On Thu, Sep 27, 2018 at 2:57 PM, Amandeep Gautam
<amandeepgaut...@gmail.com> wrote:
> Hi,
> I am trying to compile a 64bit executable using gccgo on Solaris 11/10.
> Following is what I have tried:
>
> CGO_LDFLAGS='-m64' go build hello_world.go
> GOARCH=sparc64 CGO_LDFLAGS='-m64' go build hello_world.go
>
> Below is the output of the first command:
>
> amandeep@s113ldom1:~/workspace$ CGO_LDFLAGS='-m64' go build pqrs.go
> # command-line-arguments
> ld: warning: file $WORK/b001/_pkg_.a(_go_.o): wrong ELF class: ELFCLASS32
> Undefined first referenced
> symbol in file
> main.main
> /usr/gnu/lib/gcc/sparc-sun-solaris2.11/8.2.1/../../../sparcv9/libgo.so
> __go_init_main
> /usr/gnu/lib/gcc/sparc-sun-solaris2.11/8.2.1/../../../sparcv9/libgo.so
> ld: fatal: symbol referencing errors
> collect2: error: ld returned 1 exit status
>
> However, I am able to generate 64 bit executable for c++ helloworld using
> just gcc, so I am hoping it boils down to passing the right set of flags.
> For example:
>
> amandeep@s113ldom1:~/workspace$ /usr/gnu/bin/gcc -m64 helloworld.c
> amandeep@s113ldom1:~/workspace$ file ./a.out
> ./a.out: ELF 64-bit MSB executable SPARCV9 Version 1, dynamically
> linked, not stripped, no debugging information available
> amandeep@s113ldom1:~/workspace$ file /usr/gnu/bin/gcc
> /usr/gnu/bin/gcc: ELF 32-bit MSB executable SPARC32PLUS Version 1, V8+
> Required, dynamically linked, not stripped
>
> How would you compile a 64 bit executable for Solaris using gccgo?
CGO_LDFLAGS only affects your program if it actually uses cgo.
Does it work to do
go build -gccgoflags=-m64
?
Ian
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