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libsodium/configure.ac
Frank Denis c3045e2cb0 Check that SIGSEGV handlers work 
Tools such as ASAN may trap violations instead of our handlers,
making the sodium_utils{2,3} test fail.

This has been documented for a long time, but it's probably better
to detect this and ignore tests depending on working signal handlers.
2017-06-23 11:11:16 +02:00

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AC_PREREQ([2.65])
AC_INIT([libsodium],[1.0.13],
[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)
ISODATE=`date +%Y-%m-%d`
AC_SUBST(ISODATE)
SODIUM_LIBRARY_VERSION_MAJOR=9
SODIUM_LIBRARY_VERSION_MINOR=4
DLL_VERSION=8
SODIUM_LIBRARY_VERSION=20:1:2
# | | |
# +------+ | +---+
# | | |
# 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 -- This disables all (including non-assembly) platform-specific optimizations on Unix systems)],
[
AS_IF([test "x$enableval" = "xno"], [
enable_asm="no"
], [
enable_asm="yes"
])
],
[
enable_asm="yes"
])
AS_IF([test "x$EMSCRIPTEN" != "x"], [
enable_asm="no"
AC_MSG_WARN([compiling to JavaScript - asm implementations disabled])
])
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])
LIBS="$PTHREAD_LIBS $LIBS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
CC="$PTHREAD_CC"])
])
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="$CFLAGS -fmemsafety"
])
])
AC_ARG_ENABLE(debug,
[AS_HELP_STRING(--enable-debug,For maintainers only - please do not use)],
[
AS_IF([test "x$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 -O0 -g3"
])
CPPFLAGS="$CPPFLAGS -DDEBUG=1"
])
])
AC_ARG_ENABLE(opt,
[AS_HELP_STRING(--enable-opt,Optimize for the native CPU - The resulting library will be faster but not portable)],
[
AS_IF([test "x$enableval" = "xyes"], [
AX_CHECK_COMPILE_FLAG([-Ofast], [CFLAGS="$CFLAGS -Ofast"])
AX_CHECK_COMPILE_FLAG([-march=native], [CFLAGS="$CFLAGS -march=native"])
])
])
AC_SUBST([MAINT])
AX_VALGRIND_CHECK
dnl Checks
AC_PROG_CC_C99
AM_PROG_AS
AC_USE_SYSTEM_EXTENSIONS
AC_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="$LDFLAGS -Wl,--nxcompat"])
])
AS_IF([test "x$enable_ssp" != "xno"],[
AS_CASE([$host_os],
[cygwin*|mingw*|msys|pw32*|cegcc*], [ ],
[*], [
AX_CHECK_COMPILE_FLAG([-fstack-protector], [
AX_CHECK_LINK_FLAG([-fstack-protector],
[CFLAGS="$CFLAGS -fstack-protector"]
)
])
])
])
AX_CHECK_COMPILE_FLAG([-Wwrite-strings], [CFLAGS="$CFLAGS -Wwrite-strings"])
AX_CHECK_COMPILE_FLAG([-Wdiv-by-zero], [CFLAGS="$CFLAGS -Wdiv-by-zero"])
AX_CHECK_COMPILE_FLAG([-Wsometimes-uninitialized], [CFLAGS="$CFLAGS -Wsometimes-uninitialized"])
AC_ARG_VAR([CWFLAGS], [define to compilation flags for generating extra warnings])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wall], [CWFLAGS="$CWFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wextra], [CWFLAGS="$CWFLAGS -Wextra"])
AC_MSG_CHECKING(for clang)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
#ifndef __clang__
be sad
#endif
]])],
[AC_MSG_RESULT(yes)
AX_CHECK_COMPILE_FLAG([$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-align], [CWFLAGS="$CWFLAGS -Wcast-align"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wcast-qual], [CWFLAGS="$CWFLAGS -Wcast-qual"])
AX_CHECK_COMPILE_FLAG([$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 -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-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 -Wpointer-arith], [CWFLAGS="$CWFLAGS -Wpointer-arith"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wredundant-decls], [CWFLAGS="$CWFLAGS -Wredundant-decls"])
AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wshorten-64-to-32], [CWFLAGS="$CWFLAGS -Wshorten-64-to-32"])
AX_CHECK_COMPILE_FLAG([$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 -Wno-type-limits], [CWFLAGS="$CWFLAGS -Wno-type-limits"])
AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$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
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([-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="$oldcflags"
])
AC_SUBST(CFLAGS_MMX)
AC_SUBST(CFLAGS_SSE2)
AC_SUBST(CFLAGS_SSE3)
AC_SUBST(CFLAGS_SSSE3)
AC_SUBST(CFLAGS_SSE41)
AC_SUBST(CFLAGS_AVX)
AC_SUBST(CFLAGS_AVX2)
AC_SUBST(CFLAGS_AESNI)
AC_SUBST(CFLAGS_PCLMUL)
AC_CHECK_HEADERS([sys/mman.h intrin.h])
AC_MSG_CHECKING([if _xgetbv() is available])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[ #include <intrin.h> ]], [[ (void) _xgetbv(0) ]])],
[AC_MSG_RESULT(yes)
AC_DEFINE([HAVE__XGETBV], [1], [_xgetbv() is available])],
[AC_MSG_RESULT(no)])
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
AS_CASE([$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="$CPPFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS"
])
HAVE_AMD64_ASM_V=0
AS_IF([test "$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(__GNUC__) && !defined(__SIZEOF_INT128__)
# error mode(TI) is a gcc extension, and __int128 is not available
#endif
#if defined(__clang__) && !defined(__x86_64__)
# 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 supports only shift 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;
}
]], [[
(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
AS_IF([test "x$EMSCRIPTEN" = "x"],[
AC_CHECK_FUNCS([arc4random arc4random_buf])
AC_CHECK_FUNCS([mmap mlock madvise mprotect explicit_bzero nanosleep])
])
AC_CHECK_FUNCS([posix_memalign getpid])
AC_SUBST([LIBTOOL_EXTRA_FLAGS])
TEST_LDFLAGS=''
AS_IF([test "x$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])
AC_CONFIG_FILES([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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