commit a4d3828cfd09e16d5933e6cb763bc76cd3259035 Author: Robert Hogan <robert@webkit.org> Date: Tue Jul 6 21:50:29 2010 +0100 Improve compile-time detection of the res* family of system calls Some platforms need to explicitly include resolv.h so cater for that. Thanks to SwissTorExit for reporting and debugging assistance. --- configure.in | 19 ++++++++++++++----- 1 files changed, 14 insertions(+), 5 deletions(-) diff --git a/configure.in b/configure.in index b447fe3..04703e4 100644 --- a/configure.in +++ b/configure.in @@ -129,11 +129,20 @@ if test "$tempdso" = "no"; then "Check your system for libc.so and/or libdl.so.")) fi -AC_CHECK_LIB(resolv, res_query, [ tempres="yes" ],tempres="no") -if test "$tempres" = "no"; then - AC_CHECK_LIB(c, res_query,,AC_MSG_ERROR("res_query() not found in libc or libresolve." \ - "Check your system for libc.so and/or libresolve.so.")) -fi +AC_CHECK_FUNC(res_query, , + [AC_CHECK_LIB(resolv, res_query, [], + [ save_libs="$LIBS" + LIBS="-lresolv $LIBS" + AC_MSG_CHECKING([for res_query in -lresolv (alternate version)]) + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[#include <resolv.h>]], [[res_query(0,0,0,0,0)]])], + [ AC_MSG_RESULT(yes) ], + [ AC_MSG_RESULT(no) + LIBS="$save_libs" + AC_CHECK_LIB(resolv, res_query, + [], [ AC_MSG_ERROR(res_query not found in libc or libresolve. Check your system for libc.so and/or libresolve.so.) ] ) ] ) ] ) + ] +) AC_DEFINE([SUPPORT_RES_API],[],[Support the res_query family of calls])