328aafa198
Windows does not have struct iovec defined anywhere, so we define our own version that's equal to what UNIX typically has. The bulk of this patch was contributed by Mohit Aron. R=jeff git-svn-id: https://snappy.googlecode.com/svn/trunk@76 03e5f5b5-db94-4691-08a0-1a8bf15f6143
132 lines
3.8 KiB
Plaintext
132 lines
3.8 KiB
Plaintext
m4_define([snappy_major], [1])
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m4_define([snappy_minor], [1])
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m4_define([snappy_patchlevel], [0])
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# Libtool shared library interface versions (current:revision:age)
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# Update this value for every release! (A:B:C will map to foo.so.(A-C).C.B)
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# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
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m4_define([snappy_ltversion], [2:4:1])
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AC_INIT([snappy], [snappy_major.snappy_minor.snappy_patchlevel])
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AC_CONFIG_MACRO_DIR([m4])
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# These are flags passed to automake (though they look like gcc flags!)
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AM_INIT_AUTOMAKE([-Wall])
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LT_INIT
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AC_SUBST([LIBTOOL_DEPS])
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AC_PROG_CXX
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AC_LANG([C++])
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AC_C_BIGENDIAN
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AC_CHECK_HEADERS([stdint.h stddef.h sys/mman.h sys/resource.h windows.h byteswap.h sys/byteswap.h sys/endian.h sys/time.h])
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# Don't use AC_FUNC_MMAP, as it checks for mappings of already-mapped memory,
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# which we don't need (and does not exist on Windows).
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AC_CHECK_FUNC([mmap])
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GTEST_LIB_CHECK([], [true], [true # Ignore; we can live without it.])
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AC_ARG_WITH([gflags],
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[AS_HELP_STRING(
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[--with-gflags],
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[use Google Flags package to enhance the unit test @<:@default=check@:>@])],
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[],
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[with_gflags=check])
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if test "x$with_gflags" != "xno"; then
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PKG_CHECK_MODULES(
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[gflags],
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[libgflags],
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[AC_DEFINE([HAVE_GFLAGS], [1], [Use the gflags package for command-line parsing.])],
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[if test "x$with_gflags" != "xcheck"; then
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AC_MSG_FAILURE([--with-gflags was given, but test for gflags failed])
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fi])
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fi
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# See if we have __builtin_expect.
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# TODO: Use AC_CACHE.
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AC_MSG_CHECKING([if the compiler supports __builtin_expect])
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AC_TRY_COMPILE(, [
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return __builtin_expect(1, 1) ? 1 : 0
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], [
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snappy_have_builtin_expect=yes
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AC_MSG_RESULT([yes])
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], [
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snappy_have_builtin_expect=no
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AC_MSG_RESULT([no])
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])
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if test x$snappy_have_builtin_expect = xyes ; then
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AC_DEFINE([HAVE_BUILTIN_EXPECT], [1], [Define to 1 if the compiler supports __builtin_expect.])
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fi
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# See if we have working count-trailing-zeros intrinsics.
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# TODO: Use AC_CACHE.
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AC_MSG_CHECKING([if the compiler supports __builtin_ctzll])
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AC_TRY_COMPILE(, [
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return (__builtin_ctzll(0x100000000LL) == 32) ? 1 : 0
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], [
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snappy_have_builtin_ctz=yes
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AC_MSG_RESULT([yes])
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], [
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snappy_have_builtin_ctz=no
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AC_MSG_RESULT([no])
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])
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if test x$snappy_have_builtin_ctz = xyes ; then
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AC_DEFINE([HAVE_BUILTIN_CTZ], [1], [Define to 1 if the compiler supports __builtin_ctz and friends.])
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fi
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# Other compression libraries; the unit test can use these for comparison
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# if they are available. If they are not found, just ignore.
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UNITTEST_LIBS=""
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AC_DEFUN([CHECK_EXT_COMPRESSION_LIB], [
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AH_CHECK_LIB([$1])
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AC_CHECK_LIB(
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[$1],
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[$2],
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[
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AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
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UNITTEST_LIBS="-l$1 $UNITTEST_LIBS"
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],
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[true]
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)
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])
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CHECK_EXT_COMPRESSION_LIB([z], [zlibVersion])
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CHECK_EXT_COMPRESSION_LIB([lzo2], [lzo1x_1_15_compress])
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CHECK_EXT_COMPRESSION_LIB([lzf], [lzf_compress])
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CHECK_EXT_COMPRESSION_LIB([fastlz], [fastlz_compress])
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CHECK_EXT_COMPRESSION_LIB([quicklz], [qlz_compress])
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AC_SUBST([UNITTEST_LIBS])
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# These are used by snappy-stubs-public.h.in.
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if test "$ac_cv_header_stdint_h" = "yes"; then
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AC_SUBST([ac_cv_have_stdint_h], [1])
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else
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AC_SUBST([ac_cv_have_stdint_h], [0])
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fi
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if test "$ac_cv_header_stddef_h" = "yes"; then
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AC_SUBST([ac_cv_have_stddef_h], [1])
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else
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AC_SUBST([ac_cv_have_stddef_h], [0])
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fi
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if test "$ac_cv_header_sys_uio_h" = "yes"; then
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AC_SUBST([ac_cv_have_sys_uio_h], [1])
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else
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AC_SUBST([ac_cv_have_sys_uio_h], [0])
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fi
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# Export the version to snappy-stubs-public.h.
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SNAPPY_MAJOR="snappy_major"
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SNAPPY_MINOR="snappy_minor"
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SNAPPY_PATCHLEVEL="snappy_patchlevel"
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AC_SUBST([SNAPPY_MAJOR])
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AC_SUBST([SNAPPY_MINOR])
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AC_SUBST([SNAPPY_PATCHLEVEL])
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AC_SUBST([SNAPPY_LTVERSION], snappy_ltversion)
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AC_CONFIG_HEADERS([config.h])
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AC_CONFIG_FILES([Makefile snappy-stubs-public.h])
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AC_OUTPUT
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