diff options
| author |  David Bremner <david@tethera.net> | 2013-11-25 22:55:24 -0400 |
|---|---|---|
| committer | David Bremner <david@tethera.net> | 2013-11-27 07:43:29 -0400 |
| commit | b9f0e6923d645a044f837d61a9343ea16d56504e (patch) | |
| tree | e87b30e7f490038ce9db6768fe7e1b02e4d98de6 /configure | |
| parent | 7f07bfd6d0189afcd9d260f6f560056dd3476f66 (diff) | |
util: detect byte order
Unfortunately old versions of GCC and clang do not provide byte order
macros, so we re-invent them.
If UTIL_BYTE_ORDER is not defined or defined to 0, we fall back to
macros supported by recent versions of GCC and clang
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 24 |
1 files changed, 22 insertions, 2 deletions
@@ -441,6 +441,19 @@ else EOF fi +printf "Checking byte order... " +cat> _byteorder.c <<EOF +#include <stdio.h> +#include <stdint.h> +uint32_t test = 0x34333231; +int main() { printf("%.4s\n", (const char*)&test); return 0; } +EOF +${CC} ${CFLAGS} _byteorder.c -o _byteorder > /dev/null 2>&1 +util_byte_order=$(./_byteorder) +echo $util_byte_order + +rm -f _byteorder _byteorder.c + if [ $errors -gt 0 ]; then cat <<EOF @@ -702,6 +715,9 @@ prefix = ${PREFIX} # LIBDIR_IN_LDCONFIG value below is still set correctly. libdir = ${LIBDIR:=\$(prefix)/lib} +# byte order within a 32 bit word. 1234 = little, 4321 = big, 0 = guess +UTIL_BYTE_ORDER = ${util_byte_order} + # Whether libdir is in a path configured into ldconfig LIBDIR_IN_LDCONFIG = ${libdir_in_ldconfig} @@ -807,7 +823,9 @@ CONFIGURE_CFLAGS = -DHAVE_GETLINE=\$(HAVE_GETLINE) \$(GMIME_CFLAGS) \\ -DHAVE_STRSEP=\$(HAVE_STRSEP) \\ -DSTD_GETPWUID=\$(STD_GETPWUID) \\ -DSTD_ASCTIME=\$(STD_ASCTIME) \\ - -DHAVE_XAPIAN_COMPACT=\$(HAVE_XAPIAN_COMPACT) + -DHAVE_XAPIAN_COMPACT=\$(HAVE_XAPIAN_COMPACT) \\ + -DUTIL_BYTE_ORDER=\$(UTIL_BYTE_ORDER) + CONFIGURE_CXXFLAGS = -DHAVE_GETLINE=\$(HAVE_GETLINE) \$(GMIME_CFLAGS) \\ \$(TALLOC_CFLAGS) -DHAVE_VALGRIND=\$(HAVE_VALGRIND) \\ \$(VALGRIND_CFLAGS) \$(XAPIAN_CXXFLAGS) \\ @@ -815,6 +833,8 @@ CONFIGURE_CXXFLAGS = -DHAVE_GETLINE=\$(HAVE_GETLINE) \$(GMIME_CFLAGS) \\ -DHAVE_STRSEP=\$(HAVE_STRSEP) \\ -DSTD_GETPWUID=\$(STD_GETPWUID) \\ -DSTD_ASCTIME=\$(STD_ASCTIME) \\ - -DHAVE_XAPIAN_COMPACT=\$(HAVE_XAPIAN_COMPACT) + -DHAVE_XAPIAN_COMPACT=\$(HAVE_XAPIAN_COMPACT) \\ + -DUTIL_BYTE_ORDER=\$(UTIL_BYTE_ORDER) + CONFIGURE_LDFLAGS = \$(GMIME_LDFLAGS) \$(TALLOC_LDFLAGS) \$(XAPIAN_LDFLAGS) EOF |