Obsoletion warning.

[~andy/fetchmail] / trio / configure.in

diff --git a/trio/configure.in b/trio/configure.in
index 212684d5fe454e96990bda6754800cccfc235c51..f1ed7659ccb25cd13900164b75a317739339f2f5 100644 (file)
--- a/trio/configure.in
+++ b/trio/configure.in
@@ -2,11 +2,13 @@ dnl
 dnl Configuration for trio
 dnl
 
-AC_INIT(triodef.h)
+AC_INIT
+AC_CONFIG_SRCDIR([triodef.h])
+AC_PREREQ(2.55) dnl autoconf 2.55 was released in 2002
 
 AC_PROG_CC
 ifdef([AC_PROG_CC_STDC], [AC_PROG_CC_STDC])
-AC_LANG_C
+AC_LANG([C])
 
 AC_PROG_INSTALL
 AC_PROG_RANLIB
@@ -17,32 +19,36 @@ dnl
 
 AC_MSG_CHECKING(for IEEE compilation options)
 AC_CACHE_VAL(ac_cv_ieee_option, [
-AC_TRY_COMPILE(,[
-#if !(defined(__alpha) && (defined(__DECC) || defined(__DECCXX) || (defined(__osf__) && defined(__LANGUAGE_C__))) && (defined(VMS) || defined(__VMS)))
-# error "Option needed"
-typedef int option_needed[-1];
-#endif
-],ac_cv_ieee_option="/IEEE_MODE=UNDERFLOW_TO_ZERO/FLOAT=IEEE",
-AC_TRY_COMPILE(,[
-#if !(defined(__alpha) && (defined(__DECC) || defined(__DECCXX) || (defined(__osf__) && defined(__LANGUAGE_C__) && !defined(__GNUC__))) && !(defined(VMS) || defined(__VMS)) && !defined(_CFE))
-# error "Option needed"
-typedef int option_needed[-1];
-#endif
-],ac_cv_ieee_option="-ieee",
-AC_TRY_COMPILE(,[
-#if !(defined(__alpha) && (defined(__GNUC__) && (defined(__osf__) || defined(__linux__))))
-# error "Option needed"
-typedef int option_needed[-1];
-#endif
-],ac_cv_ieee_option="-mieee",
-ac_cv_ieee_option="none"
-)
-)
-)
+  AC_COMPILE_IFELSE(AC_LANG_PROGRAM(,[[[
+    #if !(defined(__alpha) && (defined(__DECC) || defined(__DECCXX) || (defined(__osf__) && defined(__LANGUAGE_C__))) && (defined(VMS) || defined(__VMS)))
+    # error "Option needed"
+    typedef int option_needed[-1];
+    #endif
+    ]]]),
+    ac_cv_ieee_option="/IEEE_MODE=UNDERFLOW_TO_ZERO/FLOAT=IEEE",
+    AC_COMPILE_IFELSE(AC_LANG_PROGRAM(,[[[
+      #if !(defined(__alpha) && (defined(__DECC) || defined(__DECCXX) || (defined(__osf__) && defined(__LANGUAGE_C__) && !defined(__GNUC__))) && !(defined(VMS) || defined(__VMS)) && !defined(_CFE))
+      # error "Option needed"
+      typedef int option_needed[-1];
+      #endif
+      ]]]),
+      ac_cv_ieee_option="-ieee",
+      AC_COMPILE_IFELSE(AC_LANG_PROGRAM(,[[[
+       #if !(defined(__alpha) && (defined(__GNUC__) && (defined(__osf__) || defined(__linux__))))
+       # error "Option needed"
+       typedef int option_needed[-1];
+       #endif
+       ]]]),
+       ac_cv_ieee_option="-mieee",
+       ac_cv_ieee_option="none"
+      )
+    )
+  )
 ])
 AC_MSG_RESULT($ac_cv_ieee_option)
 if test $ac_cv_ieee_option != none; then
   CFLAGS="${CFLAGS} ${ac_cv_ieee_option}"
 fi
 
-AC_OUTPUT(Makefile)
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT