loongarch64 cross compile failed!

[Linkcy97]

System Details

2k1000la

loongarch64-linux-gnu-2021-12-10-vector

Problems Description

root@linkcy-virtual-machine:/home/linkcy/Desktop/cross/libffi-3.4.3-target# make && make install
MAKE x86_64-pc-linux-gnu : 0 * all-all
make[1]: 进入目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu”
make all-recursive
make[2]: 进入目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu”
Making all in include
make[3]: 进入目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/include”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/include”
Making all in testsuite
make[3]: 进入目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/testsuite”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/testsuite”
Making all in man
make[3]: 进入目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/man”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/man”
Making all in doc
make[3]: 进入目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/doc”
make[3]: 对“all”无需做任何事。
make[3]: 离开目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu/doc”
make[3]: 进入目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu”
depbase=echo src/prep_cif.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||';
/bin/bash ./libtool --tag=CC --mode=compile loongarch64-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -Wall -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -fexceptions -MT src/prep_cif.lo -MD -MP -MF $depbase.Tpo -c -o src/prep_cif.lo ../src/prep_cif.c &&
mv -f $depbase.Tpo $depbase.Plo
libtool: compile: loongarch64-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -Wall -O3 -fomit-frame-pointer -fstrict-aliasing -ffast-math -fexceptions -MT src/prep_cif.lo -MD -MP -MF src/.deps/prep_cif.Tpo -c ../src/prep_cif.c -fPIC -DPIC -o src/.libs/prep_cif.o
In file included from include/ffi.h:84,
from ../src/prep_cif.c:27:
include/ffitarget.h:63:2: error: #error unsupported LoongArch floating-point ABI
#error unsupported LoongArch floating-point ABI
^~~~~
make[3]: *** [Makefile:1319：src/prep_cif.lo] 错误 1
make[3]: 离开目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu”
make[2]: *** [Makefile:1396：all-recursive] 错误 1
make[2]: 离开目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu”
make[1]: *** [Makefile:624：all] 错误 2
make[1]: 离开目录“/home/linkcy/Desktop/cross/libffi-3.4.3-target/loongarch64-unknown-linux-gnu”
make: *** [Makefile:593：all-all] 错误 2

[inkydragon]

include/ffitarget.h:63:2: error: #error unsupported LoongArch floating-point ABI
#error unsupported LoongArch floating-point ABI
^~~~~

libffi/src/loongarch64/ffitarget.h

Lines 56 to 64 in ac598b7

	#if defined(__loongarch_soft_float)
	FFI_DEFAULT_ABI = FFI_LP64S
	#elif defined(__loongarch_single_float)
	FFI_DEFAULT_ABI = FFI_LP64F
	#elif defined(__loongarch_double_float)
	FFI_DEFAULT_ABI = FFI_LP64D
	#else
	#error unsupported LoongArch floating-point ABI
	#endif

You may not properly set the default ABI.

If possible also try to ask in the LoongArch community, as probably most people don't have a working environment to reproduce the issue.