aarch64-linux-gnu-gcc vs aarch64-poky-linux for IMX8M Mini based custom hardware

[sreedhar_appala]

Hi,

We are working with IMX8M Mini based custom hardware.

when we are working with IMX8M Mini EVK, we build the toolchain and

for cross compiling and building our test application we sourced the following tools.

$ . /opt/fsl-imx-xwayland/4.9.51-mx8-ga/environment-setup-aarch64-poky-linux 

our build is fine.

My question is IMX8M Mini is ARMv8 - 64bit arcchitecture.

We believe we can cross-compile and build our test application using aarch64-linux-gnu-gcc  also.

we believe efficiency of the  output file may vary.

considering the developmet hardware is IMX8M Mini based platform. Could you please suggest and recommend which cross compiler to use and why.

Thanks in Advance,

Sreedhar

[PavanRaut]

can you please share how to install "environment-setup-aarch64-poky-linux" toolchain for iMX 8M mini

[althummar]

Hi @sreedhar_appala @Yuri  I am also working on iMX8M embedded board.

I have compiled the image and and cross compiling tool-chain for the same successfully using the bitbake meta-toolchain which has generated fsl-imx-xwayland-glibc-x86_64-meta-toolchain-aarch64-toolchain-4.14-sumo.sh to use for cross-compiling .c based project. 

But I am not aware of how I can use it in makefile based project. Here is my simple make file which is generating .exe file for me. 

# Compiler
CC = gcc

# Path to static library source (testlib.a)
LDFLAGS=-L../../testLIB/lib
LIBS=-lpthread

# C compiler flags (-c -Wall)
CFLAGS= -g -Wall

ifeq ($(OS),Windows_NT)
  RM=cmd \/C del
else
  RM=rm -f
endif

# Source files
SRCS = $(wildcard *.c)

# Object Files
OBJS = $(SRCS:.c=.o)

# Executable File
EXECUTABLE = targetImage.exe

.PHONY: depend clean

all:  myprog

myprog: $(OBJS)
	$(CC) $(CFLAGS) -o $(EXECUTABLE) $^ $(LDFLAGS) $(LIBS)

# Clean .o and .exe files form the respective directories
# make clean
clean:
	$(RM) $(OBJS) $(EXECUTABLE)

# Read source files and create dependencies
depend: $(SRCS)
	makedepend $(INCLUDES) $^

But now I want to update it to generate .exe which can be run on yocto board. Can you please guide my what I can I do to achieve the same Or if you can share me some examples or documents which I can refer to understand the same would be great help.  Thanks in advance to both of you. Please let me know if I missed to add any other required info. I am very new to this and I am stuck with this step.

[Yuri · Accepted solution]

Hello,

    Recent Linux BSP L4.19.35 supports the GCC 8.3 toolchain.

https://www.nxp.com/webapp/Download?colCode=L4.19.35_1.1.0_LINUX_DOCS 

   Generally it is possible to use different toolchains for simple applications, but using

the SDK approach is more preferable, since it provides proper environment for development.   

Have a great day,

Yuri

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[sreedhar_appala]

Hi Yuri,

Thank you for the quick reply and details.

We are using linaro toolchain "gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu" earlier.

Do you have any benchmark details for the different tool chains atleast for the linaro based toolchains and SDK based environment.

My question is very generic, kindly let me know.

Thank you, Sreedhar

[Yuri]

Hello, sreedhar.appalayagari@sony.com 

  I've not found internal comparison considerations about the toolchains, sorry :-( 

Regards,

Yuri.

[sreedhar_appala]

Thank you Yuri !