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-rw-r--r--toolchain/external-toolchain/ext-tool.mk51
1 files changed, 51 insertions, 0 deletions
diff --git a/toolchain/external-toolchain/ext-tool.mk b/toolchain/external-toolchain/ext-tool.mk
index ca7113740..b904775f4 100644
--- a/toolchain/external-toolchain/ext-tool.mk
+++ b/toolchain/external-toolchain/ext-tool.mk
@@ -56,10 +56,61 @@ EXTERNAL_LIBC=libc.so.6
EXTERNAL_LIBS=ld-linux.so.3 libcrypt.so.1 libdl.so.2 libgcc_s.so.1 libm.so.6 libnsl.so.1 libpthread.so.0 libresolv.so.2 librt.so.1 libutil.so.1 libnss_files.so.2
endif
+check_clibrary = \
+ if ! test -f `$(TARGET_CC) -print-file-name=$(EXTERNAL_LIBC)` ; then \
+ echo "Incorrect selection of the C library"; \
+ exit -1; \
+ fi
+
+# 1: Buildroot option name
+# 2: message
+check_glibc_feature = \
+ if [ x$($(1)) != x"y" ] ; then \
+ echo "$(2) available in C library, please enable $(1)" ; \
+ exit 1 ; \
+ fi
+
+check_glibc = \
+ $(call check_glibc_feature,BR2_LARGEFILE,Large file support) ;\
+ $(call check_glibc_feature,BR2_INET_IPV6,IPv6 support) ;\
+ $(call check_glibc_feature,BR2_INET_RPC,RPC support) ;\
+ $(call check_glibc_feature,BR2_ENABLE_LOCALE,Locale support) ;\
+ $(call check_glibc_feature,BR2_USE_WCHAR,Wide char support)
+
+# 1: uClibc macro name
+# 2: Buildroot option name
+# 3: uClibc config file
+# 4: message
+check_uclibc_feature = \
+ IS_IN_LIBC=`grep -q "\#define $(1) 1" $(3) && echo y` ; \
+ if [ x$($(2)) != x"y" -a x$${IS_IN_LIBC} == x"y" ] ; then \
+ echo "$(4) available in C library, please enable $(2)" ; \
+ exit 1 ; \
+ fi ; \
+ if [ x$($(2)) == x"y" -a x$${IS_IN_LIBC} != x"y" ] ; then \
+ echo "$(4) not available in C library, please disable $(2)" ; \
+ exit 1 ; \
+ fi
+
+check_uclibc = \
+ SYSROOT_DIR=`$(TARGET_CC) -v 2>&1 | grep ^Configured | tr " " "\n" | grep -- "--with-sysroot" | cut -f2 -d=`; \
+ UCLIBC_CONFIG_FILE=$${SYSROOT_DIR}/usr/include/bits/uClibc_config.h ; \
+ $(call check_uclibc_feature,__UCLIBC_HAS_LFS__,BR2_LARGEFILE,$${UCLIBC_CONFIG_FILE},Large file support) ;\
+ $(call check_uclibc_feature,__UCLIBC_HAS_IPV6__,BR2_INET_IPV6,$${UCLIBC_CONFIG_FILE},IPv6 support) ;\
+ $(call check_uclibc_feature,__UCLIBC_HAS_RPC__,BR2_INET_RPC,$${UCLIBC_CONFIG_FILE},RPC support) ;\
+ $(call check_uclibc_feature,__UCLIBC_HAS_LOCALE__,BR2_ENABLE_LOCALE,$${UCLIBC_CONFIG_FILE},Locale support) ;\
+ $(call check_uclibc_feature,__UCLIBC_HAS_WCHAR__,BR2_USE_WCHAR,$${UCLIBC_CONFIG_FILE},Wide char support) ;\
uclibc: dependencies $(TARGET_DIR)/lib/$(EXTERNAL_LIBC)
$(TARGET_DIR)/lib/$(EXTERNAL_LIBC):
+ @echo "Checking external toolchain settings"
+ @$(call check_clibrary)
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y)
+ @$(call check_uclibc)
+else
+ @$(call check_glibc)
+endif
mkdir -p $(TARGET_DIR)/lib
@echo "Copy external toolchain libraries to target..."
@$(call copy_toolchain_lib_root, $(EXTERNAL_LIBC), /lib, $(BR2_TOOLCHAIN_EXTERNAL_STRIP))