#291 perldl.conf OPTIMIZE option doesn't work
I tried using that to override the default -O2 from $Config{ccflags}
to work around a gcc crash for the primitive.pd stuff but it had no
effect. There should be a better way to control the build process
for this case (which includes building for debugging).
This was for SPP:
Summary of my perl5 (revision 5 version 14 subversion 2) configuration:
Platform:
osname=MSWin32, osvers=4.0, archname=MSWin32-x86-multi-thread
uname='Win32 strawberryperl 5.14.2.1-portable #1 Tue Nov 22 18:24:29 2011 i386'
config_args='undef'
hint=recommended, useposix=true, d_sigaction=undef
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=undef, use64bitall=undef, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='gcc', ccflags =' -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DUSE_SITECUSTOMIZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -fno-strict-aliasing -mms-bitfields', optimize='-s -O2', cppflags='-DWIN32' ccversion='', gccversion='4.4.7', gccosandvers='' intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234 d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=12 ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='long long', lseeksize=8 alignbytes=8, prototype=define
Linker and Libraries:
ld='g++.exe', ldflags ='-s -L"C:\chm\strawberry\514-pdl-249991\perl\lib\CORE" -L"C:\chm\strawberry\514-pdl-249991\c\lib"'
libpth=C:\chm\strawberry\514-pdl-249991\c\lib C:\chm\strawberry\514-pdl-249991\c\i686-w64-mingw32\lib
libs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32
perllibs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32
libc=, so=dll, useshrplib=true, libperl=libperl514.a
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
cccdlflags=' ', lddlflags='-mdll -s -L"C:\chm\strawberry\514-pdl-249991\perl\lib\CORE" -L"C:\chm\strawberry\514-pdl-249991\c\lib"'
Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_IMPLICIT_SYS
PERL_MALLOC_WRAP PERL_PRESERVE_IVUV PL_OP_SLAB_ALLOC
USE_ITHREADS USE_LARGE_FILES USE_PERLIO USE_PERL_ATOF
USE_SITECUSTOMIZE
Built under MSWin32
Compiled at Nov 22 2011 18:32:55
%ENV:
PERL_JSON_BACKEND="JSON::XS"
PERL_YAML_BACKEND="YAML"
@INC:
C:/chm/strawberry/514-pdl-249991/perl/site/lib
C:/chm/strawberry/514-pdl-249991/perl/vendor/lib
C:/chm/strawberry/514-pdl-249991/perl/lib
.
Warning:: ugly work-around follows!
I started the build process and then monitored the Basic/Primitive
folder for the appearance of the Makefile. Then I quickly edited
out the -O2 options appearing therein before the build progressed to
that directory. Yuck!
The optimization docs for gcc http://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html state that "If you use multiple -O options, with or without level numbers, the last such option is the one that is effective." And CCFLAGS comes before OPTIMIZE options when produced by EU::MM. When I put in '-O0 -g' for OPTIMIZE in perldl.conf (that's "dash Oh zero"), my compilation lines look like this:
/usr/bin/gcc-4.2 -c -I/usr/include -pipe -O2 -fno-common -DPERL_DARWIN -I/opt/local/include -no-cpp-precomp -fno-strict-aliasing -fstack-protector -I/opt/local/include -O0 -g -DVERSION=\"2.4.11\" -DXS_VERSION=\"2.4.11\" "-I/opt/local/lib/perl5/5.14.2/darwin-multi-2level/CORE" -DPDL_PTHREAD Core.c
So presumably the -O2 will be ignored in favor of the later -O0.
Added a note to the text above OPTIMIZE in perldl.conf advising the use of -O0 in addition to -g. I compiled PDL with this, installed, and produced a segfault, examined the dumped core and seemed to get full debugging info including line numbers from pdlcore.c.
Marking this as pending to see if that solution works for others.
Bug fixed in Git.
Thanks for reporting the problem!
Documentation was added to perldl.conf regarding how to set OPTIMIZE appropriately. Thanks, Derek.
Bug fixed in Git.
Thanks for reporting the problem!