[PATCH v2 3/4] perf version: Print the compiled-in status of libraries

Jin Yao
2018-03-28T07:03:00Z

This patch checks the values passed by CFLAGS (-DHAVE_XXX) and then
print the status of libraries.

For example, if HAVE_DWARF_SUPPORT is defined, that means the
library "dwarf" is compiled-in. The patch will print the status
"on" for this library otherwise print the status "OFF".

v2:
---
1. Use IS_BUILTIN macro to replace #ifdef/#endif block.

2. Print color for on/OFF.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
---
tools/perf/builtin-version.c | 68 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 68 insertions(+)

diff --git a/tools/perf/builtin-version.c b/tools/perf/builtin-version.c
index 37019c5..6e2e486 100644
--- a/tools/perf/builtin-version.c
+++ b/tools/perf/builtin-version.c
@@ -1,11 +1,79 @@
// SPDX-License-Identifier: GPL-2.0
#include "builtin.h"
#include "perf.h"
+#include "color.h"
#include <linux/compiler.h>
+#include <tools/config.h>
#include <stdio.h>
+#include <string.h>
+
+int version_verbose;
+
+static void on_off_print(const char *status)
+{
+ printf("[ ");
+
+ if (!strcmp(status, "OFF"))
+ color_fprintf(stdout, PERF_COLOR_RED, "%-3s", status);
+ else
+ color_fprintf(stdout, PERF_COLOR_GREEN, "%-3s", status);
+
+ printf(" ]");
+}
+
+static void status_print(const char *name, const char *status)
+{
+ printf("%22s: ", name);
+ on_off_print(status);
+ printf("\n");
+}
+
+#define STATUS(__d, __m) \
+do { \
+ if (IS_BUILTIN(__d)) \
+ status_print(#__m, "on"); \
+ else \
+ status_print(#__m, "OFF"); \
+} while (0)
+
+static void library_status(void)
+{
+ STATUS(HAVE_DWARF_SUPPORT, dwarf);
+ STATUS(HAVE_DWARF_GETLOCATIONS, dwarf_getlocations);
+ STATUS(HAVE_GLIBC_SUPPORT, glibc);
+ STATUS(HAVE_GTK2_SUPPORT, gtk2);
+ STATUS(HAVE_LIBAUDIT_SUPPORT, libaudit);
+ STATUS(HAVE_LIBBFD_SUPPORT, libbfd);
+ STATUS(HAVE_LIBELF_SUPPORT, libelf);
+ STATUS(HAVE_LIBNUMA_SUPPORT, libnuma);
+ STATUS(HAVE_LIBNUMA_SUPPORT, numa_num_possible_cpus);
+ STATUS(HAVE_LIBPERL_SUPPORT, libperl);
+ STATUS(HAVE_LIBPYTHON_SUPPORT, libpython);
+ STATUS(HAVE_SLANG_SUPPORT, libslang);
+ STATUS(HAVE_LIBCRYPTO_SUPPORT, libcrypto);
+ STATUS(HAVE_LIBUNWIND_SUPPORT, libunwind);
+ STATUS(HAVE_DWARF_SUPPORT, libdw-dwarf-unwind);
+ STATUS(HAVE_ZLIB_SUPPORT, zlib);
+ STATUS(HAVE_LZMA_SUPPORT, lzma);
+ STATUS(HAVE_AUXTRACE_SUPPORT, get_cpuid);
+ STATUS(HAVE_LIBBPF_SUPPORT, bpf);
+
+ on_off_print("on");
+ printf(": library is compiled-in\n");
+
+ on_off_print("OFF");
+ printf(": library is disabled in make configuration\n");
+ printf(" OR library is not installed in build environment\n");
+}

int cmd_version(int argc __maybe_unused, const char **argv __maybe_unused)
{
printf("perf version %s\n", perf_version_string);
+
+ if ((argc > 1 && !strcmp(argv[1], "--build-options")) ||
+ (version_verbose == 1)) {
+ library_status();
+ }
+
return 0;
}
--
2.7.4