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-rw-r--r--acinclude.m447
1 files changed, 47 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644
index 0000000..c14986f
--- /dev/null
+++ b/acinclude.m4
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+dnl CHECK_ENUM and GET_DEFINE autoconf macros are
+dnl Copyright 2004,2006 Bernhard R. Link
+dnl and hereby in the public domain
+# Check for an enum, which seem to be forgotten in autoconf,
+# as this can neighter be checked with cpp, nor is it a symbol
+m4_define([CHECK_ENUM],
+[AS_VAR_PUSHDEF([check_Enum], [rr_cv_check_enum_$1])dnl
+AC_CACHE_CHECK([for $1 in $2], check_Enum,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT([$5])
+@%:@include <$2>],
+[ if( $1 == 0 )
+ return 0;
+])],
+ [AS_VAR_SET(check_Enum, yes)],
+ [AS_VAR_SET(check_Enum, no)])])
+AS_IF([test AS_VAR_GET(check_Enum) = yes], [$3], [$4])[]dnl
+AS_VAR_POPDEF([check_Enum])dnl
+])dnl
+# extract the value of a #define from a header
+m4_define([GET_DEFINE],
+[AC_LANG_PREPROC_REQUIRE()dnl
+AS_VAR_PUSHDEF(get_Define, [rr_cv_get_define_$1])dnl
+AC_CACHE_CHECK([for $1], get_Define,
+[dnl
+ m4_ifvaln([$2],[dnl
+ echo "#include <$2>" > conftest.$ac_ext
+ echo "$1" >> conftest.$ac_ext
+ ],[dnl
+ echo "$1" > conftest.$ac_ext
+ ])
+ if _AC_EVAL_STDERR([$ac_cpp conftest.$ac_ext >conftest.out]) >/dev/null; then
+ if test -s conftest.err; then
+ AS_VAR_SET(get_Define, $1)
+ else
+ AS_VAR_SET(get_Define, "$(tail -1 conftest.out)")
+ fi
+ else
+ AS_VAR_SET(get_Define, $1)
+ fi
+ rm -f conftest.err conftest.out conftest.$ac_ext
+])
+TMP_GET_DEFINE=AS_VAR_GET(get_Define)
+TMP_GET_DEFINE=${TMP_GET_DEFINE% }
+TMP_GET_DEFINE=${TMP_GET_DEFINE% }
+AS_IF([test "$TMP_GET_DEFINE" = $1], [$3], [$1="$TMP_GET_DEFINE"])[]dnl
+AS_VAR_POPDEF([get_Define])dnl
+])dnl GET_DEFINE