From c9b54ee2cd504542cac4ed95fa7842bd14b39f9c Mon Sep 17 00:00:00 2001 From: "A. Wilcox" Date: Fri, 18 Aug 2017 20:36:03 -0500 Subject: [PATCH] makeguids: Ensure compatibility with other libcs The musl libc does not provide __bswap_constant_XX. If does not provide these macros, use our own. This fixes issue #84. --- src/makeguids.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/makeguids.c b/src/makeguids.c index ec75a86..6b0d80e 100644 --- a/src/makeguids.c +++ b/src/makeguids.c @@ -152,6 +152,15 @@ main(int argc, char *argv[]) fprintf(symout, "#include \n"); fprintf(symout, "#include \n"); fprintf(symout, """\n\ +#ifndef __bswap_constant_16\n\ +#define __bswap_constant_16(x)\\\n\ + ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))\n\ +#endif\n\ +#ifndef __bswap_constant_32\n\ +#define __bswap_constant_32(x)\\\n\ + ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \\\n\ + (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))\n\ +#endif\n\ #if BYTE_ORDER == BIG_ENDIAN\n\ #define cpu_to_be32(n) (n)\n\ #define cpu_to_be16(n) (n)\n\