[ clisp-Bugs-3560795 ] armv6l/armhf: ariarm.c does not get generated

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Bugs item #3560795, was opened at 2012-08-22 13:11
Message generated for change (Tracker Item Submitted) made by cptsalek
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Category: clisp
Group: build problems
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Christian Walther (cptsalek)
Assigned to: Bruno Haible (haible)
Summary: armv6l/armhf: ariarm.c does not get generated

Initial Comment:
System: Raspberry Pi

% uname -a
Linux tinkerbell 3.1.9+ #272 PREEMPT Tue Aug 7 22:51:44 BST 2012 armv6l GNU/Linux
% cat /proc/cpuinfo 
#Processor      : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS        : 697.95
Features        : swp half thumb fastmult vfp edsp java tls 
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xb76
CPU revision    : 7

Hardware        : BCM2708
Revision        : 0002
Serial          : 00000000b096e6b2

The second error I encountered is a missing ariarm.c:
gcc -march=armv6 -mfpu=vfp -mfloat-abi=hard -I/home/cptsalek/local/clisp/src/gllib -g -O2 -W -Wswitch -Wcomment -Wpointer-arith -Wreturn-type -Wmissing-declarations -Wimplicit -Wno-sign-compare -Wno-format-nonliteral -O2 -falign-functions=4 -DENABLE_UNICODE -DDYNAMIC_FFI -DDYNAMIC_MODULES -c lisparit.c
In file included from lisparit.d:28:0:
arilev1.d:270:26: fatal error: ariarm.c: No such file or directory
compilation terminated.
make: *** [lisparit.o] Error 1

This one can be traced back to a set of definitions and their handling in makemake.

After running configure, makemake contains the following definition:
host='armv6l-unknown-linux-gnueabi'                       # something like 'sparc-sun-sunos4'
host_cpu='armv6l'               # something like 'sparc'
host_cpu_c_abi='armel'   # ditto

In the following block cpu is set to $host_cpu_c_abi, thus containing armel as well:
# Main cpu dependencies:
cpu=$host_cpu_c_abi
if test -z "$cpu"; then
  echo "$0: WARNING: host_cpu_c_abi is void; using host_cpu=${host_cpu}" >&2
  case "$host_cpu" in
    hppa*) cpu=hppa ;;
    arm*)  cpu=arm  ;;
    mips64*) cpu=mips64 ;;
    * ) cpu=${host_cpu}
  esac
fi

But later on, where ARI_ASMD and ARI_ASMS are defined, there is no matching case for "armel", the only case for ARM cpus is the following:
if [ "$cpu" = arm ] ; then
  ARI_ASMD=$ARI_ASMD' ariarm'
  ARI_ASMS=$ARI_ASMS' ariarm'
fi

This probably goes undetected, makemake finishes, but no ariarm.c has been created.

As a workaround I forced host_cpu_c_abi to be ignored for arm by encapsulating cpu=$host_cpu_c_abi in a case statement.

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