[Buildroot] [PATCH] Enables thread debugging with full gdb on target

[Thierry Bultel]

The libthread_db was not copied on target
GDB needs libpthread to be not stripped

Signed-off-by: Thierry Bultel <thierry.bultel at wanadoo.fr>
diff -Naur buildroot-2012.08.orig/Makefile buildroot-2012.08/Makefile
--- buildroot-2012.08.orig/Makefile	2012-08-31 10:49:41.000000000 +0200
+++ buildroot-2012.08/Makefile	2012-09-20 16:42:11.938021804 +0200
@@ -416,6 +416,10 @@
  
  $(TARGET_DIR): $(BUILD_DIR)/.root
  
+ifeq ($(BR2_PACKAGE_GDB),y)
+BR2_STRIP_EXCLUDE_FILES += libpthread*.so*
+endif
+
  STRIP_FIND_CMD = find $(TARGET_DIR)
  ifneq (,$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS)))
  STRIP_FIND_CMD += \( $(call finddirclauses,$(TARGET_DIR),$(call qstrip,$(BR2_STRIP_EXCLUDE_DIRS))) \) -prune -o
diff -Naur buildroot-2012.08.orig/toolchain/toolchain-crosstool-ng/crosstool-ng.mk buildroot-2012.08/toolchain/toolchain-crosstool-ng/crosstool-ng.mk
--- buildroot-2012.08.orig/toolchain/toolchain-crosstool-ng/crosstool-ng.mk	2012-08-31 10:49:41.000000000 +0200
+++ buildroot-2012.08/toolchain/toolchain-crosstool-ng/crosstool-ng.mk	2012-09-20 16:41:46.741771907 +0200
@@ -41,6 +41,18 @@
  CTNG_LIBS_LIB := ld*.so libc.so libcrypt.so libdl.so libgcc_s.so libm.so    \
                   libnsl.so libpthread.so libresolv.so librt.so libutil.so
  
+ifeq ($(BR2_PACKAGE_GDB_SERVER),y)
+CTNG_LIBS_LIB_THREAD_DB_NEEDED := y
+endif
+
+ifeq ($(BR2_PACKAGE_GDB),y)
+CTNG_LIBS_LIB_THREAD_DB_NEEDED := y
+endif
+
+ifeq ($(CTNG_LIBS_LIB_THREAD_DB_NEEDED),y)
+CTNG_LIBS_LIB += libthread_db.so
+endif
+
  #--------------
  # The libc-specific system libraries (in /lib)
  # Note: it may be needed to tweak the NSS libs in the glibc and eglibc cases...