| 1 | dnl $Id: aclocal.m4,v 1.1.1.2 2002-02-13 00:07:55 zacheiss Exp $ |
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| 2 | dnl |
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| 3 | dnl OpenSSH-specific autoconf macros |
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| 4 | dnl |
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| 5 | |
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| 6 | |
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| 7 | dnl OSSH_CHECK_HEADER_FOR_FIELD(field, header, symbol) |
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| 8 | dnl Does AC_EGREP_HEADER on 'header' for the string 'field' |
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| 9 | dnl If found, set 'symbol' to be defined. Cache the result. |
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| 10 | dnl TODO: This is not foolproof, better to compile and read from there |
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| 11 | AC_DEFUN(OSSH_CHECK_HEADER_FOR_FIELD, [ |
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| 12 | # look for field '$1' in header '$2' |
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| 13 | dnl This strips characters illegal to m4 from the header filename |
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| 14 | ossh_safe=`echo "$2" | sed 'y%./+-%__p_%'` |
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| 15 | dnl |
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| 16 | ossh_varname="ossh_cv_$ossh_safe""_has_"$1 |
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| 17 | AC_MSG_CHECKING(for $1 field in $2) |
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| 18 | AC_CACHE_VAL($ossh_varname, [ |
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| 19 | AC_EGREP_HEADER($1, $2, [ dnl |
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| 20 | eval "$ossh_varname=yes" dnl |
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| 21 | ], [ dnl |
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| 22 | eval "$ossh_varname=no" dnl |
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| 23 | ]) dnl |
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| 24 | ]) |
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| 25 | ossh_result=`eval 'echo $'"$ossh_varname"` |
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| 26 | if test -n "`echo $ossh_varname`"; then |
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| 27 | AC_MSG_RESULT($ossh_result) |
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| 28 | if test "x$ossh_result" = "xyes"; then |
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| 29 | AC_DEFINE($3) |
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| 30 | fi |
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| 31 | else |
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| 32 | AC_MSG_RESULT(no) |
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| 33 | fi |
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| 34 | ]) |
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| 35 | |
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| 36 | dnl OSSH_PATH_ENTROPY_PROG(variablename, command): |
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| 37 | dnl Tidiness function, sets 'undef' if not found, and does the AC_SUBST |
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| 38 | AC_DEFUN(OSSH_PATH_ENTROPY_PROG, [ |
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| 39 | AC_PATH_PROG($1, $2) |
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| 40 | if test -z "[$]$1" ; then |
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| 41 | $1="undef" |
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| 42 | fi |
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| 43 | AC_SUBST($1) |
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| 44 | ]) |
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| 45 | |
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| 46 | dnl Check for socklen_t: historically on BSD it is an int, and in |
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| 47 | dnl POSIX 1g it is a type of its own, but some platforms use different |
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| 48 | dnl types for the argument to getsockopt, getpeername, etc. So we |
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| 49 | dnl have to test to find something that will work. |
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| 50 | AC_DEFUN([TYPE_SOCKLEN_T], |
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| 51 | [ |
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| 52 | AC_CHECK_TYPE([socklen_t], ,[ |
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| 53 | AC_MSG_CHECKING([for socklen_t equivalent]) |
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| 54 | AC_CACHE_VAL([curl_cv_socklen_t_equiv], |
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| 55 | [ |
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| 56 | # Systems have either "struct sockaddr *" or |
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| 57 | # "void *" as the second argument to getpeername |
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| 58 | curl_cv_socklen_t_equiv= |
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| 59 | for arg2 in "struct sockaddr" void; do |
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| 60 | for t in int size_t unsigned long "unsigned long"; do |
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| 61 | AC_TRY_COMPILE([ |
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| 62 | #include <sys/types.h> |
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| 63 | #include <sys/socket.h> |
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| 64 | |
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| 65 | int getpeername (int, $arg2 *, $t *); |
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| 66 | ],[ |
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| 67 | $t len; |
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| 68 | getpeername(0,0,&len); |
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| 69 | ],[ |
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| 70 | curl_cv_socklen_t_equiv="$t" |
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| 71 | break |
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| 72 | ]) |
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| 73 | done |
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| 74 | done |
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| 75 | |
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| 76 | if test "x$curl_cv_socklen_t_equiv" = x; then |
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| 77 | AC_MSG_ERROR([Cannot find a type to use in place of socklen_t]) |
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| 78 | fi |
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| 79 | ]) |
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| 80 | AC_MSG_RESULT($curl_cv_socklen_t_equiv) |
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| 81 | AC_DEFINE_UNQUOTED(socklen_t, $curl_cv_socklen_t_equiv, |
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| 82 | [type to use in place of socklen_t if not defined])], |
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| 83 | [#include <sys/types.h> |
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| 84 | #include <sys/socket.h>]) |
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| 85 | ]) |
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| 86 | |
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