Use and install a config.h AC_CONFIG_HEADER that contains all AC_DEFINE results

.gitignore

@@ -6,6 +6,9 @@ autom4te.cache
 config.guess
 config.sub
 configure
+config.h.in
+config.h
+stamp-h1
 depcomp
 install-sh
 ltmain.sh

Makefile.am

@@ -11,6 +11,9 @@ CLEANFILES = Doxyfile
 BUILT_SOURCES = Android.mk
 MAINTAINERCLEANFILES = Android.mk
 
+config_includedir = $(ipseclibdir)/include
+nodist_config_include_HEADERS = config.h
+
 Android.mk :	Android.mk.in configure.in
 		sed \
 		-e "s:\@PACKAGE_VERSION\@:$(PACKAGE_VERSION):" \

autogen.sh

@@ -12,6 +12,7 @@ case "$LIBTOOLIZE" in
 		;;
 esac
 
+autoheader &&
 $LIBTOOLIZE --force &&
 aclocal &&
 automake -a &&

configure.in

@@ -19,6 +19,7 @@ dnl ===========================
 AC_INIT(strongSwan,5.0.0)
 AM_INIT_AUTOMAKE(tar-ustar)
 AC_CONFIG_MACRO_DIR([m4/config])
+AC_CONFIG_HEADERS([config.h])
 PKG_PROG_PKG_CONFIG
 
 dnl =================================
@@ -782,6 +783,8 @@ if test x$integrity_test = xtrue; then
 	)
 fi
 
+CFLAGS="$CFLAGS -include `pwd`/config.h"
+
 dnl ==============================================
 dnl  collect plugin list for strongSwan components
 dnl ==============================================

src/libstrongswan/.gitignore

@@ -1 +1,4 @@
 oid.[ch]
+config.h
+config.h.in
+stamp-h1