in reply to Re^6: Perl for ARMv7le
in thread Perl for ARMv7le

I found building natively much easier than cross-compiling.

If in your case, the gen_uudmap file wants a binary native to your host, maybe you can compile that manually and put it in the correct place?

Certainly, your cross-compilation instructions show how to handle this case?

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Re^8: Perl for ARMv7le
by monk88 (Novice) on Dec 21, 2016 at 14:54 UTC

    Its seems like i was passing wrong parm values to the configure scripts, so it always considered as native build rather than the cross build. I made some changes to the parms and it was able to generate the make file for cross build

    ./configure -Dsysroot=/opt/qnx6 -Dcc=arm-unknown-nto-qnx6.6.0eabi-gcc --target-tools-prefix=arm-unknown-nto-qnx6.6.0eabi- --target=arm-unknown-nto-qnx6.6.0eabi --host=arm-unknown-nto-qnx6.6.0eabi -Dprefix=$HOME/localperl

    The make run fine for some time and end up having following error , where it says undefined references to certain functions

    chmod 644 "PPPort.bs"
    arm-unknown-nto-qnx6.6.0eabi-gcc --sysroot=/opt/qnx660/target/qnx6 -Wl,-E -o perl perlmain.o libperl.a
    written lib/Config.pod
    make2: Leaving directory `/home/cross/perl-5.24.0'
    libperl.a(pp.o): In function `Perl_pp_crypt': pp.c:(.text+0xffd8): warning: The 'crypt' function has been deprecated in libc. Link against liblogin for extended algorithm support.
    libperl.a(toke.o): In function `Perl_scan_num':
    toke.c:(.text+0x27b82): undefined reference to `pow'
    libperl.a(util.o): In function `Perl_drand48_r':
    util.c:(.text+0xa36e): undefined reference to `ldexp'
    libperl.a(sv.o): In function `S_hextract':
    sv.c:(.text+0x13ca0): undefined reference to `frexp'
    .
    .
    time64.c:(.text+0x3482): undefined reference to `floor'
    time64.c:(.text+0x349c): undefined reference to `ceil'
    time64.c:(.text+0x3522): undefined reference to `fmod'
    time64.c:(.text+0x359c): undefined reference to `floor'
    time64.c:(.text+0x37e6): undefined reference to `ceil'
    collect2: error: ld returned 1 exit status
    make: *** perl Error 1

    could it be because i might have referenced wrong path for libraries in -Dsysroot option?

[reply]

      It might be the wrong path or it might be that you need additional libraries for your environment. A good place to put them is in the hints/qnx.sh in your case. Maybe something like libm or some other math library is missing:

      toke.c:(.text+0x27b82): undefined reference to `pow'

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        all the missing functions are from the math.h and the sysroot has the correct path to header files.

        also checked the hints/qnx.sh, even it has the correct path included in it. however i see its referencing hints/linux.pl right before the error

        INSTALLDIRS=perl INSTALLMAN1DIR=none INSTALLMAN3DIR=none \ PERL_CORE=1 LIBPERL_A=libperl.a PERL_CORE=1 PERL="../../miniperl_top"
        Processing hints file hints/linux.pl
        CONFIG key 'osname' does not exist in Config.pm
        Generating a Unix-style Makefile
        Writing Makefile for threads
        cd dist/threads-shared/ && ../../miniperl_top -I../../lib Makefile.PL \
        INSTALLDIRS=perl INSTALLMAN1DIR=none INSTALLMAN3DIR=none \ PERL_CORE=1 LIBPERL_A=libperl.a PERL_CORE=1
        PERL="../../miniperl_top"
        Processing hints file hints/linux.pl
        CONFIG key 'osname' does not exist in Config.pm
        Generating a Unix-style Makefile

        not sure why its referencing linux.pl, but for a quick test i overrided the linux.pl with qnx.pl, but ended running into same error

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