switch the build system to waf

This commit adds a new build system based on waf. configure and Makefile
are deprecated effective immediately and someday in the future they will be
removed (they are still available by running ./old-configure).

You can find how the choice for waf came to be in `DOCS/waf-buildsystem.rst`.
TL;DR: we couldn't get the same level of abstraction and customization with
other build systems we tried (CMake and autotools).

For guidance on how to build the software now, take a look at README.md
and the cross compilation guide.

CREDITS:
This is a squash of ~250 commits. Some of them are not by me, so here is the
deserved attribution:

 - @wm4 contributed some Windows fixes, renamed configure to old-configure
   and contributed to the bootstrap script. Also, GNU/Linux testing.
 - @lachs0r contributed some Windows fixes and the bootstrap script.
 - @Nikoli contributed a lot of testing and discovered many bugs.
 - @CrimsonVoid contributed changes to the bootstrap script.

1 files changed, 30 insertions, 0 deletions

diff --git a/waftools/fragments/iconv.c b/waftools/fragments/iconv.c
new file mode 100644
index 0000000000..78c963b643
--- /dev/null
+++ b/waftools/fragments/iconv.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <iconv.h>
+#define INBUFSIZE 1024
+#define OUTBUFSIZE 4096
+
+char inbuffer[INBUFSIZE];
+char outbuffer[OUTBUFSIZE];
+
+int main(void) {
+  size_t numread;
+  iconv_t icdsc;
+  char *tocode="UTF-8";
+  char *fromcode="cp1250";
+  if ((icdsc = iconv_open(tocode, fromcode)) != (iconv_t)(-1)) {
+    while ((numread = read(0, inbuffer, INBUFSIZE))) {
+      char *iptr=inbuffer;
+      char *optr=outbuffer;
+      size_t inleft=numread;
+      size_t outleft=OUTBUFSIZE;
+      if (iconv(icdsc, &iptr, &inleft, &optr, &outleft)
+          != (size_t)(-1)) {
+        write(1, outbuffer, OUTBUFSIZE - outleft);
+      }
+    }
+    if (iconv_close(icdsc) == -1)
+      ;
+  }
+  return 0;
+}