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AC_DEFUN([DOVECOT_WANT_BZLIB], [
AS_IF([test "$want_bzlib" != "no"], [
AC_CHECK_HEADER(bzlib.h, [
AC_CHECK_LIB(bz2, BZ2_bzdopen, [
have_bzlib=yes
have_compress_lib=yes
AC_DEFINE(HAVE_BZLIB,, [Define if you have bzlib library])
COMPRESS_LIBS="$COMPRESS_LIBS -lbz2"
], [
AS_IF([test "$want_bzlib" = "yes"], [
AC_MSG_ERROR(cannot build with bzlib support: libbz2 not found)
])
])
], [
AS_IF([test "$want_bzlib" = "yes"], [
AC_MSG_ERROR(cannot build with bzlib support: bzlib.h not found)
])
])
])
])
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