Thanks, Victor! This was really helpful! This should be put in the
FAQ. I'm sure I'm not the only one who was wondering how to use this.
-John
Victor Duchovni wrote:
On Sun, Feb 08, 2009 at 09:06:23PM -0500, John Center wrote:
Hi,
I'm trying to understand the Configure command line options. How does one
use the last option listed:
os/compiler[:flags]
I see something similar in the Configure script itself:
#config-string $cc : $cflags : $unistd : $thread_cflag : $sys_id : $lflags
: $bn_ops : $cpuid_obj : $bn_obj : $des_obj : $aes_obj : $bf_obj : $md5_obj
: $sha1_obj : $cast_obj : $rc4_obj : $rmd160_obj : $rc5_obj : $dso_scheme :
$shared_target : $shared_cflag : $shared_ldflag : $shared_extension :
$ranlib : $arflags
Is this what it's referring to? Should I be able to pass the various flags
listed? If I wanted to change just the $shared_ldflag, how would I do
this?
Here's an example:
export OPTIONS="no-zlib no-idea threads shared"
export OSTYPE=linux-x86_64
export LDFLAGS="..."
SYSTEM_OPTIONS=$(
./Configure TABLE |
perl -ne '
BEGIN {$/="\n\n"}
chomp;
print "$_\n" if (s/\A\*\*\* ($ENV{OSTYPE})/\$platform = $1/);
' |
perl -pe 's{^(\$lflags\s*=\s*.*)}{$1 $ENV{LDFLAGS}};' |
perl -pe 's{^[^=]*=[^\S\n]*}{}; s/\$/\\\$/g; s/\n/:/ unless eof();'
)
./Configure $OPTIONS "$SYSTEM_OPTIONS"
Season to taste. The idea is to parse the output of "./Configure TABLE"
and construct the appropriate modified option spec.
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