• user (17/17) Apr 09 2018 I created runtime and phobos lib for arm as described here:
• Joakim (7/24) Apr 09 2018 You need to use the C cross-compliler and the linker it prefers

user <user tmp.com> writes:

I created runtime and phobos lib for arm as described here: 
https://wiki.dlang.org/Building_LDC_runtime_libraries

This command ran and created the libs successfully:
CC=arm-linux-gnueabihf-gcc ldc-build-runtime --ninja 
--dFlags="-w;-mtriple=arm-linux-gnueabihf" 
--targetSystem="Linux;UNIX"


Now I am confused how to use these files to cross compile my 
application. I tried:

ldc2 -mtriple=arm-linux-gnueabihf lib/libdruntime-ldc.a 
lib/libphobos2-ldc.a app.d

/usr/bin/ld: app.o: Relocations in generic ELF (EM: 40)
       (above line repeated several times)
/usr/bin/ld: app.o: Relocations in generic ELF (EM: 40)
app.o: error adding symbols: File in wrong format
collect2: error: ld returned 1 exit status
Error: /usr/bin/gcc failed with status: 1

It failed with above error, any help is appreciated.

Joakim <dlang joakim.fea.st> writes:

On Monday, 9 April 2018 at 22:30:20 UTC, user wrote:
 I created runtime and phobos lib for arm as described here: 
 https://wiki.dlang.org/Building_LDC_runtime_libraries

 This command ran and created the libs successfully:
 CC=arm-linux-gnueabihf-gcc ldc-build-runtime --ninja 
 --dFlags="-w;-mtriple=arm-linux-gnueabihf" 
 --targetSystem="Linux;UNIX"


 Now I am confused how to use these files to cross compile my 
 application. I tried:

 ldc2 -mtriple=arm-linux-gnueabihf lib/libdruntime-ldc.a 
 lib/libphobos2-ldc.a app.d

 /usr/bin/ld: app.o: Relocations in generic ELF (EM: 40)
       (above line repeated several times)
 /usr/bin/ld: app.o: Relocations in generic ELF (EM: 40)
 app.o: error adding symbols: File in wrong format
 collect2: error: ld returned 1 exit status
 Error: /usr/bin/gcc failed with status: 1

 It failed with above error, any help is appreciated.

You need to use the C cross-compliler and the linker it prefers 
in order for linking to work. See this wiki page for examples:

https://wiki.dlang.org/Programming_in_D_tutorial_on_Embedded_Linux_ARM_devices

You can also set CC to the C cross-compiler and pass many linker 
options from the command-line if you want:

https://wiki.dlang.org/Build_D_for_Android#Cross-compilation_3