编译Qt5.9出错,理由是加了-mfloat-abi=softfp参数, TI给出的qmake.conf有加入这个参数,请问是去哪里找支持softfp的工具链? 出错信息: > arm-linux-gnueabihf-g++ -Wl,-O1 -fuse-ld=gold -o verifyspec verifyspec.o -L/opt/software/am335x-evm-linux-sdk-bin-04.03.00.05/board-support-bin/filesystem/t...
-mfloat-abi=softfp的问题,指定fpu为neon 测试使用的C语言程序源码如下,程序源码文件是 arm-c-disassemble.c:int sum(int a, int b) return a+b; }int sub(int a, int b) return a-b; }1、编译但是不汇编,查看产生的汇编源码程序源码: arm-linux-androideabi-gcc -S -o arm-c-disassemble-fp.s ...
mfloat-abi取值有三个“soft”,“softfp”,“hard”,此处指定mfloat-abi为“softfp”,然后编译: arm-linux-androideabi-gcc -S -march=armv7-a -mfloat-abi=softfp -mfpu=neon -o arm-c-disassemble-fp.s arm-c-disassemble.c查看编译后产生的汇编语言程序源码: .arch armv7-a .eabi_attribute 27, 3 ....
-mfloat-abi=softfp的问题指定fpu为neon.docx,-mfloat-abi=softfp 的问题,指定 fpu 为 neon 测试使用的 C 语言程序源码如下,程序源码文件是 arm-c-disassemble.c: int sum(int a, int b) return a + b; }int sub(int a, int b) return a - b; }1 、编译但是不汇编,查看
softfp按照他的翻译是,虽然生成了浮点指定,但是仍然使用软浮点运算的调用规则 -mfloat-abi=name Specifies which floating-point ABI to use. Permissible values are: `soft', `softfp' and `hard'. Specifying `soft' causes GCC to generate output containing library calls for floating-point operations. `soft...
-mfloat-abi=softfp的问题,指定fpu为neon 测试使用的C语言程序源码如下,程序源码文件是arm-c-: int sum(int a, int b) { return a + b; }int sub(int a, int b) { return a - b; }1、编译但是不汇编,查看产生的汇编源码程序源码: arm-linux-androideabi-gcc -S -o arm-c-disassemble- arm-c...
总结 针对cc1: error: '-mfloat-abi=hard': selected processor lacks an FPU 错误,你需要确认处理器是否支持 FPU,并根据支持情况调整编译选项。如果不支持 FPU,移除或更改 -mfloat-abi=hard 选项为 -mfloat-abi=soft 或-mfloat-abi=softfp。如果问题仍然存在,检查编译环境设置是否正确。
The default project settings of a created application do not include any specific configuration, so the toolchain makes use of mfloat-abi=softfp by default. This behavior can be checked by examining the disassembly code of any floating point operation. ...
-- Performing Test LJ_ABI_SOFTFP_1 -- Performing Test LJ_ABI_SOFTFP_1 - Failed -- Performing Test LJ_NO_UNWIND_1 -- Performing Test LJ_NO_UNWIND_1 - Failed -- Checking if the toolchain always generates unwind tables -- Toolchain does not generate unwind tables ...
e.g. make HOSTCC=gcc CC=arm-linux-androideabi-gcc NO_LAPACK=1 TARGET=ARMV7 In Android NDK, it uses armeabi-v7a-hard ABI. TARGET_CFLAGS += -mhard-float -D_NDK_MATH_NO_SOFTFP=1 TARGET_LDFLAGS += -Wl,--no-warn-mismatch -lm_hard For more information, please check hard-float example...