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a04f09298d
libsodium/configure.ac
Frank Denis a01c5f8fd8 Add a conditional to enable retpoline support 
Using retpoline in userland code that doesn't run arbitrary code is
questionable to start with.

Linux is also getting SPECTRE v2 userspace-to-userspace protection.

In addition, some platforms have a gcc version that advertises
support for retpolines, but the resulting binaries simply don't work
or cannot be linked.

So, do not enable this by default. Let builders choose if they
really want to enable this in their builds.
2019-01-04 12:43:47 +01:00

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AC_PREREQ([2.65])
AC_INIT([libsodium],[1.0.17],
[https://github.com/jedisct1/libsodium/issues],
[libsodium],
[https://github.com/jedisct1/libsodium])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([src/libsodium/sodium/version.c])
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE([1.11 dist-bzip2 tar-ustar foreign subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AM_MAINTAINER_MODE
AM_DEP_TRACK
AC_SUBST(VERSION)
SODIUM_LIBRARY_VERSION_MAJOR=10
SODIUM_LIBRARY_VERSION_MINOR=1
DLL_VERSION=8
SODIUM_LIBRARY_VERSION=25:0:2
# | | |
# +------+ | +---+
# | | |
# current:revision:age
# | | |
# | | +- increment if interfaces have been added
# | | set to zero if interfaces have been removed
# | | or changed
# | +- increment if source code has changed
# | set to zero if current is incremented
# +- increment if interfaces have been added, removed or changed
AC_SUBST(SODIUM_LIBRARY_VERSION_MAJOR)
AC_SUBST(SODIUM_LIBRARY_VERSION_MINOR)
AC_SUBST(SODIUM_LIBRARY_VERSION)
AC_SUBST(DLL_VERSION)
AC_LANG_ASSERT(C)
LX_CFLAGS=${CFLAGS-NONE}
dnl Path check
AS_IF([pwd | fgrep ' ' > /dev/null 2>&1],
[AC_MSG_ERROR([The build directory contains whitespaces - This can cause tests/installation to fail due to limitations of some libtool versions])]
)
dnl Switches
AC_ARG_ENABLE(ssp,
[AS_HELP_STRING(--disable-ssp,Do not compile with -fstack-protector)],
[
AS_IF([test "x$enableval" = "xno"], [
enable_ssp="no"
], [
enable_ssp="yes"
])
],
[
enable_ssp="yes"
])
AC_ARG_ENABLE(asm,
[AS_HELP_STRING(--disable-asm,[Do not compile assembly code -- As a side effect, this disables CPU-specific implementations on non-Windows platforms. Only for use with targets such as WebAssembly and NativeClient.])],
[
AS_IF([test "x$enableval" = "xno"], [
enable_asm="no"
], [
enable_asm="yes"
])
],
[
enable_asm="yes"
])
AS_IF([test "x$EMSCRIPTEN" != "x"], [
AX_CHECK_COMPILE_FLAG([-s ASSERTIONS=0], [
enable_asm="no"
AC_MSG_WARN([compiling to JavaScript - asm implementations disabled])
], [
AC_MSG_WARN([EMSCRIPTEN environment variable defined, but emcc doesn't appear to be used - Assuming compilation to native code])
CFLAGS="$CFLAGS -U__EMSCRIPTEN__"
unset EMSCRIPTEN
])
])
AS_IF([test "$host_os" = "nacl" -o "$host_os" = "pnacl"], [
enable_asm="no"
AC_MSG_WARN([compiling to Native Client - asm implementations disabled])
])
AC_ARG_ENABLE(pie,
[AS_HELP_STRING(--disable-pie,Do not produce position independent executables)],
enable_pie=$enableval, enable_pie="maybe")
AS_CASE([$host_os], [mingw*|cygwin*|msys], [enable_pie="no"])
AC_ARG_ENABLE(blocking-random,
[AS_HELP_STRING(--enable-blocking-random,Enable this switch only if /dev/urandom is totally broken on the target platform)],
[
AS_IF([test "x$enableval" = "xyes"], [
AC_DEFINE([USE_BLOCKING_RANDOM], [1], [/dev/urandom is insecure on the target platform])
])
])
AC_ARG_ENABLE(minimal,
[AS_HELP_STRING(--enable-minimal,
[Only compile the minimum set of functions required for the high-level API])],
[
AS_IF([test "x$enableval" = "xyes"], [
enable_minimal="yes"
SODIUM_LIBRARY_MINIMAL_DEF="#define SODIUM_LIBRARY_MINIMAL 1"
AC_DEFINE([MINIMAL], [1], [Define for a minimal build, without deprecated functions and functions that high-level APIs depend on])
], [
enable_minimal="no"
])
],
[
enable_minimal="no"
])
AM_CONDITIONAL([MINIMAL], [test x$enable_minimal = xyes])
AC_SUBST(SODIUM_LIBRARY_MINIMAL_DEF)
AC_ARG_WITH(pthreads, AC_HELP_STRING([--with-pthreads],
[use pthreads library, or --without-pthreads to disable threading support.]),
[ ], [withval="yes"])
AS_IF([test "x$withval" = "xyes"], [
AX_PTHREAD([
AC_DEFINE([HAVE_PTHREAD], [1], [Define if you have POSIX threads libraries and header files])
with_threads="yes"
LIBS="$PTHREAD_LIBS $LIBS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
CC="$PTHREAD_CC"])
], [with_threads="no"])
AC_ARG_WITH(safecode,
[AS_HELP_STRING(--with-safecode,For maintainers only - please do not use)],
[AS_IF([test "x$withval" = "xyes"], [
AC_ARG_VAR([SAFECODE_HOME], [set to the safecode base directory])
: ${SAFECODE_HOME:=/opt/safecode}
LDFLAGS="$LDFLAGS -L${SAFECODE_HOME}/lib"
LIBS="$LIBS -lsc_dbg_rt -lpoolalloc_bitmap -lstdc++"
CFLAGS="$CFLAGS -fmemsafety"
])
])
AC_ARG_WITH(ctgrind,
[AS_HELP_STRING(--with-ctgrind,For maintainers only - please do not use)],
[AS_IF([test "x$withval" = "xyes"], [
AC_CHECK_LIB(ctgrind, ct_poison)
])
])
AC_ARG_ENABLE(retpoline,
[AS_HELP_STRING(--enable-retpoline,Use return trampolines for indirect calls)],
[AS_IF([test "x$enableval" = "xyes"], [
AX_CHECK_COMPILE_FLAG([-mindirect-branch=thunk-inline],
[CFLAGS="$CFLAGS -mindirect-branch=thunk-inline"],
[AX_CHECK_COMPILE_FLAG([-mretpoline], [CFLAGS="$CFLAGS -mretpoline"])]
)
AX_CHECK_COMPILE_FLAG([-mindirect-branch-register])
])
])
ENABLE_CWFLAGS=no
AC_ARG_ENABLE(debug,
[AS_HELP_STRING(--enable-debug,For maintainers only - please do not use)],
[
AS_IF([test "x$enableval" = "xyes"], [
AS_IF([test "x$LX_CFLAGS" = "xNONE"], [
nxflags=""
for flag in `echo $CFLAGS`; do
AS_CASE([$flag],
[-O*], [ ],
[-g*], [ ],
[*], [AS_VAR_APPEND([nxflags], [" $flag"])])
done
CFLAGS="$nxflags -O -g3"
])
ENABLE_CWFLAGS=yes
CPPFLAGS="$CPPFLAGS -DDEBUG=1 -U_FORTIFY_SOURCE"
])
])
AC_ARG_ENABLE(opt,
[AS_HELP_STRING(--enable-opt,Optimize for the native CPU - The resulting library will be faster but not portable)],
[
AS_IF([test "x$enableval" = "xyes"], [
AX_CHECK_COMPILE_FLAG([-Ofast], [CFLAGS="$CFLAGS -Ofast"])
AX_CHECK_COMPILE_FLAG([-fomit-frame-pointer], [CFLAGS="$CFLAGS -fomit-frame-pointer"])
AX_CHECK_COMPILE_FLAG([-march=native], [CFLAGS="$CFLAGS -march=native"])
])
])
AC_SUBST([MAINT])
AX_VALGRIND_CHECK
dnl Checks
AC_PROG_CC_C99
AM_PROG_AS
AC_USE_SYSTEM_EXTENSIONS
AC_C_VARARRAYS
AC_CHECK_DEFINE([__native_client__], [NATIVECLIENT="yes"], [])
AC_CHECK_DEFINE([_FORTIFY_SOURCE], [], [
AX_CHECK_COMPILE_FLAG([-D_FORTIFY_SOURCE=2],
[CPPFLAGS="$CPPFLAGS -D_FORTIFY_SOURCE=2"])
])
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],
[CFLAGS="$CFLAGS -fvisibility=hidden"])
AS_CASE([$host_os], [cygwin*|mingw*|msys|pw32*|cegcc*], [ ], [
AX_CHECK_COMPILE_FLAG([-fPIC], [CFLAGS="$CFLAGS -fPIC"])
])
AS_IF([test "$enable_pie" != "no"],[
AX_CHECK_COMPILE_FLAG([-fPIE], [
AX_CHECK_LINK_FLAG([-pie], [
[CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie"]
])
])
])
AX_CHECK_COMPILE_FLAG([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-strict-aliasing"])
AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CFLAGS="$CFLAGS -fno-strict-overflow"], [
AX_CHECK_COMPILE_FLAG([-fwrapv], [CFLAGS="$CFLAGS -fwrapv"])
])
AS_IF([test "$GCC" = "yes" ], [
AS_CASE([$host_cpu],
[i?86|amd64|x86_64], [
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([
#if !defined(__clang__) && defined(__GNUC__) && ((__GNUC__ << 8) | __GNUC_MINOR__) < 0x403
# error old gcc
#endif
int main(void) { return 0; }
])],,[
AX_CHECK_COMPILE_FLAG([-flax-vector-conversions], [CFLAGS="$CFLAGS -flax-vector-conversions"])
])
]
)
])
LIBTOOL_OLD_FLAGS="$LIBTOOL_EXTRA_FLAGS"
LIBTOOL_EXTRA_FLAGS="$LIBTOOL_EXTRA_FLAGS -version-info $SODIUM_LIBRARY_VERSION"
AC_ARG_ENABLE(soname-versions,
[AC_HELP_STRING([--enable-soname-versions], [enable soname versions (must be disabled for Android) (default: enabled)])],
[
AS_IF([test "x$enableval" = "xno"], [
LIBTOOL_EXTRA_FLAGS="$LIBTOOL_OLD_FLAGS -avoid-version"
])
]
)
AS_CASE([$host_os],
[cygwin*|mingw*|msys|pw32*|cegcc*], [
AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])
AX_CHECK_LINK_FLAG([-Wl,--high-entropy-va], [LDFLAGS="$LDFLAGS -Wl,--high-entropy-va"])
AX_CHECK_LINK_FLAG([-Wl,--nxcompat], [LDFLAGS="$LDFLAGS -Wl,--nxcompat"])
])
AS_CASE([$host_os],
[cygwin*|mingw*|msys|pw32*|cegcc*], [
AX_CHECK_COMPILE_FLAG([-fno-asynchronous-unwind-tables], [
[CFLAGS="$CFLAGS -fno-asynchronous-unwind-tables"]
])
])
AS_IF([test "x$enable_ssp" != "xno"],[
AS_CASE([$host_os],
[cygwin*|mingw*|msys|pw32*|cegcc*|haiku], [ ],
[*], [
AX_CHECK_COMPILE_FLAG([-fstack-protector], [
AX_CHECK_LINK_FLAG([-fstack-protector],
[CFLAGS="$CFLAGS -fstack-protector"]
)
])
])
])
AC_ARG_VAR([CWFLAGS], [define to compilation flags for generating extra warnings])
AX_CHECK_COMPILE_FLAG([$CFLAGS -Wall], [CWFLAGS="$CFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([$CFLAGS -Wextra], [CWFLAGS="$CFLAGS -Wextra"])
AC_MSG_CHECKING(for clang)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
#ifndef __clang__
#error Not clang
#endif
]])],
[AC_MSG_RESULT(yes)
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wno-unknown-warning-option],
[CWFLAGS="$CWFLAGS -Wno-unknown-warning-option"])
],
[AC_MSG_RESULT(no)
])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wbad-function-cast], [CWFLAGS="$CWFLAGS -Wbad-function-cast"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wcast-qual], [CWFLAGS="$CWFLAGS -Wcast-qual"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wdiv-by-zero], [CWFLAGS="$CWFLAGS -Wdiv-by-zero"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wduplicated-branches], [CWFLAGS="$CWFLAGS -Wduplicated-branches"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wduplicated-cond], [CWFLAGS="$CWFLAGS -Wduplicated-cond"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wfloat-equal], [CWFLAGS="$CWFLAGS -Wfloat-equal"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wformat=2], [CWFLAGS="$CWFLAGS -Wformat=2"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wlogical-op], [CWFLAGS="$CWFLAGS -Wlogical-op"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wmaybe-uninitialized], [CWFLAGS="$CWFLAGS -Wmaybe-uninitialized"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wmisleading-indentation], [CWFLAGS="$CWFLAGS -Wmisleading-indentation"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wmissing-declarations], [CWFLAGS="$CWFLAGS -Wmissing-declarations"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wmissing-prototypes], [CWFLAGS="$CWFLAGS -Wmissing-prototypes"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wnested-externs], [CWFLAGS="$CWFLAGS -Wnested-externs"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wno-type-limits], [CWFLAGS="$CWFLAGS -Wno-type-limits"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wno-unknown-pragmas], [CWFLAGS="$CWFLAGS -Wno-unknown-pragmas"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wnormalized=id], [CWFLAGS="$CWFLAGS -Wnormalized=id"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wnull-dereference], [CWFLAGS="$CWFLAGS -Wnull-dereference"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wold-style-declaration], [CWFLAGS="$CWFLAGS -Wold-style-declaration"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wpointer-arith], [CWFLAGS="$CWFLAGS -Wpointer-arith"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wredundant-decls], [CWFLAGS="$CWFLAGS -Wredundant-decls"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wrestrict], [CWFLAGS="$CWFLAGS -Wrestrict"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wshorten-64-to-32], [CWFLAGS="$CWFLAGS -Wshorten-64-to-32"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wsometimes-uninitialized], [CWFLAGS="$CWFLAGS -Wsometimes-uninitialized"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wstrict-prototypes], [CWFLAGS="$CWFLAGS -Wstrict-prototypes"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wswitch-enum], [CWFLAGS="$CWFLAGS -Wswitch-enum"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wvariable-decl], [CWFLAGS="$CWFLAGS -Wvariable-decl"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wwrite-strings], [CWFLAGS="$CWFLAGS -Wwrite-strings"])
AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
AX_CHECK_LINK_FLAG([-Wl,-z,noexecstack], [LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"])
AX_CHECK_CATCHABLE_SEGV
AX_CHECK_CATCHABLE_ABRT
AS_IF([test "x$with_threads" = "xyes"], [
AX_TLS([AC_MSG_RESULT(thread local storage is supported)],
[AC_MSG_RESULT(thread local storage is not supported)]) ])
LT_INIT
AC_SUBST(LIBTOOL_DEPS)
AC_ARG_VAR([AR], [path to the ar utility])
AC_CHECK_TOOL([AR], [ar], [ar])
dnl Checks for headers
AS_IF([test "x$EMSCRIPTEN" = "x" -a "$host_os" != "pnacl"], [
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-mmmx], [CFLAGS="$CFLAGS -mmmx"])
AC_MSG_CHECKING(for MMX instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC target("mmx")
#include <mmintrin.h>
]], [[ __m64 x = _mm_setzero_si64(); ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_MMINTRIN_H], [1], [mmx is available])
AX_CHECK_COMPILE_FLAG([-mmmx], [CFLAGS_MMX="-mmmx"])],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-msse2], [CFLAGS="$CFLAGS -msse2"])
AC_MSG_CHECKING(for SSE2 instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC target("sse2")
#ifndef __SSE2__
# define __SSE2__
#endif
#include <emmintrin.h>
]], [[ __m128d x = _mm_setzero_pd();
__m128i z = _mm_srli_epi64(_mm_setzero_si128(), 26); ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_EMMINTRIN_H], [1], [sse2 is available])
AX_CHECK_COMPILE_FLAG([-msse2], [CFLAGS_SSE2="-msse2"])],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-msse3], [CFLAGS="$CFLAGS -msse3"])
AC_MSG_CHECKING(for SSE3 instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC target("sse3")
#include <pmmintrin.h>
]], [[ __m128 x = _mm_addsub_ps(_mm_cvtpd_ps(_mm_setzero_pd()),
_mm_cvtpd_ps(_mm_setzero_pd())); ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_PMMINTRIN_H], [1], [sse3 is available])
AX_CHECK_COMPILE_FLAG([-msse3], [CFLAGS_SSE3="-msse3"])],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-mssse3], [CFLAGS="$CFLAGS -mssse3"])
AC_MSG_CHECKING(for SSSE3 instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC target("ssse3")
#include <tmmintrin.h>
]], [[ __m64 x = _mm_abs_pi32(_m_from_int(0)); ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_TMMINTRIN_H], [1], [ssse3 is available])
AX_CHECK_COMPILE_FLAG([-mssse3], [CFLAGS_SSSE3="-mssse3"])],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-msse4.1], [CFLAGS="$CFLAGS -msse4.1"])
AC_MSG_CHECKING(for SSE4.1 instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC target("sse4.1")
#include <smmintrin.h>
]], [[ __m128i x = _mm_minpos_epu16(_mm_setzero_si128()); ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_SMMINTRIN_H], [1], [sse4.1 is available])
AX_CHECK_COMPILE_FLAG([-msse4.1], [CFLAGS_SSE41="-msse4.1"])],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-mavx], [CFLAGS="$CFLAGS -mavx"])
AC_MSG_CHECKING(for AVX instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __native_client__
# error NativeClient detected - Avoiding AVX opcodes
#endif
#pragma GCC target("avx")
#include <immintrin.h>
]], [[ _mm256_zeroall(); ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_AVXINTRIN_H], [1], [AVX is available])
AX_CHECK_COMPILE_FLAG([-mavx], [CFLAGS_AVX="-mavx"])],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-mavx2], [CFLAGS="$CFLAGS -mavx2"])
AC_MSG_CHECKING(for AVX2 instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __native_client__
# error NativeClient detected - Avoiding AVX2 opcodes
#endif
#pragma GCC target("avx2")
#include <immintrin.h>
]], [[
__m256 x = _mm256_set1_ps(3.14);
__m256 y = _mm256_permutevar8x32_ps(x, _mm256_set1_epi32(42));
return _mm256_movemask_ps(_mm256_cmp_ps(x, y, _CMP_NEQ_OQ));
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_AVX2INTRIN_H], [1], [AVX2 is available])
AX_CHECK_COMPILE_FLAG([-mavx2], [CFLAGS_AVX2="-mavx2"])
AC_MSG_CHECKING(if _mm256_broadcastsi128_si256 is correctly defined)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __native_client__
# error NativeClient detected - Avoiding AVX2 opcodes
#endif
#pragma GCC target("avx2")
#include <immintrin.h>
]], [[ __m256i y = _mm256_broadcastsi128_si256(_mm_setzero_si128()); ]])],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([_mm256_broadcastsi128_si256], [_mm_broadcastsi128_si256],
[Define to the local name of _mm256_broadcastsi128_si256])])
],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-mavx512f], [CFLAGS="$CFLAGS -mavx512f"])
AC_MSG_CHECKING(for AVX512F instructions set)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __native_client__
# error NativeClient detected - Avoiding AVX512F opcodes
#endif
#pragma GCC target("avx512f")
#include <immintrin.h>
]], [[
#ifndef __AVX512F__
# error No AVX512 support
#elif defined(__clang__)
# if __clang_major__ < 4
# error Compiler AVX512 support may be broken
# endif
#elif defined(__GNUC__)
# if __GNUC__ < 6
# error Compiler AVX512 support may be broken
# endif
#endif
__m512i x = _mm512_setzero_epi32();
__m512i y = _mm512_permutexvar_epi64(_mm512_setr_epi64(0, 1, 4, 5, 2, 3, 6, 7), x);
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_AVX512FINTRIN_H], [1], [AVX512F is available])
AX_CHECK_COMPILE_FLAG([-mavx512f], [CFLAGS_AVX512F="-mavx512f"])],
[AC_MSG_RESULT(no)
AX_CHECK_COMPILE_FLAG([$CFLAGS -mno-avx512f],
[CFLAGS="$CFLAGS -mno-avx512f"])
])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-maes], [CFLAGS="$CFLAGS -maes"])
AX_CHECK_COMPILE_FLAG([-mpclmul], [CFLAGS="$CFLAGS -mpclmul"])
AC_MSG_CHECKING(for AESNI instructions set and PCLMULQDQ)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __native_client__
# error NativeClient detected - Avoiding AESNI opcodes
#endif
#pragma GCC target("aes")
#pragma GCC target("pclmul")
#include <wmmintrin.h>
]], [[ __m128i x = _mm_aesimc_si128(_mm_setzero_si128());
__m128i y = _mm_clmulepi64_si128(_mm_setzero_si128(), _mm_setzero_si128(), 0);]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_WMMINTRIN_H], [1], [aesni is available])
AX_CHECK_COMPILE_FLAG([-maes], [CFLAGS_AESNI="-maes"])
AX_CHECK_COMPILE_FLAG([-mpclmul], [CFLAGS_PCLMUL="-mpclmul"])
],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
oldcflags="$CFLAGS"
AX_CHECK_COMPILE_FLAG([-mrdrnd], [CFLAGS="$CFLAGS -mrdrnd"])
AC_MSG_CHECKING(for RDRAND)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __native_client__
# error NativeClient detected - Avoiding RDRAND opcodes
#endif
#pragma GCC target("rdrnd")
#include <immintrin.h>
]], [[ unsigned long long x; _rdrand64_step(&x); ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_RDRAND], [1], [rdrand is available])
AX_CHECK_COMPILE_FLAG([-mrdrnd], [CFLAGS_RDRAND="-mrdrnd"])
],
[AC_MSG_RESULT(no)])
CFLAGS="$oldcflags"
])
AC_SUBST(CFLAGS_MMX)
AC_SUBST(CFLAGS_SSE2)
AC_SUBST(CFLAGS_SSE3)
AC_SUBST(CFLAGS_SSSE3)
AC_SUBST(CFLAGS_SSE41)
AC_SUBST(CFLAGS_AVX)
AC_SUBST(CFLAGS_AVX2)
AC_SUBST(CFLAGS_AVX512F)
AC_SUBST(CFLAGS_AESNI)
AC_SUBST(CFLAGS_PCLMUL)
AC_SUBST(CFLAGS_RDRAND)
AC_CHECK_HEADERS([sys/mman.h intrin.h])
AC_MSG_CHECKING([if _xgetbv() is available])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[ #include <intrin.h> ]], [[ (void) _xgetbv(0) ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE__XGETBV], [1], [_xgetbv() is available])],
[AC_MSG_RESULT(no)])
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AS_CASE([$host_cpu],
[i?86|amd64|x86_64],
[ac_cv_c_bigendian=no]
)
AC_C_BIGENDIAN(
AC_DEFINE(NATIVE_BIG_ENDIAN, 1, [machine is bigendian]),
AC_DEFINE(NATIVE_LITTLE_ENDIAN, 1, [machine is littleendian]),
AC_MSG_ERROR([unknown endianness]),
AC_MSG_ERROR([universal endianness is not supported - compile separately and use lipo(1)])
)
AC_MSG_CHECKING(whether __STDC_LIMIT_MACROS is required)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <limits.h>
#include <stdint.h>
]], [[
(void) SIZE_MAX;
(void) UINT64_MAX;
]])],
[AC_MSG_RESULT(no)],
[AC_MSG_RESULT(yes)
CPPFLAGS="$CPPFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS"
])
AC_MSG_CHECKING(whether we can use inline asm code)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
]], [[
int a = 42;
int *pnt = &a;
__asm__ __volatile__ ("" : : "r"(pnt) : "memory");
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_INLINE_ASM], [1], [inline asm code can be used])]
[AC_MSG_RESULT(no)]
)
HAVE_AMD64_ASM_V=0
AS_IF([test "$enable_asm" != "no"],[
AC_MSG_CHECKING(whether we can use x86_64 asm code)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
]], [[
#if defined(__amd64) || defined(__amd64__) || defined(__x86_64__)
# if defined(__CYGWIN__) || defined(__MINGW32__) || defined(__MINGW64__) || defined(_WIN32) || defined(_WIN64)
# error Windows x86_64 calling conventions are not supported yet
# endif
/* neat */
#else
# error !x86_64
#endif
unsigned char i = 0, o = 0, t;
__asm__ __volatile__ ("pxor %%xmm12, %%xmm6 \n"
"movb (%[i]), %[t] \n"
"addb %[t], (%[o]) \n"
: [t] "=&r"(t)
: [o] "D"(&o), [i] "S"(&i)
: "memory", "flags", "cc");
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_AMD64_ASM], [1], [x86_64 asm code can be used])
HAVE_AMD64_ASM_V=1],
[AC_MSG_RESULT(no)])
])
AM_CONDITIONAL([HAVE_AMD64_ASM], [test $HAVE_AMD64_ASM_V = 1])
AC_SUBST(HAVE_AMD64_ASM_V)
HAVE_AVX_ASM_V=0
AS_IF([test "$enable_asm" != "no"],[
AC_MSG_CHECKING(whether we can assemble AVX opcodes)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
]], [[
#if defined(__amd64) || defined(__amd64__) || defined(__x86_64__)
# if defined(__CYGWIN__) || defined(__MINGW32__) || defined(__MINGW64__) || defined(_WIN32) || defined(_WIN64)
# error Windows x86_64 calling conventions are not supported yet
# endif
/* neat */
#else
# error !x86_64
#endif
__asm__ __volatile__ ("vpunpcklqdq %xmm0,%xmm13,%xmm0");
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_AVX_ASM], [1], [AVX opcodes are supported])
HAVE_AVX_ASM_V=1],
[AC_MSG_RESULT(no)])
])
AM_CONDITIONAL([HAVE_AVX_ASM], [test $HAVE_AVX_ASM_V = 1])
AC_SUBST(HAVE_AVX_ASM_V)
AC_MSG_CHECKING(for 128-bit arithmetic)
HAVE_TI_MODE_V=0
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if !defined(__clang__) && !defined(__GNUC__) && !defined(__SIZEOF_INT128__)
# error mode(TI) is a gcc extension, and __int128 is not available
#endif
#if defined(__clang__) && !defined(__x86_64__) && !defined(__aarch64__)
# error clang does not properly handle the 128-bit type on 32-bit systems
#endif
#ifndef NATIVE_LITTLE_ENDIAN
# error libsodium currently expects a little endian CPU for the 128-bit type
#endif
#ifdef __EMSCRIPTEN__
# error emscripten currently doesn't support some operations on integers larger than 64 bits
#endif
#include <stddef.h>
#include <stdint.h>
#if defined(__SIZEOF_INT128__)
typedef unsigned __int128 uint128_t;
#else
typedef unsigned uint128_t __attribute__((mode(TI)));
#endif
void fcontract(uint128_t *t) {
*t += 0x8000000000000 - 1;
*t *= *t;
*t >>= 84;
}
]], [[
(void) fcontract;
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_TI_MODE], [1], [gcc TI mode is available])
HAVE_TI_MODE_V=1],
[AC_MSG_RESULT(no)])
AM_CONDITIONAL([HAVE_TI_MODE], [test $HAVE_TI_MODE_V = 1])
AC_SUBST(HAVE_TI_MODE_V)
HAVE_CPUID_V=0
AS_IF([test "$enable_asm" != "no" -o "$host_alias" = "x86_64-nacl"],[
AC_MSG_CHECKING(for cpuid instruction)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]], [[
unsigned int cpu_info[4];
__asm__ __volatile__ ("xchgl %%ebx, %k1; cpuid; xchgl %%ebx, %k1" :
"=a" (cpu_info[0]), "=&r" (cpu_info[1]),
"=c" (cpu_info[2]), "=d" (cpu_info[3]) :
"0" (0U), "2" (0U));
]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_CPUID], [1], [cpuid instruction is available])
HAVE_CPUID_V=1],
[AC_MSG_RESULT(no)])
])
AC_SUBST(HAVE_CPUID_V)
asm_hide_symbol="unsupported"
AS_IF([test "$enable_asm" != "no" -o "$host_os" = "nacl"],[
AC_MSG_CHECKING(if the .private_extern asm directive is supported)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[ ]], [[
__asm__ __volatile__ (".private_extern dummy_symbol \n"
".private_extern _dummy_symbol \n"
".globl dummy_symbol \n"
".globl _dummy_symbol \n"
"dummy_symbol: \n"
"_dummy_symbol: \n"
" nop \n"
);
]])],
[AC_MSG_RESULT(yes)
asm_hide_symbol=".private_extern"],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING(if the .hidden asm directive is supported)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[ ]], [[
__asm__ __volatile__ (".hidden dummy_symbol \n"
".hidden _dummy_symbol \n"
".globl dummy_symbol \n"
".globl _dummy_symbol \n"
"dummy_symbol: \n"
"_dummy_symbol: \n"
" nop \n"
);
]])],
[AC_MSG_RESULT(yes)
AS_IF([test "$asm_hide_symbol" = "unsupported"],
[asm_hide_symbol=".hidden"],
[AC_MSG_NOTICE([unable to reliably tag symbols as private])
asm_hide_symbol="unsupported"])
],
[AC_MSG_RESULT(no)])
AS_IF([test "$asm_hide_symbol" != "unsupported"],[
AC_DEFINE_UNQUOTED([ASM_HIDE_SYMBOL], [$asm_hide_symbol], [directive to hide symbols])
])
])
AC_MSG_CHECKING(if weak symbols are supported)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#if !defined(__ELF__) && !defined(__APPLE_CC__)
# error Support for weak symbols may not be available
#endif
__attribute__((weak)) void __dummy(void *x) { }
void f(void *x) { __dummy(x); }
]], [[ ]]
)],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_WEAK_SYMBOLS], [1], [weak symbols are supported])],
[AC_MSG_RESULT(no)])
AC_MSG_CHECKING(if data alignment is required)
aligned_access_required=yes
AS_CASE([$host_cpu],
[i?86|amd64|x86_64|powerpc*|s390*],
[aligned_access_required=no],
[arm*],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifndef __ARM_FEATURE_UNALIGNED
# error data alignment is required
#endif
]], [[]])], [aligned_access_required=no], [])]
)
AS_IF([test "x$aligned_access_required" = "xyes"],
[AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)
AC_DEFINE([CPU_UNALIGNED_ACCESS], [1], [unaligned memory access is supported])])
AC_MSG_CHECKING(if atomic operations are supported)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[ ]], [[
static volatile int _sodium_lock;
__sync_lock_test_and_set(&_sodium_lock, 1);
__sync_lock_release(&_sodium_lock);
]]
)],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_ATOMIC_OPS], [1], [atomic operations are supported])],
[AC_MSG_RESULT(no)])
dnl Checks for functions and headers
AC_FUNC_ALLOCA
AS_IF([test "x$EMSCRIPTEN" = "x"],[
AC_CHECK_FUNCS([arc4random arc4random_buf])
AC_CHECK_FUNCS([mmap mlock madvise mprotect memset_s explicit_bzero explicit_memset nanosleep])
])
AC_CHECK_FUNCS([posix_memalign getpid])
AC_SUBST([LIBTOOL_EXTRA_FLAGS])
TEST_LDFLAGS=''
AS_IF([test "x$EMSCRIPTEN" != "x"],[
EXEEXT=.js
TEST_LDFLAGS='--memory-init-file 0 --pre-js pre.js.inc -s RESERVED_FUNCTION_POINTERS=8'
])
AC_SUBST(TEST_LDFLAGS)
AM_CONDITIONAL([EMSCRIPTEN], [test "x$EMSCRIPTEN" != "x"])
AM_CONDITIONAL([NATIVECLIENT], [test "x$NATIVECLIENT" != "x"])
AC_DEFINE([CONFIGURED], [1], [the build system was properly configured])
dnl Libtool.
LT_INIT([dlopen])
AC_LIBTOOL_WIN32_DLL
gl_LD_OUTPUT_DEF
dnl Output.
AH_VERBATIM([NDEBUG], [/* Always evaluate assert() calls */
#ifdef NDEBUG
#/**/undef/**/ NDEBUG
#endif])
AS_IF([test "x$ENABLE_CWFLAGS" = "xyes"], [
CFLAGS="$CFLAGS $CWFLAGS"
])
AC_CONFIG_FILES([Makefile
builds/Makefile
contrib/Makefile
dist-build/Makefile
libsodium.pc
libsodium-uninstalled.pc
msvc-scripts/Makefile
src/Makefile
src/libsodium/Makefile
src/libsodium/include/Makefile
src/libsodium/include/sodium/version.h
test/default/Makefile
test/Makefile
])
AC_OUTPUT
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