Re: question regarding AC_CHECK_LIB

[Noah Misch]

> krishna wrote:

> >1.How do i specify the additional paths which AC_CHECK_LIB should check?

This is the typical idiom:

save_LDFLAGS="$LDFLAGS"
LDFLAGS="-L/dir $LDFLAGS"
AC_CHECK_LIB(...)
LDFLAGS="$save_LDFLAGS"

You could wrap it in a macro:

# AC_VAR_EXCURSION(VAR, VALUE, EXPRESSION)
# ----------------------------------------
# Set VAR, a shell variable, to VALUE, and expand EXPRESSION.  Then, restore VAR
# to its original value.
AC_DEFUN([AC_VAR_EXCURSION],
[ave_save_$1="$$1"
$1="$2"
$3
$1="$ave_save_$1"])

and then:

AC_VAR_EXCURSION([LDFLAGS], [-L/dir $LDFLAGS], [AC_CHECK_LIB(...)])

> >2.Morever by default AC_CHECK_LIB looks for dynamic libraries.How do I 
> >specify that I should look for a static library.

AC_CHECK_LIB looks for both static and dynamic libraries.  If you wish to find
only static libraries, you could determine the compiler flag(s) that do what
`-static' does for gcc and add them to LDFLAGS for the AC_CHECK_LIB.  It is
probably easiest to harness Libtool for that.