Cleaned up the configuration and build system quite a bit

[doldaconnect.git] / acinclude.m4

diff --git a/acinclude.m4 b/acinclude.m4
new file mode 100644 (file)
index 0000000..714a850
--- /dev/null
+++ b/acinclude.m4
@@ -0,0 +1,59 @@
+AC_DEFUN([DOLDA_AC_GROUP],
+[AC_MSG_NOTICE([ -- $1 -- ])])
+
+m4_defun([_DOLDA_PKG_LOOP],[dnl
+if test -z "$[]$1"; then
+       $2
+fi
+ifelse(m4_eval([$# > 2]), 1, [_DOLDA_PKG_LOOP($1, m4_shift(m4_shift($@)))])
+])
+
+# DOLDA_PKG(VARIABLE-NAME, COMMANDS...)
+#
+# Evaluate COMMANDS in sequence as long as ${VARIABLE-NAME} is empty
+
+AC_DEFUN([DOLDA_PKG],[dnl
+$1=""
+_DOLDA_PKG_LOOP($1, m4_shift($@))
+if test "$[]$1" != no; then $1=yes; fi
+])
+
+# DOLDA_CHECK_HEADER(FILE, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND,
+#       [EXTRA-CFLAGS])
+#
+# Augmented version of AC_CHECK_HEADER that overrides CPPFLAGS
+
+AC_DEFUN([DOLDA_CHECK_HEADER],[dnl
+cpp_bak="$CPPFLAGS"
+ifelse([$4], , , [CPPFLAGS="$CPPFLAGS $4"])
+AC_CHECK_HEADER($1, $2, $3)
+CPPFLAGS="$cpp_bak"
+])
+
+# DOLDA_ENABLE(NAME, HELP, DEFAULT, DEPS)
+#
+# DEPS is a space-separated listing of required variables that must be
+# `yes'
+
+AC_DEFUN([DOLDA_ENABLE],[dnl
+AC_ARG_ENABLE([$1], [$2])
+if test "[$enable_][$1]" = yes; then
+       for var in [$4]; do
+               if test "${!var}" != yes; then
+                       AC_MSG_ERROR([*** cannot enable $1 without $var])
+               fi
+       done
+else
+       ifelse([$3], yes, [dnl
+       [enable_][$1]=yes
+       for var in [$4]; do
+               if test "${!var}" != yes; then
+                       [enable_][$1]=no
+                       break
+               fi
+       done
+], [dnl
+       [enable_][$1]=no
+])
+fi
+])