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[3/5] aarch64: ilp32: add ilp32 compiler and linker flags

Message ID 1437391542-13590-4-git-send-email-bamvor.zhangjian@huawei.com
State Superseded
Headers show

Commit Message

Bamvor Jian Zhang July 20, 2015, 11:25 a.m. UTC 
In aarch64, lp64 is the default ABI. Need pass the special flags if
the user want to compile and link ilp32 application.
Pass the special flags to linker to ensure that linker see the
same abi with compiler.

Signed-off-by: Zhang Jian(Bamvor) <bamvor.zhangjian@huawei.com>
---
 package/Makefile.in | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
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Patch

diff --git a/package/Makefile.in b/package/Makefile.in
index 2ed7cf7..c2a597a 100644
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -107,6 +107,16 @@  ifeq ($(BR2_arc)$(BR2_ARC_ATOMIC_EXT),yy)
 TARGET_ABI += -matomic
 endif
 
+ifeq ($(BR2_GCC_TARGET_ABI), "ilp32")
+ifeq ($(BR2_aarch64)$(BR2_aarch64_be),y)
+ifeq ($(BR2_ENDIAN), "BIG")
+TARGET_ABI_LDFLAGS += -Xlinker -EB
+endif
+TARGET_ABI_LDFLAGS += -Xlinker -maarch64linux32
+TARGET_ABI += -mabi=ilp32 $(TARGET_ABI_LDFLAGS)
+endif
+endif
+
 STAGING_SUBDIR = usr/$(GNU_TARGET_NAME)/sysroot
 STAGING_DIR    = $(HOST_DIR)/$(STAGING_SUBDIR)
 
@@ -140,7 +150,7 @@  endif
 TARGET_CPPFLAGS += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 TARGET_CFLAGS = $(TARGET_CPPFLAGS) $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
 TARGET_CXXFLAGS = $(TARGET_CFLAGS)
-TARGET_LDFLAGS = $(call qstrip,$(BR2_TARGET_LDFLAGS))
+TARGET_LDFLAGS = $(call qstrip,$(BR2_TARGET_LDFLAGS)) $(TARGET_ABI_LDFLAGS)
 
 ifeq ($(BR2_BINFMT_FLAT),y)
 TARGET_CFLAGS += $(if $($(PKG)_FLAT_STACKSIZE),-Wl$(comma)-elf2flt=-s$($(PKG)_FLAT_STACKSIZE),\