
};
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index cd2fb42e5dd4..ac59710b79e0 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1448,8 +1448,8 @@ static bool ignore_missing_thread(struct perf_evsel *evsel,
return true;
}
-static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
- struct thread_map *threads)
+int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
+ struct thread_map *threads)
{
int cpu, thread, nthreads;
unsigned long flags = PERF_FLAG_FD_CLOEXEC;
@@ -1459,6 +1459,30 @@ static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
if (perf_missing_features.write_backward && evsel->attr.write_backward)
return -EINVAL;
+ if (cpus == NULL) {
+ static struct cpu_map *empty_cpu_map;
+
+ if (empty_cpu_map == NULL) {
+ empty_cpu_map = cpu_map__dummy_new();
+ if (empty_cpu_map == NULL)
+ return -ENOMEM;
+ }
+
+ cpus = empty_cpu_map;
+ }
+
+ if (threads == NULL) {
+ static struct thread_map *empty_thread_map;
+
+ if (empty_thread_map == NULL) {
+ empty_thread_map = thread_map__new_by_tid(-1);
+ if (empty_thread_map == NULL)
+ return -ENOMEM;
+ }
+
+ threads = empty_thread_map;
+ }
+
if (evsel->system_wide)
nthreads = 1;
else
@@ -1655,46 +1679,16 @@ void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads)
perf_evsel__free_fd(evsel);
}
-static struct {
- struct cpu_map map;
- int cpus[1];
-} empty_cpu_map = {
- .map.nr = 1,
- .cpus = { -1, },
-};
-
-static struct {
- struct thread_map map;
- int threads[1];
-} empty_thread_map = {
- .map.nr = 1,
- .threads = { -1, },
-};
-
-int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
- struct thread_map *threads)
-{
- if (cpus == NULL) {
- /* Work around old compiler warnings about strict aliasing */
- cpus = &empty_cpu_map.map;
- }
-
- if (threads == NULL)
- threads = &empty_thread_map.map;
-
- return __perf_evsel__open(evsel, cpus, threads);
-}
-
int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
struct cpu_map *cpus)
{
- return __perf_evsel__open(evsel, cpus, &empty_thread_map.map);
+ return perf_evsel__open(evsel, cpus, NULL);
}
int perf_evsel__open_per_thread(struct perf_evsel *evsel,
struct thread_map *threads)
{
- return __perf_evsel__open(evsel, &empty_cpu_map.map, threads);
+ return perf_evsel__open(evsel, NULL, threads);
}
static int perf_evsel__parse_id_sample(const struct perf_evsel *evsel,
diff --git a/tools/perf/util/intel-pt-decoder/Build b/tools/perf/util/intel-pt-decoder/Build
index 9b742ea8bfe8..7aca5d6d7e1f 100644
--- a/tools/perf/util/intel-pt-decoder/Build
+++ b/tools/perf/util/intel-pt-decoder/Build
@@ -23,4 +23,8 @@ $(OUTPUT)util/intel-pt-decoder/intel-pt-insn-decoder.o: util/intel-pt-decoder/in
$(call rule_mkdir)
$(call if_changed_dep,cc_o_c)
-CFLAGS_intel-pt-insn-decoder.o += -I$(OUTPUT)util/intel-pt-decoder -Wno-override-init
+CFLAGS_intel-pt-insn-decoder.o += -I$(OUTPUT)util/intel-pt-decoder
+
+ifneq ($(CC), clang)
+ CFLAGS_intel-pt-insn-decoder.o += -Wno-override-init
+endif
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index a1043cf9b89c..71c9720d4973 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -782,7 +782,7 @@ static u64 machine__get_running_kernel_start(struct machine *machine,
int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
{
- enum map_type type;
+ int type;
u64 start = machine__get_running_kernel_start(machine, NULL);
/* In case of renewal the kernel map, destroy previous one */
@@ -813,7 +813,7 @@ int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
void machine__destroy_kernel_maps(struct machine *machine)
{
- enum map_type type;
+ int type;
for (type = 0; type < MAP__NR_TYPES; ++type) {
struct kmap *kmap;
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 07be0762e53e..281e44af31e2 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -2020,17 +2020,14 @@ static bool is_event_supported(u8 type, unsigned config)
.config = config,
.disabled = 1,
};
- struct {
- struct thread_map map;
- int threads[1];
- } tmap = {
- .map.nr = 1,
- .threads = { 0 },
- };
+ struct thread_map *tmap = thread_map__new_by_tid(0);
+
+ if (tmap == NULL)
+ return false;
evsel = perf_evsel__new(&attr);
if (evsel) {
- open_return = perf_evsel__open(evsel, NULL, &tmap.map);
+ open_return = perf_evsel__open(evsel, NULL, tmap);
ret = open_return >= 0;
if (open_return == -EACCES) {
@@ -2042,7 +2039,7 @@ static bool is_event_supported(u8 type, unsigned config)
*
*/
evsel->attr.exclude_kernel = 1;
- ret = perf_evsel__open(evsel, NULL, &tmap.map) >= 0;
+ ret = perf_evsel__open(evsel, NULL, tmap) >= 0;
}
perf_evsel__delete(evsel);
}
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 3a5196380609..a14b47ab3879 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -17,6 +17,8 @@
#include "parse-events.h"
#include "parse-events-bison.h"
+void parse_events_error(YYLTYPE *loc, void *data, void *scanner, char const *msg);
+
#define ABORT_ON(val) \
do { \
if (val) \
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 82a654dec666..49bfee0e3d9e 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -945,12 +945,12 @@ static int check_info_data(struct perf_pmu_alias *alias,
* define unit, scale and snapshot, fail
* if there's more than one.
*/
- if ((info->unit && alias->unit) ||
+ if ((info->unit && alias->unit[0]) ||
(info->scale && alias->scale) ||
(info->snapshot && alias->snapshot))
return -EINVAL;
- if (alias->unit)
+ if (alias->unit[0])
info->unit = alias->unit;
if (alias->scale)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 2c1bca240597..35f5b7b7715c 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -2061,7 +2061,7 @@ static int find_perf_probe_point_from_map(struct probe_trace_point *tp,
bool is_kprobe)
{
struct symbol *sym = NULL;
- struct map *map;
+ struct map *map = NULL;
u64 addr = tp->address;
int ret = -ENOENT;
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 349c68144e55..4cdbc8f5f14d 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1901,7 +1901,7 @@ int maps__set_kallsyms_ref_reloc_sym(struct map **maps,
const char *symbol_name, u64 addr)
{
char *bracket;
- enum map_type i;
+ int i;
struct ref_reloc_sym *ref;
ref = zalloc(sizeof(struct ref_reloc_sym));
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 19edc1a7a232..621578aa12d6 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -32,7 +32,6 @@ EXTRA_WARNINGS += -Wold-style-definition
EXTRA_WARNINGS += -Wpacked
EXTRA_WARNINGS += -Wredundant-decls
EXTRA_WARNINGS += -Wshadow
-EXTRA_WARNINGS += -Wstrict-aliasing=3
EXTRA_WARNINGS += -Wstrict-prototypes
EXTRA_WARNINGS += -Wswitch-default
EXTRA_WARNINGS += -Wswitch-enum
@@ -40,6 +39,10 @@ EXTRA_WARNINGS += -Wundef
EXTRA_WARNINGS += -Wwrite-strings
EXTRA_WARNINGS += -Wformat
+ifneq ($(CC), clang)
+EXTRA_WARNINGS += -Wstrict-aliasing=3
+endif
+
ifneq ($(findstring $(MAKEFLAGS), w),w)
PRINT_DIR = --no-print-directory
else