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perf tools: Add missing open_memstream() prototype for systems lacking it
There are systems such as the Android NDK API level 24 has the open_memstream() function but doesn't provide a prototype, adding noise to the build: builtin-timechart.c: In function 'cat_backtrace': builtin-timechart.c:486:2: warning: implicit declaration of function 'open_memstream' [-Wimplicit-function-declaration] FILE *f = open_memstream(&p, &p_len); ^ builtin-timechart.c:486:2: warning: nested extern declaration of 'open_memstream' [-Wnested-externs] builtin-timechart.c:486:12: warning: initialization makes pointer from integer without a cast FILE *f = open_memstream(&p, &p_len); ^ Define a LACKS_OPEN_MEMSTREAM_PROTOTYPE define so that code needing that can get a prototype. Checked in the bionic git repo to be available since level 23: https://android.googlesource.com/platform/bionic/+/master/libc/include/stdio.h#241 FILE* open_memstream(char** __ptr, size_t* __size_ptr) __INTRODUCED_IN(23); Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-343ashae97e5bq6vizusyfno@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -295,6 +295,7 @@ ifndef NO_BIONIC
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ifeq ($(feature-bionic), 1)
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BIONIC := 1
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CFLAGS += -DLACKS_SIGQUEUE_PROTOTYPE
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CFLAGS += -DLACKS_OPEN_MEMSTREAM_PROTOTYPE
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EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
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EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
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endif
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@ -43,6 +43,10 @@
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#include "util/data.h"
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#include "util/debug.h"
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#ifdef LACKS_OPEN_MEMSTREAM_PROTOTYPE
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FILE *open_memstream(char **ptr, size_t *sizeloc);
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#endif
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#define SUPPORT_OLD_POWER_EVENTS 1
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#define PWR_EVENT_EXIT -1
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