diff options
Diffstat (limited to 'ares/acinclude.m4')
| -rw-r--r-- | ares/acinclude.m4 | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/ares/acinclude.m4 b/ares/acinclude.m4 index 790d1c74b..8cadce163 100644 --- a/ares/acinclude.m4 +++ b/ares/acinclude.m4 @@ -1737,6 +1737,168 @@ AC_DEFUN([CURL_CHECK_LIBS_CLOCK_GETTIME_MONOTONIC], [ ]) +dnl CARES_DEFINE_UNQUOTED (VARIABLE, [VALUE]) +dnl ------------------------------------------------- +dnl Like AC_DEFINE_UNQUOTED this macro will define a C preprocessor +dnl symbol that can be further used in custom template configuration +dnl files. This macro, unlike AC_DEFINE_UNQUOTED, does not use a third +dnl argument for the description. Symbol definitions done with this +dnl macro are intended to be exclusively used in handcrafted *.h.in +dnl template files. Contrary to what AC_DEFINE_UNQUOTED does, this one +dnl prevents autoheader generation and insertion of symbol template +dnl stub and definition into the first configuration header file. Do +dnl not use this macro as a replacement for AC_DEFINE_UNQUOTED, each +dnl one serves different functional needs. + +AC_DEFUN([CARES_DEFINE_UNQUOTED], [ +cat >>confdefs.h <<_EOF +[@%:@define] $1 ifelse($#, 2, [$2], 1) +_EOF +]) + + +dnl CARES_CONFIGURE_LONG +dnl ------------------------------------------------- +dnl Find out the size of long as reported by sizeof() and define +dnl CARES_SIZEOF_LONG as appropriate to be used in template file +dnl ares_build.h.in to properly configure the library. +dnl The size of long is a build time characteristic and as such +dnl must be recorded in ares_build.h + +AC_DEFUN([CARES_CONFIGURE_LONG], [ + if test -z "$ac_cv_sizeof_long" || + test "$ac_cv_sizeof_long" -eq "0"; then + AC_MSG_ERROR([cannot find out size of long.]) + fi + CARES_DEFINE_UNQUOTED([CARES_SIZEOF_LONG], [$ac_cv_sizeof_long]) +]) + + +dnl CARES_CONFIGURE_ARES_SOCKLEN_T +dnl ------------------------------------------------- +dnl Find out suitable ares_socklen_t data type definition and size, making +dnl appropriate definitions for template file ares_build.h.in +dnl to properly configure and use the library. +dnl +dnl The need for the ares_socklen_t definition arises mainly to properly +dnl interface HP-UX systems which on one hand have a typedef'ed socklen_t +dnl data type which is 32 or 64-Bit wide depending on the data model being +dnl used, and that on the other hand is only actually used when interfacing +dnl the X/Open sockets provided in the xnet library. + +AC_DEFUN([CARES_CONFIGURE_ARES_SOCKLEN_T], [ + AC_REQUIRE([CARES_INCLUDES_WS2TCPIP])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_PREPROCESS_CALLCONV])dnl + # + AC_MSG_CHECKING([for ares_socklen_t data type]) + cares_typeof_ares_socklen_t="unknown" + for arg1 in int SOCKET; do + for arg2 in 'struct sockaddr' void; do + for t in socklen_t int size_t 'unsigned int' long 'unsigned long' void; do + if test "$cares_typeof_ares_socklen_t" = "unknown"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_preprocess_callconv + extern int FUNCALLCONV getpeername($arg1, $arg2 *, $t *); + ]],[[ + $t *lenptr = 0; + if(0 != getpeername(0, 0, lenptr)) + return 1; + ]]) + ],[ + cares_typeof_ares_socklen_t="$t" + ]) + fi + done + done + done + for t in socklen_t int; do + if test "$cares_typeof_ares_socklen_t" = "void"; then + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_sys_socket + typedef $t ares_socklen_t; + ]],[[ + ares_socklen_t dummy; + ]]) + ],[ + cares_typeof_ares_socklen_t="$t" + ]) + fi + done + AC_MSG_RESULT([$cares_typeof_ares_socklen_t]) + if test "$cares_typeof_ares_socklen_t" = "void" || + test "$cares_typeof_ares_socklen_t" = "unknown"; then + AC_MSG_ERROR([cannot find data type for ares_socklen_t.]) + fi + # + AC_MSG_CHECKING([size of ares_socklen_t]) + cares_sizeof_ares_socklen_t="unknown" + cares_pull_headers_socklen_t="unknown" + if test "$ac_cv_header_ws2tcpip_h" = "yes"; then + tst_pull_header_checks='none ws2tcpip' + tst_size_checks='4' + else + tst_pull_header_checks='none systypes syssocket' + tst_size_checks='4 8 2' + fi + for tst_size in $tst_size_checks; do + for tst_pull_headers in $tst_pull_header_checks; do + if test "$cares_sizeof_ares_socklen_t" = "unknown"; then + case $tst_pull_headers in + ws2tcpip) + tmp_includes="$cares_includes_ws2tcpip" + ;; + systypes) + tmp_includes="$cares_includes_sys_types" + ;; + syssocket) + tmp_includes="$cares_includes_sys_socket" + ;; + *) + tmp_includes="" + ;; + esac + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $tmp_includes + typedef $cares_typeof_ares_socklen_t ares_socklen_t; + typedef char dummy_arr[sizeof(ares_socklen_t) == $tst_size ? 1 : -1]; + ]],[[ + ares_socklen_t dummy; + ]]) + ],[ + cares_sizeof_ares_socklen_t="$tst_size" + cares_pull_headers_socklen_t="$tst_pull_headers" + ]) + fi + done + done + AC_MSG_RESULT([$cares_sizeof_ares_socklen_t]) + if test "$cares_sizeof_ares_socklen_t" = "unknown"; then + AC_MSG_ERROR([cannot find out size of ares_socklen_t.]) + fi + # + case $cares_pull_headers_socklen_t in + ws2tcpip) + CARES_DEFINE_UNQUOTED([CARES_PULL_WS2TCPIP_H]) + ;; + systypes) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_TYPES_H]) + ;; + syssocket) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_TYPES_H]) + CARES_DEFINE_UNQUOTED([CARES_PULL_SYS_SOCKET_H]) + ;; + esac + CARES_DEFINE_UNQUOTED([CARES_TYPEOF_ARES_SOCKLEN_T], [$cares_typeof_ares_socklen_t]) + CARES_DEFINE_UNQUOTED([CARES_SIZEOF_ARES_SOCKLEN_T], [$cares_sizeof_ares_socklen_t]) +]) + + dnl This macro determines if the specified struct exists in the specified file dnl Syntax: dnl CARES_CHECK_STRUCT(headers, struct name, if found, [if not found]) |