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|
# -*- ksh -*-
# See also perl 5.
AC_DEFUN(AC_SYS_SHAREDLIB,
[AC_REQUIRE([AC_PROG_CC])dnl
AC_MSG_CHECKING(for shared library support)
sharedlib_extension=so # right for almost everything
sharedlib_suffix='.$(sharedlib_version)'
sharedlib_cflags=
sharedlib_buildflags=
sharedlib_buildflags_gcc=
sharedlib_linkflags=
sharedlib_linkflags_gcc=
sharedlib_postinstall=
# We'll be changing some settings if gcc, below,
# but let's do the uname patterns only once.
case `(uname -a 2>&1) 2>/dev/null` in
FreeBSD*) # xx right uname?
# xx really need -DPIC in cflags?
# xx extension must be .so?
sharedlib_buildflags_gcc=-Wl,-Bshareable # xx must run ld?
;;
HP-UX*)
sharedlib_extension=sl
sharedlib_suffix=
sharedlib_cflags=+z
sharedlib_buildflags=-Wl,-b # xx must run ld?
sharedlib_postinstall="chmod a+x"
;;
IRIX*)
sharedlib_buildflags='-shared -no_unresolved \
-set_version sgi$(sharedlib_version) -soname $(sharedlib)'
sharedlib_linkflags='-rpath $(libdir)'
sharedlib_linkflags_gcc='-Wl,-rpath,$(libdir)'
;;
Linux*)
# sharedlib_buildflags_gcc='-shared -Wl,-soname,$(sharedlib)'
sharedlib_postinstall='ldconfig #'
sharedlib_linkflags='-Wl,-rpath,$(libdir)'
;;
OSF1*)
# xx run ld? link with -lc?
# version stuff not right, since old versions should also be
# passed to -set_version.
sharedlib_buildflags='-Wl,shared -set_version $(sharedlib_version)'
sharedlib_linkflags='-Wl,-rpath,$(libdir)'
;;
SunOS*4.*)
sharedlib_cflags=-PIC
sharedlib_linkflags='-L$(libdir)'
;;
SunOS*5.*)
sharedlib_cflags="-K pic"
sharedlib_buildflags='-G -z text -h $(sharedlib)'
sharedlib_linkflags='-R$(libdir)'
;;
esac
# If GCC, things are usually simpler.
if test "$GCC" = yes; then
sharedlib_cflags=-fPIC # should we ever use -fpic?
if test -n "$sharedlib_buildflags_gcc"; then
sharedlib_buildflags=$sharedlib_buildflags_gcc
else
sharedlib_buildflags=-shared
fi
if test -n "$sharedlib_linkflags_gcc"; then
sharedlib_linkflags=$sharedlib_linkflags_gcc
fi
fi
test -z "$sharedlib_postinstall" && sharedlib_postinstall=:
AC_MSG_RESULT($sharedlib_cflags/$sharedlib_buildflags/$sharedlib_linkflags)
AC_SUBST(sharedlib_extension)dnl
AC_SUBST(sharedlib_suffix)dnl
AC_SUBST(sharedlib_cflags)dnl
AC_SUBST(sharedlib_buildflags)dnl
AC_SUBST(sharedlib_linkflags)dnl
AC_SUBST(sharedlib_postinstall)dnl
])
|
