📄 ltconfig
字号:
special_shlib_compile_flags='-belf'
;;
solaris2*)
pic_flag='-KPIC'
link_static_flag='-Bstatic'
wl='-Wl,'
;;
sunos4*)
pic_flag='-PIC'
link_static_flag='-Bstatic'
wl='-Qoption ld '
;;
sysv4.2uw2*)
pic_flag='-KPIC'
link_static_flag='-Bstatic'
wl='-Wl,'
;;
uts4*)
pic_flag='-pic'
link_static_flag='-Bstatic'
;;
*)
can_build_shared=no
;;
esac
fi
if test -n "$pic_flag"; then
echo "$ac_t$pic_flag" 1>&6
# Check to make sure the pic_flag actually works.
echo $ac_n "checking if $compiler PIC flag $pic_flag works... $ac_c" 1>&6
$rm conftest*
echo > conftest.c
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $pic_flag -DPIC"
echo "$progname:547: checking if $compiler PIC flag $pic_flag works" >&5
if { (eval echo $progname:548: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; } && test -s conftest.o; then
# Append any warnings to the config.log.
cat conftest.err 1>&5
# On HP-UX, both CC and GCC only warn that PIC is supported... then they
# create non-PIC objects. So, if there were any warnings, we assume that
# PIC is not supported.
if test -s conftest.err; then
echo "$ac_t"no 1>&6
can_build_shared=no
pic_flag=
else
echo "$ac_t"yes 1>&6
pic_flag=" $pic_flag"
fi
else
# Append any errors to the config.log.
cat conftest.err 1>&5
can_build_shared=no
pic_flag=
echo "$ac_t"no 1>&6
fi
CFLAGS="$save_CFLAGS"
$rm conftest*
else
echo "$ac_t"none 1>&6
fi
# Check for any special shared library compilation flags.
if test -n "$special_shlib_compile_flags"; then
echo "$progname: warning: \`$CC' requires \`$special_shlib_compile_flags' to build shared libraries" 1>&2
if echo "$old_CC $old_CFLAGS " | egrep -e "[ ]$special_shlib_compile_flags[ ]" >/dev/null; then :
else
echo "$progname: add \`$special_shlib_compile_flags' to the CC or CFLAGS env variable and reconfigure" 1>&2
can_build_shared=no
fi
fi
echo $ac_n "checking if $compiler static flag $link_static_flag works... $ac_c" 1>&6
$rm conftest*
echo 'main(){return(0);}' > conftest.c
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $link_static_flag"
echo "$progname:591: checking if $compiler static flag $link_static_flag works" >&5
if { (eval echo $progname:592: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
echo "$ac_t$link_static_flag" 1>&6
else
echo "$ac_t"none 1>&6
link_static_flag=
fi
LDFLAGS="$save_LDFLAGS"
$rm conftest*
if test -z "$LN_S"; then
# Check to see if we can use ln -s, or we need hard links.
echo $ac_n "checking whether ln -s works... $ac_c" 1>&6
$rm conftestdata
if ln -s X conftestdata 2>/dev/null; then
$rm conftestdata
LN_S="ln -s"
else
LN_S=ln
fi
if test "$LN_S" = "ln -s"; then
echo "$ac_t"yes 1>&6
else
echo "$ac_t"no 1>&6
fi
fi
# Make sure LD is an absolute path.
if test -z "$LD"; then
ac_prog=ld
if test "$with_gcc" = yes; then
# Check if gcc -print-prog-name=ld gives a path.
echo $ac_n "checking for ld used by GCC... $ac_c" 1>&6
echo "$progname:624: checking for ld used by GCC" >&5
ac_prog=`($CC -print-prog-name=ld) 2>&5`
case "$ac_prog" in
# Accept absolute paths.
/* | [A-Za-z]:\\*)
test -z "$LD" && LD="$ac_prog"
;;
"")
# If it fails, then pretend we are not using GCC.
ac_prog=ld
;;
*)
# If it is relative, then search for the first ld in PATH.
with_gnu_ld=unknown
;;
esac
elif test "$with_gnu_ld" = yes; then
echo $ac_n "checking for GNU ld... $ac_c" 1>&6
echo "$progname:642: checking for GNU ld" >&5
else
echo $ac_n "checking for non-GNU ld""... $ac_c" 1>&6
echo "$progname:645: checking for non-GNU ld" >&5
fi
if test -z "$LD"; then
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
for ac_dir in $PATH; do
test -z "$ac_dir" && ac_dir=.
if test -f "$ac_dir/$ac_prog"; then
LD="$ac_dir/$ac_prog"
# Check to see if the program is GNU ld. I'd rather use --version,
# but apparently some GNU ld's only accept -v.
# Break only if it was the GNU/non-GNU ld that we prefer.
if "$LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
test "$with_gnu_ld" != no && break
else
test "$with_gnu_ld" != yes && break
fi
fi
done
IFS="$ac_save_ifs"
fi
if test -n "$LD"; then
echo "$ac_t$LD" 1>&6
else
echo "$ac_t"no 1>&6
fi
if test -z "$LD"; then
echo "$progname: error: no acceptable ld found in \$PATH" 1>&2
exit 1
fi
fi
# Check to see if it really is or is not GNU ld.
echo $ac_n "checking if the linker ($LD) is GNU ld... $ac_c" 1>&6
# I'd rather use --version here, but apparently some GNU ld's only accept -v.
if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
with_gnu_ld=yes
else
with_gnu_ld=no
fi
echo "$ac_t$with_gnu_ld" 1>&6
# See if the linker supports building shared libraries.
echo $ac_n "checking whether the linker ($LD) supports shared libraries... $ac_c" 1>&6
allow_undefined_flag=
no_undefined_flag=
archive_cmds=
old_archive_from_new_cmds=
export_dynamic_flag_spec=
hardcode_libdir_flag_spec=
hardcode_libdir_separator=
hardcode_direct=no
hardcode_minus_L=no
hardcode_shlibpath_var=unsupported
runpath_var=
case "$host_os" in
amigaos* | sunos4*)
# On these operating systems, we should treat GNU ld like the system ld.
gnu_ld_acts_native=yes
;;
*)
gnu_ld_acts_native=no
;;
esac
ld_shlibs=yes
if test "$with_gnu_ld" = yes && test "$gnu_ld_acts_native" != yes; then
# See if GNU ld supports shared libraries.
if $LD --help 2>&1 | egrep ': supported targets:.* elf' > /dev/null; then
archive_cmds='$CC -shared ${wl}-soname $wl$soname -o $lib$libobjs'
runpath_var=LD_RUN_PATH
ld_shlibs=yes
else
ld_shlibs=no
fi
if test "$ld_shlibs" = yes; then
hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
export_dynamic_flag_spec='${wl}--export-dynamic'
fi
else
# PORTME fill in a description of your system's linker (not GNU ld)
case "$host_os" in
aix3*)
allow_undefined_flag=unsupported
archive_cmds='$NM$libobjs | $global_symbol_pipe | sed '\''s/.* //'\'' > $lib.exp;$LD -o $objdir/$soname$libobjs -bE:$lib.exp -T512 -H512 -bM:SRE;$AR cru $lib $objdir/$soname'
# Note: this linker hardcodes the directories in LIBPATH if there
# are no directories specified by -L.
hardcode_minus_L=yes
if test "$with_gcc" = yes && test -z "$link_static_flag"; then
# Neither direct hardcoding nor static linking is supported with a
# broken collect2.
hardcode_direct=unsupported
fi
;;
aix4*)
allow_undefined_flag=unsupported
archive_cmds='$NM$libobjs | $global_symbol_pipe | sed '\''s/.* //'\'' > $lib.exp;$CC -o $objdir/$soname$libobjs ${wl}-bE:$lib.exp ${wl}-bM:SRE ${wl}-bnoentry;$AR cru $lib $objdir/$soname'
hardcode_direct=yes
hardcode_minus_L=yes
;;
amigaos*)
archive_cmds='$rm $objdir/a2ixlibrary.data;$echo "#define NAME $libname" > $objdir/a2ixlibrary.data;$echo "#define LIBRARY_ID 1" >> $objdir/a2ixlibrary.data;$echo "#define VERSION $major" >> $objdir/a2ixlibrary.data;$echo "#define REVISION $revision" >> $objdir/a2ixlibrary.data;$AR cru $lib$libobjs;$RANLIB $lib;(cd $objdir && a2ixlibrary -32)'
hardcode_libdir_flag_spec='-L$libdir'
hardcode_minus_L=yes
;;
# FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
# support. Future versions do this automatically, but an explicit c++rt0.o
# does not break anything, and helps significantly (at the cost of a little
# extra space).
freebsd2.2*)
archive_cmds='$LD -Bshareable -o $lib$libobjs /usr/lib/c++rt0.o'
hardcode_libdir_flag_spec='-R$libdir'
hardcode_direct=yes
hardcode_minus_L=yes
hardcode_shlibpath_var=no
;;
# Unfortunately, older versions of FreeBSD 2 do not have this feature.
freebsd2*)
archive_cmds='$LD -Bshareable -o $lib$libobjs'
hardcode_direct=yes
hardcode_minus_L=yes
hardcode_shlibpath_var=no
;;
# FreeBSD 3, at last, uses gcc -shared to do shared libraries.
freebsd3*)
archive_cmds='$CC -shared -o $lib$libobjs'
hardcode_libdir_flag_spec='-R$libdir'
hardcode_direct=yes
hardcode_minus_L=yes
hardcode_shlibpath_var=no
;;
hpux9*)
archive_cmds='$rm $objdir/$soname;$LD -b +s +b $install_libdir -o $objdir/$soname$libobjs;mv $objdir/$soname $lib'
hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
hardcode_direct=yes
hardcode_minus_L=yes
export_dynamic_flag_spec='${wl}-E'
;;
hpux10*)
archive_cmds='$LD -b +h $soname +s +b $install_libdir -o $lib$libobjs'
hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
hardcode_direct=yes
hardcode_minus_L=yes
export_dynamic_flag_spec='${wl}-E'
;;
irix5* | irix6*)
archive_cmds='$LD -shared -o $lib -soname $soname -set_version $verstring$libobjs'
hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
;;
netbsd*)
# Tested with NetBSD 1.2 ld
archive_cmds='$LD -Bshareable -o $lib$libobjs'
hardcode_libdir_flag_spec='-R$libdir'
hardcode_direct=yes
hardcode_shlibpath_var=no
;;
openbsd*)
archive_cmds='$LD -Bshareable -o $lib$libobjs'
hardcode_libdir_flag_spec='-R$libdir'
hardcode_direct=yes
hardcode_shlibpath_var=no
;;
os2*)
hardcode_libdir_flag_spec='-L$libdir'
hardcode_minus_L=yes
allow_undefined_flag=unsupported
archive_cmds='$echo "LIBRARY $libname INITINSTANCE" > $objdir/$libname.def;$echo "DESCRIPTION \"$libname\"" >> $objdir/$libname.def;$echo DATA >> $objdir/$libname.def;$echo " SINGLE NONSHARED" >> $objdir/$libname.def;$echo EXPORTS >> $objdir/$libname.def;emxexp$libobjs >> $objdir/$libname.def;$CC -Zdll -Zcrtdll -o $lib$libobjs $objdir/$libname.def'
old_archive_from_new_cmds='emximp -o $objdir/$libname.a $objdir/$libname.def'
;;
osf3* | osf4*)
allow_undefined_flag=' -expect_unresolved \*'
archive_cmds='$LD -shared${allow_undefined_flag} -o $lib -soname $soname -set_version $verstring$libobjs$deplibs'
hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
hardcode_libdir_separator=:
;;
sco3.2v5*)
archive_cmds='$LD -G -o $lib$libobjs'
hardcode_direct=yes
;;
solaris2*)
no_undefined_flag=' -z text'
archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib$libobjs'
hardcode_libdir_flag_spec='-R$libdir'
hardcode_shlibpath_var=no
# Solaris 2 before 2.5 hardcodes -L paths.
case "$host_os" in
solaris2.[0-4]*)
hardcode_minus_L=yes
;;
esac
;;
sunos4*)
if test "$with_gcc" = yes; then
archive_cmds='$CC -shared -o $lib$libobjs'
else
archive_cmds='$LD -assert pure-text -Bstatic -o $lib$libobjs'
fi
if test "$with_gnu_ld" = yes; then
export_dynamic_flag_spec='${wl}-export-dynamic'
fi
hardcode_libdir_flag_spec='-L$libdir'
hardcode_direct=yes
hardcode_minus_L=yes
hardcode_shlibpath_var=no
;;
uts4*)
archive_cmds='$LD -G -h $soname -o $lib$libobjs'
hardcode_libdir_flag_spec='-L$libdir'
hardcode_direct=no
hardcode_minus_L=no
hardcode_shlibpath_var=no
;;
*)
ld_shlibs=no
can_build_shared=no
;;
esac
fi
echo "$ac_t$ld_shlibs" 1>&6
if test -z "$NM"; then
echo $ac_n "checking for BSD-compatible nm... $ac_c" 1>&6
case "$NM" in
/* | [A-Za-z]:\\*) ;; # Let the user override the test with a path.
*)
IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
for ac_dir in /usr/ucb /usr/ccs/bin $PATH /bin; do
test -z "$ac_dir" && ac_dir=.
if test -f $ac_dir/nm; then
# Check to see if the nm accepts a BSD-compat flag.
# Adding the `sed 1q' prevents false positives on HP-UX, which says:
# nm: unknown option "B" ignored
if ($ac_dir/nm -B /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then
NM="$ac_dir/nm -B"
elif ($ac_dir/nm -p /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then
NM="$ac_dir/nm -p"
else
NM="$ac_dir/nm"
fi
break
fi
done
IFS="$ac_save_ifs"
test -z "$NM" && NM=nm
;;
esac
echo "$ac_t$NM" 1>&6
fi
# Check for command to grab the raw symbol name followed by C symbol from nm.
echo $ac_n "checking command to parse $NM output... $ac_c" 1>&6
# These are sane defaults that work on at least a few old systems.
# [They come from Ultrix. What could be older than Ultrix?!! ;)]
# Character class describing NM global symbol codes.
symcode='[BCDEGRSTU]'
# Regexp to match symbols that can be accessed directly from C.
sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
# Transform the above into a raw symbol and a C symbol.
symxfrm='\1 \1'
# Define system-specific variables.
case "$host_os" in
aix*)
symcode='[BCDTU]'
;;
irix*)
# Cannot use undefined symbols on IRIX because inlined functions mess us up.
symcode='[BCDEGRST]'
;;
solaris2*)
symcode='[BDTU]'
;;
esac
# If we're using GNU nm, then use its standard symbol codes.
if $NM -V 2>&1 | egrep '(GNU|with BFD)' > /dev/null; then
symcode='[ABCDGISTUW]'
fi
# Write the raw and C identifiers.
global_symbol_pipe="sed -n -e 's/^.* $symcode $sympat$/$symxfrm/p'"
# Check to see that the pipe works correctly.
pipe_works=no
$rm conftest*
cat > conftest.c <<EOF
#ifdef __cplusplus
extern "C" {
#endif
char nm_test_var;
void nm_test_func(){}
#ifdef __cplusplus
}
#endif
main(){nm_test_var='a';nm_test_func();return(0);}
EOF
echo "$progname:971: checking if global_symbol_pipe works" >&5
if { (eval echo $progname:972: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; } && test -s conftest.o; then
# Now try to grab the symbols.
nlist=conftest.nm
if { echo "$progname:975: eval \"$NM conftest.o | $global_symbol_pipe > $nlist\"" >&5; eval "$NM conftest.o | $global_symbol_pipe > $nlist 2>&5"; } && test -s "$nlist"; then
# Try sorting and uniquifying the output.
if sort "$nlist" | uniq > "$nlist"T; then
mv -f "$nlist"T "$nlist"
wcout=`wc "$nlist" 2>/dev/null`
count=`$echo "X$wcout" | $Xsed -e 's/^[ ]*\([0-9][0-9]*\).*$/\1/'`
(test "$count" -ge 0) 2>/dev/null || count=-1
else
rm -f "$nlist"T
count=-1
fi
# Make sure that we snagged all the symbols we need.
if egrep ' nm_test_var$' "$nlist" >/dev/null; then
if egrep ' nm_test_func$' "$nlist" >/dev/null; then
cat <<EOF > conftest.c
#ifdef __cplusplus
extern "C" {
#endif
EOF
# Now generate the symbol file.
sed 's/^.* \(.*\)$/extern char \1;/' < "$nlist" >> conftest.c
cat <<EOF >> conftest.c
#if defined (__STDC__) && __STDC__
# define __ptr_t void *
#else
# define __ptr_t char *
#endif
/* The number of symbols in dld_preloaded_symbols, -1 if unsorted. */
int dld_preloaded_symbol_count = $count;
/* The mapping between symbol names and symbols. */
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -