X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=trio%2Fconfigure.in;h=f1ed7659ccb25cd13900164b75a317739339f2f5;hb=ddfa475a70126d818fee10221edb5b0112cea374;hp=6783959b8e0385c4f914cfebfbea23e02fe6d5b0;hpb=13c27199231cbc2cc83969ada741b95be1cca4d3;p=~andy%2Ffetchmail

diff --git a/trio/configure.in b/trio/configure.in
index 6783959b..f1ed7659 100644
--- 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
@@ -17,29 +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"
-#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(VMS) || defined(__VMS)) && !defined(_CFE))
-# error "Option needed"
-#endif
-],ac_cv_ieee_option="-ieee",
-AC_TRY_COMPILE(,[
-#if !(defined(__alpha) && (defined(__GNUC__) && (defined(__osf__) || defined(__linux__))))
-# error "Option needed"
-#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