[Pspp-cvs] pspp configure.ac acinclude.m4 ChangeLog

[Ben Pfaff]

CVSROOT:        /cvsroot/pspp
Module name:    pspp
Branch:         
Changes by:     Ben Pfaff <address@hidden>      06/03/30 23:51:01

Modified files:
        .              : configure.ac acinclude.m4 ChangeLog 

Log message:
        Use -Wdeclaration-after-statement if available.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/pspp/pspp/configure.ac.diff?tr1=1.41&tr2=1.42&r1=text&r2=text
http://cvs.savannah.gnu.org/viewcvs/pspp/pspp/acinclude.m4.diff?tr1=1.5&tr2=1.6&r1=text&r2=text
http://cvs.savannah.gnu.org/viewcvs/pspp/pspp/ChangeLog.diff?tr1=1.47&tr2=1.48&r1=text&r2=text

Patches:
Index: pspp/ChangeLog
diff -u pspp/ChangeLog:1.47 pspp/ChangeLog:1.48
--- pspp/ChangeLog:1.47 Tue Mar 21 00:33:05 2006
+++ pspp/ChangeLog      Thu Mar 30 23:51:01 2006
@@ -1,3 +1,11 @@
+Thu Mar 30 15:50:05 2006  Ben Pfaff  <address@hidden>
+
+       * Smake: Enable -Wdeclaration-after-statement warning if
+       available.
+
+       * acinclude.m4: Add macro for checking whether a warning is
+       supported.
+
 Mon Mar 20 16:32:11 2006  Ben Pfaff  <address@hidden>
 
        * Smake: Require "unistd" gnulib module.  Removed tests for
Index: pspp/acinclude.m4
diff -u pspp/acinclude.m4:1.5 pspp/acinclude.m4:1.6
--- pspp/acinclude.m4:1.5       Sat Mar  4 20:38:51 2006
+++ pspp/acinclude.m4   Thu Mar 30 23:51:01 2006
@@ -3,6 +3,22 @@
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
+dnl Check whether a warning flag is accepted.
+dnl If so, add it to CFLAGS.
+dnl Example: PSPP_ENABLE_WARNING(-Wdeclaration-after-statement)
+AC_DEFUN([PSPP_ENABLE_WARNING],
+[
+  m4_define([pspp_cv_name], [pspp_cv_[]m4_translit([$1], [-], [_])])dnl
+  AC_CACHE_CHECK([whether $CC accepts $1], [pspp_cv_name], 
+    [pspp_save_CFLAGS="$CFLAGS"
+     CFLAGS="$CFLAGS $1"
+     AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,)], [pspp_cv_name[]=yes], 
[pspp_cv_name[]=no])
+     CFLAGS="$pspp_save_CFLAGS"])
+  if test $pspp_cv_name = yes; then
+    CFLAGS="$CFLAGS $1"
+  fi
+])
+
 dnl Check for readline and history libraries.
 
 dnl Modified for PSPP by Ben Pfaff, based on readline.m4 serial 3 from
Index: pspp/configure.ac
diff -u pspp/configure.ac:1.41 pspp/configure.ac:1.42
--- pspp/configure.ac:1.41      Fri Mar 17 00:41:57 2006
+++ pspp/configure.ac   Thu Mar 30 23:51:01 2006
@@ -1,4 +1,4 @@
-0dnl Process this file with autoconf to produce a configure script.
+dnl Process this file with autoconf to produce a configure script.
 
 dnl Initialize.
 AX_PREREQ(2.57)
@@ -13,6 +13,8 @@
 AC_PROG_RANLIB
 gl_EARLY
 
+PSPP_ENABLE_WARNING(-Wdeclaration-after-statement)
+
 AM_CONDITIONAL(cc_is_gcc, test x"$GCC" = x"yes" )