add checks during configure for zlib and libjpeg, abort configure with error if not...

diff --git a/configure.in b/configure.in
index 3df878551df33043e7be24d49eb7386d28943767..4228883fd313b0a2bd66d82502010ae163e35e01 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -398,11 +398,13 @@ AC_ARG_ENABLE(timerfd-wrapper,
 AM_CONDITIONAL([ENABLE_TIMERFD_WRAPPER],[test "x$enable_timer_fd_wrapper" != "xno"])
 
 
-AC_CHECK_LIB(z, inflateReset, have_libz=yes, have_libz=no)
+AC_CHECK_LIB(z, inflateReset, have_libz=yes, AC_MSG_ERROR([no usable zlib; please install zlib devel package or equivalent]))
 if test "x$have_libz" = "xyes"  ; then
 APR_ADDTO(SWITCH_AM_LDFLAGS, -lz)
 fi
 
+AC_CHECK_LIB(jpeg, jpeg_std_error,, AC_MSG_ERROR([no usable libjpeg; please install libjpeg devel package or equivalent]))
+
 AC_CHECK_LIB(resolv, res_init, have_libresolv=yes, have_libresolv=no)
 if test "x$have_libresolv" = "xyes"  ; then
 APR_ADDTO(SWITCH_AM_LDFLAGS, -lresolv)