[Buildroot] [PATCH v3 8/9] lttng-babeltrace: add debug info support

[Philippe Proulx <eeppeliteloop@gmail.com>]

Since Babeltrace 1.4, there is support for printing debug information
along with compatible traces and event records. Babeltrace needs
elfutils in this case. If elfutils can be built with the current
configuration, the lttng-babeltrace package selects it and builds
with support for debug information. Otherwise the menuconfig shows
a comment which explains why debug information support cannot be
built.

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
---
This is a new patch in v3.

 package/lttng-babeltrace/Config.in           | 17 +++++++++++++++++
 package/lttng-babeltrace/lttng-babeltrace.mk |  7 +++++++
 2 files changed, 24 insertions(+)

diff --git a/package/lttng-babeltrace/Config.in b/package/lttng-babeltrace/Config.in
index 95b635d..55e2143 100644
--- a/package/lttng-babeltrace/Config.in
+++ b/package/lttng-babeltrace/Config.in
@@ -27,6 +27,23 @@ config BR2_PACKAGE_LTTNG_BABELTRACE

 	  http://diamon.org/babeltrace

+if BR2_PACKAGE_LTTNG_BABELTRACE
+
+config BR2_PACKAGE_LTTNG_BABELTRACE_DEBUG_INFO
+	bool
+	default y
+	depends on !BR2_bfin # elfutils
+	depends on !BR2_STATIC_LIBS # elfutils
+	depends on BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC # elfutils
+	select BR2_PACKAGE_ELFUTILS
+
+comment "handling debug info in traces needs a glibc or uClibc toolchain w/ dynamic library"
+	depends on !BR2_bfin # elfutils
+	depends on BR2_STATIC_LIBS \
+		|| !(BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC)
+
+endif
+
 comment "lttng-babeltrace needs a toolchain w/ wchar, threads"
 	depends on BR2_USE_MMU
 	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS
diff --git a/package/lttng-babeltrace/lttng-babeltrace.mk b/package/lttng-babeltrace/lttng-babeltrace.mk
index 30c5f6e..260a8ee 100644
--- a/package/lttng-babeltrace/lttng-babeltrace.mk
+++ b/package/lttng-babeltrace/lttng-babeltrace.mk
@@ -18,5 +18,12 @@ HOST_LTTNG_BABELTRACE_CONF_OPTS += --disable-debug-info
 # For 0001-configure.ac-remove-elfutils-version-test-for-Buildr.patch
 LTTNG_BABELTRACE_AUTORECONF = YES

+ifeq ($(BR2_PACKAGE_LTTNG_BABELTRACE_DEBUG_INFO),y)
+LTTNG_BABELTRACE_DEPENDENCIES += elfutils
+LTTNG_BABELTRACE_CONF_OPTS += --enable-debug-info
+else
+LTTNG_BABELTRACE_CONF_OPTS += --disable-debug-info
+endif
+
 $(eval $(autotools-package))
 $(eval $(host-autotools-package))
--
2.9.3