1*e146993eSDag-Erling Smørgravdnl $Id: aclocal.m4,v 1.8 2011/05/20 01:45:25 djm Exp $ 283d2307dSDag-Erling Smørgravdnl 383d2307dSDag-Erling Smørgravdnl OpenSSH-specific autoconf macros 483d2307dSDag-Erling Smørgravdnl 583d2307dSDag-Erling Smørgrav 6*e146993eSDag-Erling Smørgravdnl OSSH_CHECK_CFLAG_COMPILE(check_flag[, define_flag]) 7*e146993eSDag-Erling Smørgravdnl Check that $CC accepts a flag 'check_flag'. If it is supported append 8*e146993eSDag-Erling Smørgravdnl 'define_flag' to $CFLAGS. If 'define_flag' is not specified, then append 9*e146993eSDag-Erling Smørgravdnl 'check_flag'. 10*e146993eSDag-Erling SmørgravAC_DEFUN([OSSH_CHECK_CFLAG_COMPILE], [{ 11*e146993eSDag-Erling Smørgrav AC_MSG_CHECKING([if $CC supports $1]) 12*e146993eSDag-Erling Smørgrav saved_CFLAGS="$CFLAGS" 13*e146993eSDag-Erling Smørgrav CFLAGS="$CFLAGS $1" 14*e146993eSDag-Erling Smørgrav _define_flag="$2" 15*e146993eSDag-Erling Smørgrav test "x$_define_flag" = "x" && _define_flag="$1" 16*e146993eSDag-Erling Smørgrav AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])], 17*e146993eSDag-Erling Smørgrav [ AC_MSG_RESULT([yes]) 18*e146993eSDag-Erling Smørgrav CFLAGS="$saved_CFLAGS $_define_flag"], 19*e146993eSDag-Erling Smørgrav [ AC_MSG_RESULT([no]) 20*e146993eSDag-Erling Smørgrav CFLAGS="$saved_CFLAGS" ] 21*e146993eSDag-Erling Smørgrav ) 22*e146993eSDag-Erling Smørgrav}]) 23*e146993eSDag-Erling Smørgrav 2483d2307dSDag-Erling Smørgrav 2583d2307dSDag-Erling Smørgravdnl OSSH_CHECK_HEADER_FOR_FIELD(field, header, symbol) 2683d2307dSDag-Erling Smørgravdnl Does AC_EGREP_HEADER on 'header' for the string 'field' 2783d2307dSDag-Erling Smørgravdnl If found, set 'symbol' to be defined. Cache the result. 2883d2307dSDag-Erling Smørgravdnl TODO: This is not foolproof, better to compile and read from there 2983d2307dSDag-Erling SmørgravAC_DEFUN(OSSH_CHECK_HEADER_FOR_FIELD, [ 3083d2307dSDag-Erling Smørgrav# look for field '$1' in header '$2' 3183d2307dSDag-Erling Smørgrav dnl This strips characters illegal to m4 from the header filename 3283d2307dSDag-Erling Smørgrav ossh_safe=`echo "$2" | sed 'y%./+-%__p_%'` 3383d2307dSDag-Erling Smørgrav dnl 3483d2307dSDag-Erling Smørgrav ossh_varname="ossh_cv_$ossh_safe""_has_"$1 3583d2307dSDag-Erling Smørgrav AC_MSG_CHECKING(for $1 field in $2) 3683d2307dSDag-Erling Smørgrav AC_CACHE_VAL($ossh_varname, [ 3783d2307dSDag-Erling Smørgrav AC_EGREP_HEADER($1, $2, [ dnl 3883d2307dSDag-Erling Smørgrav eval "$ossh_varname=yes" dnl 3983d2307dSDag-Erling Smørgrav ], [ dnl 4083d2307dSDag-Erling Smørgrav eval "$ossh_varname=no" dnl 4183d2307dSDag-Erling Smørgrav ]) dnl 4283d2307dSDag-Erling Smørgrav ]) 4383d2307dSDag-Erling Smørgrav ossh_result=`eval 'echo $'"$ossh_varname"` 4483d2307dSDag-Erling Smørgrav if test -n "`echo $ossh_varname`"; then 4583d2307dSDag-Erling Smørgrav AC_MSG_RESULT($ossh_result) 4683d2307dSDag-Erling Smørgrav if test "x$ossh_result" = "xyes"; then 47021d409fSDag-Erling Smørgrav AC_DEFINE($3, 1, [Define if you have $1 in $2]) 4883d2307dSDag-Erling Smørgrav fi 4983d2307dSDag-Erling Smørgrav else 5083d2307dSDag-Erling Smørgrav AC_MSG_RESULT(no) 5183d2307dSDag-Erling Smørgrav fi 5283d2307dSDag-Erling Smørgrav]) 5383d2307dSDag-Erling Smørgrav 5483d2307dSDag-Erling Smørgravdnl Check for socklen_t: historically on BSD it is an int, and in 5583d2307dSDag-Erling Smørgravdnl POSIX 1g it is a type of its own, but some platforms use different 5683d2307dSDag-Erling Smørgravdnl types for the argument to getsockopt, getpeername, etc. So we 5783d2307dSDag-Erling Smørgravdnl have to test to find something that will work. 5883d2307dSDag-Erling SmørgravAC_DEFUN([TYPE_SOCKLEN_T], 5983d2307dSDag-Erling Smørgrav[ 6083d2307dSDag-Erling Smørgrav AC_CHECK_TYPE([socklen_t], ,[ 6183d2307dSDag-Erling Smørgrav AC_MSG_CHECKING([for socklen_t equivalent]) 6283d2307dSDag-Erling Smørgrav AC_CACHE_VAL([curl_cv_socklen_t_equiv], 6383d2307dSDag-Erling Smørgrav [ 6483d2307dSDag-Erling Smørgrav # Systems have either "struct sockaddr *" or 6583d2307dSDag-Erling Smørgrav # "void *" as the second argument to getpeername 6683d2307dSDag-Erling Smørgrav curl_cv_socklen_t_equiv= 6783d2307dSDag-Erling Smørgrav for arg2 in "struct sockaddr" void; do 6883d2307dSDag-Erling Smørgrav for t in int size_t unsigned long "unsigned long"; do 6983d2307dSDag-Erling Smørgrav AC_TRY_COMPILE([ 7083d2307dSDag-Erling Smørgrav #include <sys/types.h> 7183d2307dSDag-Erling Smørgrav #include <sys/socket.h> 7283d2307dSDag-Erling Smørgrav 7383d2307dSDag-Erling Smørgrav int getpeername (int, $arg2 *, $t *); 7483d2307dSDag-Erling Smørgrav ],[ 7583d2307dSDag-Erling Smørgrav $t len; 7683d2307dSDag-Erling Smørgrav getpeername(0,0,&len); 7783d2307dSDag-Erling Smørgrav ],[ 7883d2307dSDag-Erling Smørgrav curl_cv_socklen_t_equiv="$t" 7983d2307dSDag-Erling Smørgrav break 8083d2307dSDag-Erling Smørgrav ]) 8183d2307dSDag-Erling Smørgrav done 8283d2307dSDag-Erling Smørgrav done 8383d2307dSDag-Erling Smørgrav 8483d2307dSDag-Erling Smørgrav if test "x$curl_cv_socklen_t_equiv" = x; then 8583d2307dSDag-Erling Smørgrav AC_MSG_ERROR([Cannot find a type to use in place of socklen_t]) 8683d2307dSDag-Erling Smørgrav fi 8783d2307dSDag-Erling Smørgrav ]) 8883d2307dSDag-Erling Smørgrav AC_MSG_RESULT($curl_cv_socklen_t_equiv) 8983d2307dSDag-Erling Smørgrav AC_DEFINE_UNQUOTED(socklen_t, $curl_cv_socklen_t_equiv, 9083d2307dSDag-Erling Smørgrav [type to use in place of socklen_t if not defined])], 9183d2307dSDag-Erling Smørgrav [#include <sys/types.h> 9283d2307dSDag-Erling Smørgrav#include <sys/socket.h>]) 9383d2307dSDag-Erling Smørgrav]) 9483d2307dSDag-Erling Smørgrav 95