build: Insist on m4 being installed.

[paraslash.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 2b2f2966b980bb6169c9501ce77e1ccaf830b0aa..2e4b42ceb064ada1fceda9cfbf88ac5f15685ea8 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -65,26 +65,16 @@ AC_DEFUN([LIB_SUBST_FLAGS], [
        AC_SUBST($1_ldflags)
 ])
 
-AC_PATH_PROG(UNAMEPATH, uname, no)
-if test "$UNAMEPATH" = "no"; then
-       AC_MSG_ERROR(unable to determine system type)
-fi
-AC_MSG_CHECKING(os type)
-OSTYPE="`$UNAMEPATH -s`"
-AC_MSG_RESULT("$OSTYPE")
-
-if test "$OSTYPE" = "SunOS"; then
-       # needed on SunOS for socket magic
-       arch_cppflags="-D_XOPEN_SOURCE=500 -D__EXTENSIONS__"
-       AC_SUBST(arch_cppflags)
-fi
-
 AC_C_BIGENDIAN()
 
 AC_PATH_PROG([GENGETOPT], [gengetopt])
 test -z "$GENGETOPT" && AC_MSG_ERROR(
        [gengetopt is required to build this package])
 
+AC_PATH_PROG([M4], [m4])
+test -z "$M4" && AC_MSG_ERROR(
+       [The m4 macro processor is required to build this package])
+
 AC_PATH_PROG([HELP2MAN], [help2man])
 test -z "$HELP2MAN" && AC_MSG_ERROR(
        [help2man is required to build this package])