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Troubles with linking custom application arm-ostl-linux-gnueabi-gcc for STM32MP157x-DK2

btank
Associate

Hi, I tried the Hello World application on Cortex-A7, I want to try linking my custom application library in this example. Can I do that?

I changed the print_hello function and calling another function from my custom library.

I tried linking custom library in Makefile by

LDFLAGS += $(shell pkg-config --libs gtk+-3.0) -lxxxxx.a

The library file is in the same folder. But Get the below error:

 

arm-ostl-linux-gnueabi-gcc -mthumb -mfpu=neon-vfpv4 -mfloat-abi=hard -mcpu=cortex-a7 --sysroot=/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi -o gtk_hello_world gtk_hello_world.c -O2 -pipe -g -feliminate-unused-debug-types -Wall -pthread 
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/gtk-3.0 -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/gio-unix-2.0
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/pango-1.0 -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/harfbuzz
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/pango-1.0 -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/fribidi
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/harfbuzz -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/atk-1.0
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/cairo -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/pixman-1
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/freetype2 -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/gdk-pixbuf-2.0
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/libpng16 -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/libmount
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/blkid -I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/include/glib-2.0
-I/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi/usr/lib/glib-2.0/include -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lmasq_bn_util_qtp-cortex-a7.a
/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/x86_64-ostl_sdk-linux/usr/libexec/arm-ostl-linux-gnueabi/gcc/arm-ostl-linux-gnueabi/12.2.0/ld: cannot find : No such file or directory
/home/usr-x/STM32MPU_workspace/Developer-Package/SDK/sysroots/x86_64-ostl_sdk-linux/usr/libexec/arm-ostl-linux-gnueabi/gcc/arm-ostl-linux-gnueabi/12.2.0/ld: cannot find -lmasq_bn_util_qtp-cortex-a7.a: No such file or directory
collect2: error: ld returned 1 exit status
make: *** [Makefile:13: gtk_hello_world] Error 1


 What is wrong here? How can I link library?

Can we not use GTK demo launcher?

I want to run simple C application on cortexA7.

Any help is highly appreciated. Thank you.

1 REPLY 1
Erwan SZYMANSKI
ST Employee

Hello @btank ,
Can you try to precise explicitly so path of your library by adding this :

LDFLAGS += $(shell pkg-config --libs gtk+-3.0) -L<absolute_path_of_lib> -lxxxxx.a

If still not working and if possible, can you provide a little bit more information about your Makefile, your project structure ?

Kind regards,
Erwan 

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