summaryrefslogtreecommitdiffstats
path: root/m4/ax_func_getaddrinfo.m4
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--m4/ax_func_getaddrinfo.m470
1 files changed, 70 insertions, 0 deletions
diff --git a/m4/ax_func_getaddrinfo.m4 b/m4/ax_func_getaddrinfo.m4
new file mode 100644
index 0000000..de3301b
--- /dev/null
+++ b/m4/ax_func_getaddrinfo.m4
@@ -0,0 +1,70 @@
+#
+# SYNOPSIS
+#
+# AX_FUNC_GETADDRINFO
+#
+# DESCRIPTION
+#
+# Checks for the getaddrinfo function in the standard C library,
+# as well as the socket and inet libraries, if they are present.
+# If extra libraries are required, they are added to LIBS.
+# If no getaddrinfo function is found, it is added to LIBOBJS.
+# Note: Tru64 UNIX contains two versions of getaddrinfo and we must
+# include netdb.h to get the proper definition.
+#
+# LICENSE
+#
+# Placed in the public domain by Todd C. Miller on November 20, 2013.
+#
+
+AC_DEFUN([AX_FUNC_GETADDRINFO],
+[AC_MSG_CHECKING(for getaddrinfo)
+AC_CACHE_VAL(ax_cv_func_getaddrinfo,
+[AC_LINK_IFELSE([AC_LANG_SOURCE([[#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+int main() { return getaddrinfo(0, 0, 0, 0); }]])], [ax_cv_func_getaddrinfo=yes], [ax_cv_func_getaddrinfo=no])])
+AC_MSG_RESULT([$ax_cv_func_getaddrinfo])
+if test X"$ax_cv_func_getaddrinfo" = X"yes"; then
+ AC_DEFINE(HAVE_GETADDRINFO, 1, [Define to 1 if you have the `getaddrinfo' function.])
+else
+ # Not found in libc, check libsocket and libinet
+ _found=no
+ for _libs in "-lsocket" "-linet" "-lsocket -lnsl"; do
+ _cv="ax_cv_lib_getaddrinfo`echo \"$_libs\"|sed -e 's/-l/_/g' -e 's/ *//g'`"
+ AC_MSG_CHECKING([for getaddrinfo in $_libs])
+ AC_CACHE_VAL([$_cv], [
+ _nlibs=
+ for _l in $_libs; do
+ case "$LIBS" in
+ *"$_l"*) ;;
+ *) _nlibs="$_nlibs $_l";;
+ esac
+ done
+ _libs="${_nlibs# }"
+ if test -z "$_libs"; then
+ # No new libs to check
+ eval $_cv=no
+ else
+ AX_FUNC_GETADDRINFO_OLIBS="$LIBS"
+ LIBS="$LIBS $_libs"
+ AC_LINK_IFELSE([AC_LANG_SOURCE([[#include <sys/types.h>
+ #include <sys/socket.h>
+ #include <netdb.h>
+ int main() { return getaddrinfo(0, 0, 0, 0); }]])], [eval $_cv=yes], [eval $_cv=no])
+ LIBS="$AX_FUNC_GETADDRINFO_OLIBS"
+ fi
+ ])
+ if eval test \$$_cv = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_GETADDRINFO)
+ test -n "$_libs" && LIBS="$LIBS $_libs"
+ break
+ fi
+ AC_MSG_RESULT([no])
+ done
+ if eval test \$$_cv != "yes"; then
+ AC_LIBOBJ(getaddrinfo)
+ fi
+fi
+])