Add AC_CONFIG_HEADERS to configure.ac

In bootstrap.sh also call autoheader to create config.h.in with
the HAVE_... macros to put into config.h when running ./configure.

.gitignore

@@ -10,8 +10,14 @@ config.log
 config.status
 config.sub
 configure
+config.h
+config.h.in
+config.h.in~
 depcomp
+libtool
 ltmain.sh
 install-sh
 missing
+musl-obstack.pc
+stamp-h1
 m4/

bootstrap.sh

@@ -1,5 +1,6 @@
 #!/bin/sh
 libtoolize
 aclocal
+autoheader
 autoconf
 automake --add-missing

configure.ac

@@ -6,6 +6,7 @@ AC_INIT([obstack], [1.2], [pullmoll@t-online.de])
 
 AM_INIT_AUTOMAKE([1.16])
 AC_CONFIG_MACRO_DIR([m4])
+AC_CONFIG_HEADERS([config.h])
 
 AC_PROG_CC
 AC_PROG_LIBTOOL