From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mischa Jonker Date: Wed, 24 Apr 2013 12:13:19 +0200 Subject: [Buildroot] [PATCH v2 08/12] arc: Make sure that libgcc doesn't get included when it doesn't exist yet In-Reply-To: <1366798403-6984-1-git-send-email-mjonker@synopsys.com> References: <1366798403-6984-1-git-send-email-mjonker@synopsys.com> Message-ID: <1366798403-6984-9-git-send-email-mjonker@synopsys.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net For ARC, libgcc is always included, even when -nostdlib is given. This is related to some small pieces of code that are not always generated by the compiler; a call to libgcc is used in those cases instead. During the initial stages of building the toolchain, this is a problem, as libgcc does not exist yet. The ARC compiler supports -really-nostdlib to override the default behavior. Signed-off-by: Mischa Jonker --- toolchain/uClibc/uclibc.mk | 15 +++++++++++++-- 1 files changed, 13 insertions(+), 2 deletions(-) diff --git a/toolchain/uClibc/uclibc.mk b/toolchain/uClibc/uclibc.mk index 1629e76..d4f1d4c 100644 --- a/toolchain/uClibc/uclibc.mk +++ b/toolchain/uClibc/uclibc.mk @@ -404,6 +404,17 @@ ifeq ($(BR2_CCACHE),y) $(UCLIBC_DIR)/.config: | host-ccache endif +# For ARC, libgcc is always included, even when -nostdlib is given. This +# is related to some small pieces of code that are not always generated +# by the compiler; a call to libgcc is used in those cases instead. +# +# During the initial stages of building the toolchain, this is a problem, +# as libgcc does not exist yet. The ARC compiler supports -really-nostdlib +# to override the default behavior. +ifeq ($(BR2_arc),y) +REALLY_NOSTDLIB=-really-nostdlib +endif + $(UCLIBC_DIR)/.configured: $(LINUX_HEADERS_DIR)/.configured $(UCLIBC_DIR)/.config $(Q)$(call MESSAGE,"Installing uClibc headers") $(MAKE1) -C $(UCLIBC_DIR) \ @@ -422,8 +433,8 @@ $(UCLIBC_DIR)/.configured: $(LINUX_HEADERS_DIR)/.configured $(UCLIBC_DIR)/.confi cp -pLR $(LINUX_HEADERS_DIR)/include/* \ $(TOOLCHAIN_DIR)/uClibc_dev/usr/include/; \ fi - $(TARGET_CROSS)gcc -nostdlib -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libc.so - $(TARGET_CROSS)gcc -nostdlib -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libm.so + $(TARGET_CROSS)gcc -nostdlib $(REALLY_NOSTDLIB) -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libc.so + $(TARGET_CROSS)gcc -nostdlib $(REALLY_NOSTDLIB) -nostartfiles -shared -x c /dev/null -o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/libm.so cp -pLR $(UCLIBC_DIR)/lib/crt[1in].o $(TOOLCHAIN_DIR)/uClibc_dev/usr/lib/ touch $@ -- 1.7.0.4