CMake: Fix dependency chain between avrdude.conf.in and avrdude.conf

src/configure.cmake

@@ -0,0 +1,35 @@
+#
+# configure.cmake - autoconf like multi-line configure
+# Copyright (C) 2022 Marius Greuel
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# Do a multi-line replace based on @<OPTION>_BEGIN@ and @<OPTION>_END@ tags.
+macro(configure_option option)
+    if(${${option}})
+        string(REGEX REPLACE "(.*)@${option}_BEGIN@(.*)@${option}_END@(.*)" "\\1\\2\\3" CONTENTS "${CONTENTS}")
+    else()
+        string(REGEX REPLACE "(.*)@${option}_BEGIN@(.*)@${option}_END@(.*)" "\\1\\3" CONTENTS "${CONTENTS}")
+    endif()
+endmacro()
+
+# Perform autoconf like multi-line configure
+file(READ avrdude.conf.in CONTENTS)
+configure_option(HAVE_PARPORT)
+configure_option(HAVE_LINUXSPI)
+configure_option(HAVE_LINUXGPIO)
+file(WRITE avrdude.conf.in "${CONTENTS}")
+
+configure_file(avrdude.conf.in avrdude.conf)