path: root/aclocal.m4
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authorTanaka Akira <akr@users.sourceforge.net>1999-04-15 18:05:35 +0000
committerTanaka Akira <akr@users.sourceforge.net>1999-04-15 18:05:35 +0000
commitc175751b501a3a4cb40ad4787340a597ea769be4 (patch)
treef5cd9e9bf7dbfb5b91569181f260965c0a3cb8ad /aclocal.m4
Initial revision
Diffstat (limited to 'aclocal.m4')
1 files changed, 52 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4
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+# Local additions to Autoconf macros.
+# Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+# Francois Pinard <pinard@iro.umontreal.ca>, 1992.
+# @defmac fp_PROG_CC_STDC
+# @maindex PROG_CC_STDC
+# @ovindex CC
+# If the C compiler in not in ANSI C mode by default, try to add an option
+# to output variable @code{CC} to make it so. This macro tries various
+# options that select ANSI C on some system or another. It considers the
+# compiler to be in ANSI C mode if it defines @code{__STDC__} to 1 and
+# handles function prototypes correctly.
+# If you use this macro, you should check after calling it whether the C
+# compiler has been set to accept ANSI C; if not, the shell variable
+# @code{fp_cv_prog_cc_stdc} is set to @samp{no}. If you wrote your source
+# code in ANSI C, you can make an un-ANSIfied copy of it by using the
+# program @code{ansi2knr}, which comes with Ghostscript.
+# @end defmac
+[AC_CACHE_CHECK(for ${CC-cc} option to accept ANSI C,
+# Don't try gcc -ansi; that turns off useful extensions and
+# breaks some systems' header files.
+# AIX -qlanglvl=ansi
+# Ultrix and OSF/1 -std1
+# SVR4 -Xc
+for ac_arg in "" -qlanglvl=ansi -std1 "-Aa -D_HPUX_SOURCE" -Xc
+ CFLAGS="$ac_save_CFLAGS $ac_arg"
+[#ifndef __STDC__
+choke me
+], [int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};],
+[fp_cv_prog_cc_stdc="$ac_arg"; break])
+case "x$fp_cv_prog_cc_stdc" in
+ x|xno) ;;
+ *) CC="$CC $fp_cv_prog_cc_stdc" ;;
+builtin(include, aczsh.m4)