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configure.ac
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AC_PREREQ([2.69])
define(_CLIENT_VERSION_MAJOR, 100)
define(_CLIENT_VERSION_MINOR, 10)
define(_CLIENT_VERSION_BUILD, 1)
define(_CLIENT_VERSION_RC, 0)
define(_CLIENT_VERSION_IS_RELEASE, true)
define(_COPYRIGHT_YEAR, 2024)
define(_COPYRIGHT_HOLDERS,[The %s developers])
define(_COPYRIGHT_HOLDERS_SUBSTITUTION,[[Vkax Core]])
AC_INIT([Vkax Core],m4_join([.], _CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MINOR, _CLIENT_VERSION_BUILD)m4_if(_CLIENT_VERSION_RC, [0], [], [rc]_CLIENT_VERSION_RC),[https://github.com/vkaxproject/vkax/issues],[vkaxcore],[https://www.vkax.xyz/])
AC_CONFIG_SRCDIR([src/validation.cpp])
AC_CONFIG_HEADERS([src/config/dash-config.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([build-aux/m4])
BITCOIN_DAEMON_NAME=vkaxd
BITCOIN_GUI_NAME=vkax-qt
BITCOIN_CLI_NAME=vkax-cli
BITCOIN_TX_NAME=vkax-tx
BITCOIN_WALLET_TOOL_NAME=vkax-wallet
dnl Unless the user specified ARFLAGS, force it to be cr
AC_ARG_VAR(ARFLAGS, [Flags for the archiver, defaults to <cr> if not set])
if test "x${ARFLAGS+set}" != "xset"; then
ARFLAGS="cr"
fi
AC_CANONICAL_HOST
AH_TOP([#ifndef DASH_CONFIG_H])
AH_TOP([#define DASH_CONFIG_H])
AH_BOTTOM([#endif //DASH_CONFIG_H])
dnl faketime breaks configure and is only needed for make. Disable it here.
unset FAKETIME
dnl Automake init set-up and checks
AM_INIT_AUTOMAKE([1.13 no-define subdir-objects foreign])
dnl faketime messes with timestamps and causes configure to be re-run.
dnl --disable-maintainer-mode can be used to bypass this.
AM_MAINTAINER_MODE([enable])
dnl make the compilation flags quiet unless V=1 is used
AM_SILENT_RULES([yes])
dnl Compiler checks (here before libtool).
if test "x${CXXFLAGS+set}" = "xset"; then
CXXFLAGS_overridden=yes
else
CXXFLAGS_overridden=no
fi
AC_PROG_CXX
dnl By default, libtool for mingw refuses to link static libs into a dll for
dnl fear of mixing pic/non-pic objects, and import/export complications. Since
dnl we have those under control, re-enable that functionality.
case $host in
*mingw*)
lt_cv_deplibs_check_method="pass_all"
;;
esac
AC_ARG_ENABLE([c++20],
[AS_HELP_STRING([--enable-c++20],
[enable compilation in c++20 mode (disabled by default)])],
[use_cxx20=$enableval],
[use_cxx20=no])
dnl Require C++17 or C++20 compiler (no GNU extensions)
if test "x$use_cxx20" = xyes; then
AX_CXX_COMPILE_STDCXX([20], [noext], [mandatory])
else
AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory])
fi
dnl Check if -latomic is required for <std::atomic>
CHECK_ATOMIC
dnl Unless the user specified OBJCXX, force it to be the same as CXX. This ensures
dnl that we get the same -std flags for both.
m4_ifdef([AC_PROG_OBJCXX],[
if test "x${OBJCXX+set}" = "x"; then
OBJCXX="${CXX}"
fi
AC_PROG_OBJCXX
])
dnl Since libtool 1.5.2 (released 2004-01-25), on Linux libtool no longer
dnl sets RPATH for any directories in the dynamic linker search path.
dnl See more: https://wiki.debian.org/RpathIssue
LT_PREREQ([1.5.2])
dnl Libtool init checks.
LT_INIT([pic-only win32-dll])
dnl Check/return PATH for base programs.
AC_PATH_TOOL(AR, ar)
AC_PATH_TOOL(RANLIB, ranlib)
AC_PATH_TOOL(STRIP, strip)
AC_PATH_TOOL(GCOV, gcov)
AC_PATH_PROG(LCOV, lcov)
dnl Python 3.5 is specified in .python-version and should be used if available, see doc/dependencies.md
AC_PATH_PROGS([PYTHON], [python3.5 python3.6 python3.7 python3.8 python3 python])
AC_PATH_PROG(GENHTML, genhtml)
AC_PATH_PROG([GIT], [git])
AC_PATH_PROG(CCACHE,ccache)
AC_PATH_PROG(XGETTEXT,xgettext)
AC_PATH_PROG(HEXDUMP,hexdump)
AC_PATH_TOOL(READELF, readelf)
AC_PATH_TOOL(CPPFILT, c++filt)
AC_PATH_TOOL(OBJCOPY, objcopy)
AC_PATH_TOOL(DSYMUTIL, dsymutil)
AC_PATH_PROG(DOXYGEN, doxygen)
AM_CONDITIONAL([HAVE_DOXYGEN], [test -n "$DOXYGEN"])
AC_ARG_VAR(PYTHONPATH, Augments the default search path for python module files)
AC_ARG_ENABLE([wallet],
[AS_HELP_STRING([--disable-wallet],
[disable wallet (enabled by default)])],
[enable_wallet=$enableval],
[enable_wallet=yes])
AC_ARG_WITH([miniupnpc],
[AS_HELP_STRING([--with-miniupnpc],
[enable UPNP (default is yes if libminiupnpc is found)])],
[use_upnp=$withval],
[use_upnp=auto])
AC_ARG_ENABLE([upnp-default],
[AS_HELP_STRING([--enable-upnp-default],
[if UPNP is enabled, turn it on at startup (default is no)])],
[use_upnp_default=$enableval],
[use_upnp_default=no])
AC_ARG_WITH([natpmp],
[AS_HELP_STRING([--with-natpmp],
[enable NAT-PMP (default is yes if libnatpmp is found)])],
[use_natpmp=$withval],
[use_natpmp=auto])
AC_ARG_ENABLE([natpmp-default],
[AS_HELP_STRING([--enable-natpmp-default],
[if NAT-PMP is enabled, turn it on at startup (default is no)])],
[use_natpmp_default=$enableval],
[use_natpmp_default=no])
AC_ARG_ENABLE(tests,
AS_HELP_STRING([--disable-tests],[do not compile tests (default is to compile)]),
[use_tests=$enableval],
[use_tests=yes])
AC_ARG_ENABLE(gui-tests,
AS_HELP_STRING([--disable-gui-tests],[do not compile GUI tests (default is to compile if GUI and tests enabled)]),
[use_gui_tests=$enableval],
[use_gui_tests=$use_tests])
AC_ARG_ENABLE(bench,
AS_HELP_STRING([--disable-bench],[do not compile benchmarks (default is to compile)]),
[use_bench=$enableval],
[use_bench=yes])
AC_ARG_ENABLE([extended-functional-tests],
AS_HELP_STRING([--enable-extended-functional-tests],[enable expensive functional tests when using lcov (default no)]),
[use_extended_functional_tests=$enableval],
[use_extended_functional_tests=no])
AC_ARG_ENABLE([fuzz],
AS_HELP_STRING([--enable-fuzz],
[enable building of fuzz targets (default no). enabling this will disable all other targets]),
[enable_fuzz=$enableval],
[enable_fuzz=no])
AC_ARG_WITH([qrencode],
[AS_HELP_STRING([--with-qrencode],
[enable QR code support (default is yes if qt is enabled and libqrencode is found)])],
[use_qr=$withval],
[use_qr=auto])
AC_ARG_ENABLE([hardening],
[AS_HELP_STRING([--disable-hardening],
[do not attempt to harden the resulting executables (default is to harden when possible)])],
[use_hardening=$enableval],
[use_hardening=auto])
AC_ARG_ENABLE([reduce-exports],
[AS_HELP_STRING([--enable-reduce-exports],
[attempt to reduce exported symbols in the resulting executables (default is no)])],
[use_reduce_exports=$enableval],
[use_reduce_exports=no])
AC_ARG_ENABLE([ccache],
[AS_HELP_STRING([--disable-ccache],
[do not use ccache for building (default is to use if found)])],
[use_ccache=$enableval],
[use_ccache=auto])
dnl Suppress warnings from external headers (e.g. Boost, Qt).
dnl May be useful if warnings from external headers clutter the build output
dnl too much, so that it becomes difficult to spot Bitcoin Core warnings
dnl or if they cause a build failure with --enable-werror.
AC_ARG_ENABLE([suppress-external-warnings],
[AS_HELP_STRING([--enable-suppress-external-warnings],
[Suppress warnings from external headers (default is no)])],
[suppress_external_warnings=$enableval],
[suppress_external_warnings=no])
AC_ARG_ENABLE([lcov],
[AS_HELP_STRING([--enable-lcov],
[enable lcov testing (default is no)])],
[use_lcov=$enableval],
[use_lcov=no])
AC_ARG_ENABLE([lcov-branch-coverage],
[AS_HELP_STRING([--enable-lcov-branch-coverage],
[enable lcov testing branch coverage (default is no)])],
[use_lcov_branch=yes],
[use_lcov_branch=no])
AC_ARG_ENABLE([glibc-back-compat],
[AS_HELP_STRING([--enable-glibc-back-compat],
[enable backwards compatibility with glibc])],
[use_glibc_compat=$enableval],
[use_glibc_compat=no])
AC_ARG_ENABLE([threadlocal],
[AS_HELP_STRING([--enable-threadlocal],
[enable features that depend on the c++ thread_local keyword (currently just thread names in debug logs). (default is to enabled if there is platform support and glibc-back-compat is not enabled)])],
[use_thread_local=$enableval],
[use_thread_local=auto])
AC_ARG_ENABLE([asm],
[AS_HELP_STRING([--disable-asm],
[disable assembly routines (enabled by default)])],
[use_asm=$enableval],
[use_asm=yes])
if test "x$use_asm" = xyes; then
AC_DEFINE(USE_ASM, 1, [Define this symbol to build in assembly routines])
fi
AC_ARG_WITH([system-univalue],
[AS_HELP_STRING([--with-system-univalue],
[Build with system UniValue (default is no)])],
[system_univalue=$withval],
[system_univalue=no]
)
AC_ARG_WITH([openssl],
[AS_HELP_STRING([--with-openssl],
[enable openssl (default is yes if OpenSSL is found)])],
[use_openssl=$withval],
[use_openssl=yes])
AC_ARG_ENABLE([zmq],
[AS_HELP_STRING([--disable-zmq],
[disable ZMQ notifications])],
[use_zmq=$enableval],
[use_zmq=yes])
AC_ARG_ENABLE([bip70],
[AS_HELP_STRING([--disable-bip70],
[disable BIP70 (payment protocol) support in GUI (enabled by default)])],
[enable_bip70=$enableval],
[enable_bip70=auto])
AC_ARG_WITH([protoc-bindir],[AS_HELP_STRING([--with-protoc-bindir=BIN_DIR],[specify protoc bin path])], [protoc_bin_path=$withval], [])
AC_ARG_ENABLE(man,
[AS_HELP_STRING([--disable-man],
[do not install man pages (default is to install)])],,
enable_man=yes)
AM_CONDITIONAL(ENABLE_MAN, test "$enable_man" != no)
# Enable debug
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],
[use compiler flags and macros suited for debugging (default is no)])],
[enable_debug=$enableval],
[enable_debug=no])
# Enable exception stacktraces
AC_ARG_ENABLE([stacktraces],
[AS_HELP_STRING([--enable-stacktraces],
[gather and print exception stack traces (default is yes)])],
[enable_stacktraces=$enableval],
[enable_stacktraces=yes])
# Enable crash hooks
AC_ARG_ENABLE([crash-hooks],
[AS_HELP_STRING([--enable-crash-hooks],
[hook into exception/signal/assert handling to gather stack traces (default is no)])],
[enable_crashhooks=$enableval],
[enable_crashhooks=no])
# Enable in-wallet miner
AC_ARG_ENABLE([miner],
[AS_HELP_STRING([--enable-miner],
[enable in-wallet miner (default is yes)])],
[enable_miner=$enableval],
[enable_miner=yes])
AM_CONDITIONAL([ENABLE_MINER], [test x$enable_miner = xyes])
if test "x$enable_miner" = xyes; then
AC_DEFINE(ENABLE_MINER, 1, [Define this symbol if in-wallet miner should be enabled])
fi
# Enable different -fsanitize options
AC_ARG_WITH([sanitizers],
[AS_HELP_STRING([--with-sanitizers],
[comma separated list of extra sanitizers to build with (default is none enabled)])],
[use_sanitizers=$withval])
# Enable gprof profiling
AC_ARG_ENABLE([gprof],
[AS_HELP_STRING([--enable-gprof],
[use gprof profiling compiler flags (default is no)])],
[enable_gprof=$enableval],
[enable_gprof=no])
# Turn warnings into errors
AC_ARG_ENABLE([werror],
[AS_HELP_STRING([--enable-werror],
[Treat certain compiler warnings as errors (default is no)])],
[enable_werror=$enableval],
[enable_werror=no])
AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""])
if test "x$enable_debug" = xyes; then
# Clear default -g -O2 flags
if test "x$CXXFLAGS_overridden" = xno; then
CXXFLAGS=""
fi
# Disable all optimizations
AX_CHECK_COMPILE_FLAG([-O0], [[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -O0"]],,[[$CXXFLAG_WERROR]])
# Prefer -g3, fall back to -g if that is unavailable.
AX_CHECK_COMPILE_FLAG(
[-g3],
[[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -g3"]],
[AX_CHECK_COMPILE_FLAG([-g],[[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -g"]],,[[$CXXFLAG_WERROR]])],
[[$CXXFLAG_WERROR]])
AX_CHECK_PREPROC_FLAG([-DDEBUG_CORE],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG_CORE"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_PREPROC_FLAG([-DDEBUG_LOCKORDER],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG_LOCKORDER"]],,[[$CXXFLAG_WERROR]])
else
# We always enable at at least -g1 debug info to support proper stacktraces in crash infos
# Stacktraces will be suboptimal due to optimization, but better than nothing. Also, -fno-omit-frame-pointer
# mitigates this a little bit
if test "x$GCC" = xyes; then
CFLAGS="$CFLAGS -g1 -fno-omit-frame-pointer"
fi
if test "x$GXX" = xyes; then
CXXFLAGS="$CXXFLAGS -g1 -fno-omit-frame-pointer"
fi
fi
if test "x$enable_stacktraces" != xno; then
AC_CHECK_HEADERS([execinfo.h], [], [enable_stacktraces=no])
fi
AM_CONDITIONAL([ENABLE_STACKTRACES], [test x$enable_stacktraces = xyes])
if test "x$enable_stacktraces" = xyes; then
AC_DEFINE(ENABLE_STACKTRACES, 1, [Define this symbol if stacktraces should be enabled])
else
enable_crashhooks=no
fi
AM_CONDITIONAL([ENABLE_CRASH_HOOKS], [test x$enable_crashhooks = xyes])
if test "x$enable_crashhooks" = xyes; then
AC_DEFINE(ENABLE_CRASH_HOOKS, 1, [Define this symbol if crash hooks should be enabled])
fi
AX_CHECK_LINK_FLAG([-Wl,-wrap=__cxa_allocate_exception], [LINK_WRAP_SUPPORTED=yes],,,)
AM_CONDITIONAL([CRASH_HOOKS_WRAPPED_CXX_ABI],[test x$LINK_WRAP_SUPPORTED = xyes])
if test x$LINK_WRAP_SUPPORTED = "xyes"; then
AC_DEFINE(CRASH_HOOKS_WRAPPED_CXX_ABI, 1, [Define this symbol to use wrapped CXX ABIs for exception stacktraces])
fi
# Needed for MinGW targets when debug symbols are enabled as compiled objects get very large
AX_CHECK_COMPILE_FLAG([-Wa,-mbig-obj], [CXXFLAGS="$CXXFLAGS -Wa,-mbig-obj"],,,)
if test x$use_sanitizers != x; then
# First check if the compiler accepts flags. If an incompatible pair like
# -fsanitize=address,thread is used here, this check will fail. This will also
# fail if a bad argument is passed, e.g. -fsanitize=undfeined
AX_CHECK_COMPILE_FLAG(
[[-fsanitize=$use_sanitizers]],
[[SANITIZER_CXXFLAGS=-fsanitize=$use_sanitizers]],
[AC_MSG_ERROR([compiler did not accept requested flags])])
# Some compilers (e.g. GCC) require additional libraries like libasan,
# libtsan, libubsan, etc. Make sure linking still works with the sanitize
# flag. This is a separate check so we can give a better error message when
# the sanitize flags are supported by the compiler but the actual sanitizer
# libs are missing.
AX_CHECK_LINK_FLAG(
[[-fsanitize=$use_sanitizers]],
[[SANITIZER_LDFLAGS=-fsanitize=$use_sanitizers]],
[AC_MSG_ERROR([linker did not accept requested flags, you are missing required libraries])],
[],
[AC_LANG_PROGRAM([[
#include <cstdint>
#include <cstddef>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { return 0; }
__attribute__((weak)) // allow for libFuzzer linking
]],[[]])])
fi
ERROR_CXXFLAGS=
if test "x$enable_werror" = "xyes"; then
if test "x$CXXFLAG_WERROR" = "x"; then
AC_MSG_ERROR("enable-werror set but -Werror is not usable")
fi
AX_CHECK_COMPILE_FLAG([-Werror=vla],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=vla"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Werror=switch],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=switch"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Werror=thread-safety],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=thread-safety"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Werror=unused-variable],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=unused-variable"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Werror=date-time],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=date-time"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Werror=return-type],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=return-type"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Werror=conditional-uninitialized],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=conditional-uninitialized"],,[[$CXXFLAG_WERROR]])
dnl -Wsuggest-override is broken with GCC before 9.2
dnl https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78010
AX_CHECK_COMPILE_FLAG([-Werror=suggest-override],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=suggest-override"],,[[$CXXFLAG_WERROR]],
[AC_LANG_SOURCE([[struct A { virtual void f(); }; struct B : A { void f() final; };]])])
AX_CHECK_COMPILE_FLAG([-Werror=unreachable-code-loop-increment],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=unreachable-code-loop-increment"],,[[$CXXFLAG_WERROR]])
fi
if test "x$CXXFLAGS_overridden" = "xno"; then
AX_CHECK_COMPILE_FLAG([-Wall],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wall"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wextra],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wextra"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wformat],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wformat"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wvla],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wvla"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wswitch],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wswitch"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wformat-security],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wformat-security"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wthread-safety],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wthread-safety"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wrange-loop-analysis],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wrange-loop-analysis"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wredundant-decls],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wredundant-decls"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wunused-variable],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wunused-variable"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wunused-member-function],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wunused-member-function"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wdate-time],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wdate-time"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wconditional-uninitialized],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wconditional-uninitialized"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wsuggest-override],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wsuggest-override"],,[[$CXXFLAG_WERROR]],
[AC_LANG_SOURCE([[struct A { virtual void f(); }; struct B : A { void f() final; };]])])
AX_CHECK_COMPILE_FLAG([-Wunreachable-code-loop-increment],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wunreachable-code-loop-increment"],,[[$CXXFLAG_WERROR]])
## Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
## unknown options if any other warning is produced. Test the -Wfoo case, and
## set the -Wno-foo case if it works.
AX_CHECK_COMPILE_FLAG([-Wunused-parameter],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-parameter"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wself-assign],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-self-assign"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wunused-local-typedef],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-local-typedef"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wimplicit-fallthrough],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-implicit-fallthrough"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wdeprecated-copy],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-deprecated-copy"],,[[$CXXFLAG_WERROR]])
fi
dnl Don't allow extended (non-ASCII) symbols in identifiers. This is easier for code review.
AX_CHECK_COMPILE_FLAG([-fno-extended-identifiers],[[CXXFLAGS="$CXXFLAGS -fno-extended-identifiers"]],,[[$CXXFLAG_WERROR]])
enable_sse42=no
enable_sse41=no
enable_avx2=no
enable_x86_shani=no
if test "x$use_asm" = "xyes"; then
dnl Check for optional instruction set support. Enabling these does _not_ imply that all code will
dnl be compiled with them, rather that specific objects/libs may use them after checking for runtime
dnl compatibility.
dnl x86
AX_CHECK_COMPILE_FLAG([-msse4.2],[[SSE42_CXXFLAGS="-msse4.2"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-msse4.1],[[SSE41_CXXFLAGS="-msse4.1"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-mavx -mavx2],[[AVX2_CXXFLAGS="-mavx -mavx2"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-msse4 -msha],[[X86_SHANI_CXXFLAGS="-msse4 -msha"]],,[[$CXXFLAG_WERROR]])
TEMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $SSE42_CXXFLAGS"
AC_MSG_CHECKING(for SSE4.2 intrinsics)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdint.h>
#if defined(_MSC_VER)
#include <intrin.h>
#elif defined(__GNUC__) && defined(__SSE4_2__)
#include <nmmintrin.h>
#endif
]],[[
uint64_t l = 0;
l = _mm_crc32_u8(l, 0);
l = _mm_crc32_u32(l, 0);
l = _mm_crc32_u64(l, 0);
return l;
]])],
[ AC_MSG_RESULT(yes); enable_sse42=yes],
[ AC_MSG_RESULT(no)]
)
CXXFLAGS="$TEMP_CXXFLAGS"
TEMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $SSE41_CXXFLAGS"
AC_MSG_CHECKING(for SSE4.1 intrinsics)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdint.h>
#include <immintrin.h>
]],[[
__m128i l = _mm_set1_epi32(0);
return _mm_extract_epi32(l, 3);
]])],
[ AC_MSG_RESULT(yes); enable_sse41=yes; AC_DEFINE(ENABLE_SSE41, 1, [Define this symbol to build code that uses SSE4.1 intrinsics]) ],
[ AC_MSG_RESULT(no)]
)
CXXFLAGS="$TEMP_CXXFLAGS"
TEMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $AVX2_CXXFLAGS"
AC_MSG_CHECKING(for AVX2 intrinsics)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdint.h>
#include <immintrin.h>
]],[[
__m256i l = _mm256_set1_epi32(0);
return _mm256_extract_epi32(l, 7);
]])],
[ AC_MSG_RESULT(yes); enable_avx2=yes; AC_DEFINE(ENABLE_AVX2, 1, [Define this symbol to build code that uses AVX2 intrinsics]) ],
[ AC_MSG_RESULT(no)]
)
CXXFLAGS="$TEMP_CXXFLAGS"
TEMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $X86_SHANI_CXXFLAGS"
AC_MSG_CHECKING(for x86 SHA-NI intrinsics)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdint.h>
#include <immintrin.h>
]],[[
__m128i i = _mm_set1_epi32(0);
__m128i j = _mm_set1_epi32(1);
__m128i k = _mm_set1_epi32(2);
return _mm_extract_epi32(_mm_sha256rnds2_epu32(i, i, k), 0);
]])],
[ AC_MSG_RESULT(yes); enable_x86_shani=yes; AC_DEFINE(ENABLE_X86_SHANI, 1, [Define this symbol to build code that uses x86 SHA-NI intrinsics]) ],
[ AC_MSG_RESULT(no)]
)
CXXFLAGS="$TEMP_CXXFLAGS"
# ARM
AX_CHECK_COMPILE_FLAG([-march=armv8-a+crc+crypto],[[ARM_CRC_CXXFLAGS="-march=armv8-a+crc+crypto"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-march=armv8-a+crc+crypto], [ARM_SHANI_CXXFLAGS="-march=armv8-a+crc+crypto"], [], [$CXXFLAG_WERROR])
TEMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $ARM_CRC_CXXFLAGS"
AC_MSG_CHECKING(for ARMv8 CRC32 intrinsics)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <arm_acle.h>
#include <arm_neon.h>
]],[[
#ifdef __aarch64__
__crc32cb(0, 0); __crc32ch(0, 0); __crc32cw(0, 0); __crc32cd(0, 0);
vmull_p64(0, 0);
#else
#error "crc32c library does not support hardware acceleration on 32-bit ARM"
#endif
]])],
[ AC_MSG_RESULT(yes); enable_arm_crc=yes; ],
[ AC_MSG_RESULT(no)]
)
CXXFLAGS="$TEMP_CXXFLAGS"
TEMP_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $ARM_SHANI_CXXFLAGS"
AC_MSG_CHECKING([for ARMv8 SHA-NI intrinsics])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <arm_acle.h>
#include <arm_neon.h>
]],[[
uint32x4_t a, b, c;
vsha256h2q_u32(a, b, c);
vsha256hq_u32(a, b, c);
vsha256su0q_u32(a, b);
vsha256su1q_u32(a, b, c);
]])],
[ AC_MSG_RESULT([yes]); enable_arm_shani=yes; AC_DEFINE([ENABLE_ARM_SHANI], [1], [Define this symbol to build code that uses ARMv8 SHA-NI intrinsics]) ],
[ AC_MSG_RESULT([no])]
)
CXXFLAGS="$TEMP_CXXFLAGS"
fi
CPPFLAGS="$CPPFLAGS -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS"
AC_ARG_WITH([utils],
[AS_HELP_STRING([--with-utils],
[build vkax-cli vkax-tx vkax-wallet (default=yes)])],
[build_bitcoin_utils=$withval],
[build_bitcoin_utils=yes])
AC_ARG_ENABLE([util-cli],
[AS_HELP_STRING([--enable-util-cli],
[build vkax-cli])],
[build_bitcoin_cli=$enableval],
[build_bitcoin_cli=$build_bitcoin_utils])
AC_ARG_ENABLE([util-tx],
[AS_HELP_STRING([--enable-util-tx],
[build vkax-tx])],
[build_bitcoin_tx=$enableval],
[build_bitcoin_tx=$build_bitcoin_utils])
AC_ARG_ENABLE([util-wallet],
[AS_HELP_STRING([--enable-util-wallet],
[build vkax-wallet])],
[build_bitcoin_wallet=$enableval],
[build_bitcoin_wallet=$build_bitcoin_utils])
AC_ARG_WITH([libs],
[AS_HELP_STRING([--with-libs],
[build libraries (default=yes)])],
[build_bitcoin_libs=$withval],
[build_bitcoin_libs=yes])
AC_ARG_WITH([daemon],
[AS_HELP_STRING([--with-daemon],
[build vkaxd daemon (default=yes)])],
[build_bitcoind=$withval],
[build_bitcoind=yes])
use_pkgconfig=yes
case $host in
*mingw*)
#pkgconfig does more harm than good with MinGW
use_pkgconfig=no
TARGET_OS=windows
AC_CHECK_LIB([mingwthrd], [main],, AC_MSG_ERROR(libmingwthrd missing))
AC_CHECK_LIB([kernel32], [main],, AC_MSG_ERROR(libkernel32 missing))
AC_CHECK_LIB([user32], [main],, AC_MSG_ERROR(libuser32 missing))
AC_CHECK_LIB([gdi32], [main],, AC_MSG_ERROR(libgdi32 missing))
AC_CHECK_LIB([comdlg32], [main],, AC_MSG_ERROR(libcomdlg32 missing))
AC_CHECK_LIB([winspool], [main],, AC_MSG_ERROR(libwinspool missing))
AC_CHECK_LIB([winmm], [main],, AC_MSG_ERROR(libwinmm missing))
AC_CHECK_LIB([shell32], [main],, AC_MSG_ERROR(libshell32 missing))
AC_CHECK_LIB([comctl32], [main],, AC_MSG_ERROR(libcomctl32 missing))
AC_CHECK_LIB([ole32], [main],, AC_MSG_ERROR(libole32 missing))
AC_CHECK_LIB([oleaut32], [main],, AC_MSG_ERROR(liboleaut32 missing))
AC_CHECK_LIB([uuid], [main],, AC_MSG_ERROR(libuuid missing))
AC_CHECK_LIB([rpcrt4], [main],, AC_MSG_ERROR(librpcrt4 missing))
AC_CHECK_LIB([advapi32], [main],, AC_MSG_ERROR(libadvapi32 missing))
AC_CHECK_LIB([ws2_32], [main],, AC_MSG_ERROR(libws2_32 missing))
AC_CHECK_LIB([mswsock], [main],, AC_MSG_ERROR(libmswsock missing))
AC_CHECK_LIB([shlwapi], [main],, AC_MSG_ERROR(libshlwapi missing))
AC_CHECK_LIB([iphlpapi], [main],, AC_MSG_ERROR(libiphlpapi missing))
AC_CHECK_LIB([crypt32], [main],, AC_MSG_ERROR(libcrypt32 missing))
# -static is interpreted by libtool, where it has a different meaning.
# In libtool-speak, it's -all-static.
AX_CHECK_LINK_FLAG([[-static]],[LIBTOOL_APP_LDFLAGS="$LIBTOOL_APP_LDFLAGS -all-static"])
AC_PATH_PROG([MAKENSIS], [makensis], none)
if test x$MAKENSIS = xnone; then
AC_MSG_WARN("makensis not found. Cannot create installer.")
fi
AC_PATH_TOOL(WINDRES, windres, none)
if test x$WINDRES = xnone; then
AC_MSG_ERROR("windres not found")
fi
CPPFLAGS="$CPPFLAGS -D_MT -DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB -D_WIN32_WINNT=0x0601"
dnl libtool insists upon adding -nostdlib and a list of objects/libs to link against.
dnl That breaks our ability to build dll's with static libgcc/libstdc++/libssp. Override
dnl its command here, with the predeps/postdeps removed, and -static inserted. Postdeps are
dnl also overridden to prevent their insertion later.
dnl This should only affect dll's.
archive_cmds_CXX="\$CC -shared \$libobjs \$deplibs \$compiler_flags -static -o \$output_objdir/\$soname \${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker \$lib"
postdeps_CXX=
dnl We require Windows 7 (NT 6.1) or later
AX_CHECK_LINK_FLAG([[-Wl,--major-subsystem-version -Wl,6 -Wl,--minor-subsystem-version -Wl,1]],[LDFLAGS="$LDFLAGS -Wl,--major-subsystem-version -Wl,6 -Wl,--minor-subsystem-version -Wl,1"],,[[$LDFLAG_WERROR]])
;;
*darwin*)
TARGET_OS=darwin
if test x$cross_compiling != xyes; then
BUILD_OS=darwin
AC_PATH_PROGS([RSVG_CONVERT], [rsvg-convert rsvg],rsvg-convert)
AC_CHECK_PROG([BREW],brew, brew)
if test x$BREW = xbrew; then
dnl These Homebrew packages may be keg-only, meaning that they won't be found
dnl in expected paths because they may conflict with system files. Ask
dnl Homebrew where each one is located, then adjust paths accordingly.
dnl It's safe to add these paths even if the functionality is disabled by
dnl the user (--without-wallet or --without-gui for example).
bdb_prefix=`$BREW --prefix berkeley-db4 2>/dev/null`
qt5_prefix=`$BREW --prefix qt5 2>/dev/null`
if test x$use_openssl != xno; then
openssl_prefix=`$BREW --prefix openssl 2>/dev/null`
if test x$openssl_prefix != x; then
PKG_CONFIG_PATH="$openssl_prefix/lib/pkgconfig:$PKG_CONFIG_PATH"
export PKG_CONFIG_PATH
fi
fi
if test x$bdb_prefix != x; then
CPPFLAGS="$CPPFLAGS -I$bdb_prefix/include"
LIBS="$LIBS -L$bdb_prefix/lib"
fi
if test x$qt5_prefix != x; then
PKG_CONFIG_PATH="$qt5_prefix/lib/pkgconfig:$PKG_CONFIG_PATH"
export PKG_CONFIG_PATH
fi
case $host in
*aarch64*)
dnl The preferred Homebrew prefix for Apple Silicon is /opt/homebrew.
dnl Therefore, as we do not use pkg-config to detect miniupnpc and libnatpmp
dnl packages, we should set the CPPFLAGS and LDFLAGS variables for them
dnl explicitly.
if test "x$use_upnp" != xno && $BREW list --versions miniupnpc >/dev/null; then
miniupnpc_prefix=$($BREW --prefix miniupnpc 2>/dev/null)
if test "x$suppress_external_warnings" != xno; then
CPPFLAGS="$CPPFLAGS -isystem $miniupnpc_prefix/include"
else
CPPFLAGS="$CPPFLAGS -I$miniupnpc_prefix/include"
fi
LDFLAGS="$LDFLAGS -L$miniupnpc_prefix/lib"
fi
if test "x$use_natpmp" != xno && $BREW list --versions libnatpmp >/dev/null; then
libnatpmp_prefix=$($BREW --prefix libnatpmp 2>/dev/null)
if test "x$suppress_external_warnings" != xno; then
CPPFLAGS="$CPPFLAGS -isystem $libnatpmp_prefix/include"
else
CPPFLAGS="$CPPFLAGS -I$libnatpmp_prefix/include"
fi
LDFLAGS="$LDFLAGS -L$libnatpmp_prefix/lib"
fi
;;
esac
fi
else
case $build_os in
*darwin*)
BUILD_OS=darwin
;;
*)
AC_PATH_TOOL([DSYMUTIL], [dsymutil], dsymutil)
AC_PATH_TOOL([INSTALLNAMETOOL], [install_name_tool], install_name_tool)
AC_PATH_TOOL([OTOOL], [otool], otool)
AC_PATH_PROGS([XORRISOFS], [xorrisofs], xorrisofs)
AC_PATH_PROGS([DMG], [dmg], dmg)
AC_PATH_PROGS([RSVG_CONVERT], [rsvg-convert rsvg],rsvg-convert)
AC_PATH_PROGS([IMAGEMAGICK_CONVERT], [convert],convert)
AC_PATH_PROGS([TIFFCP], [tiffcp],tiffcp)
dnl libtool will try to strip the static lib, which is a problem for
dnl cross-builds because strip attempts to call a hard-coded ld,
dnl which may not exist in the path. Stripping the .a is not
dnl necessary, so just disable it.
old_striplib=
;;
esac
fi
AX_CHECK_LINK_FLAG([[-Wl,-headerpad_max_install_names]], [LDFLAGS="$LDFLAGS -Wl,-headerpad_max_install_names"])
CPPFLAGS="$CPPFLAGS -DMAC_OSX -DOBJC_OLD_DISPATCH_PROTOTYPES=0"
OBJCXXFLAGS="$CXXFLAGS"
;;
*android*)
dnl make sure android stays above linux for hosts like *linux-android*
TARGET_OS=android
;;
*linux*)
TARGET_OS=linux
;;
esac
if test x$use_pkgconfig = xyes; then
m4_ifndef([PKG_PROG_PKG_CONFIG], [AC_MSG_ERROR(PKG_PROG_PKG_CONFIG macro not found. Please install pkg-config and re-run autogen.sh.)])
m4_ifdef([PKG_PROG_PKG_CONFIG], [
PKG_PROG_PKG_CONFIG
if test x"$PKG_CONFIG" = "x"; then
AC_MSG_ERROR(pkg-config not found.)
fi
])
fi
if test x$use_extended_functional_tests != xno; then
AC_SUBST(EXTENDED_FUNCTIONAL_TESTS, --extended)
fi
if test x$use_lcov = xyes; then
if test x$LCOV = x; then
AC_MSG_ERROR("lcov testing requested but lcov not found")
fi
if test x$GCOV = x; then
AC_MSG_ERROR("lcov testing requested but gcov not found")
fi
if test x$PYTHON = x; then
AC_MSG_ERROR("lcov testing requested but python not found")
fi
if test x$GENHTML = x; then
AC_MSG_ERROR("lcov testing requested but genhtml not found")
fi
LCOV="$LCOV --gcov-tool=$GCOV"
AX_CHECK_LINK_FLAG([[--coverage]], [LDFLAGS="$LDFLAGS --coverage"],
[AC_MSG_ERROR("lcov testing requested but --coverage linker flag does not work")])
AX_CHECK_COMPILE_FLAG([--coverage],[CXXFLAGS="$CXXFLAGS --coverage"],
[AC_MSG_ERROR("lcov testing requested but --coverage flag does not work")])
AC_DEFINE(USE_COVERAGE, 1, [Define this symbol if coverage is enabled])
CXXFLAGS="$CXXFLAGS -Og"
fi
if test x$use_lcov_branch != xno; then
AC_SUBST(LCOV_OPTS, "$LCOV_OPTS --rc lcov_branch_coverage=1")
fi
dnl Check for endianness
AC_C_BIGENDIAN
dnl Check for pthread compile/link requirements
AX_PTHREAD
# The following macro will add the necessary defines to dash-config.h, but
# they also need to be passed down to any subprojects. Pull the results out of
# the cache and add them to CPPFLAGS.
AC_SYS_LARGEFILE
# detect POSIX or GNU variant of strerror_r
AC_FUNC_STRERROR_R
if test x$ac_cv_sys_file_offset_bits != x &&
test x$ac_cv_sys_file_offset_bits != xno &&
test x$ac_cv_sys_file_offset_bits != xunknown; then
CPPFLAGS="$CPPFLAGS -D_FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits"
fi
if test x$ac_cv_sys_large_files != x &&
test x$ac_cv_sys_large_files != xno &&
test x$ac_cv_sys_large_files != xunknown; then
CPPFLAGS="$CPPFLAGS -D_LARGE_FILES=$ac_cv_sys_large_files"
fi
AX_GCC_FUNC_ATTRIBUTE([visibility])
AX_GCC_FUNC_ATTRIBUTE([dllexport])
AX_GCC_FUNC_ATTRIBUTE([dllimport])
if test x$use_glibc_compat != xno; then
#__fdelt_chk's params and return type have changed from long unsigned int to long int.
# See which one is present here.
AC_MSG_CHECKING(__fdelt_chk type)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef _FORTIFY_SOURCE
#undef _FORTIFY_SOURCE
#endif
#define _FORTIFY_SOURCE 2
#include <sys/select.h>
extern "C" long unsigned int __fdelt_warn(long unsigned int);]],[[]])],
[ fdelt_type="long unsigned int"],
[ fdelt_type="long int"])
AC_MSG_RESULT($fdelt_type)
AC_DEFINE_UNQUOTED(FDELT_TYPE, $fdelt_type,[parameter and return value type for __fdelt_chk])
else
AC_SEARCH_LIBS([clock_gettime],[rt])
fi
if test "x$enable_gprof" = xyes; then
dnl -pg is incompatible with -pie. Since hardening and profiling together doesn't make sense,
dnl we simply make them mutually exclusive here. Additionally, hardened toolchains may force
dnl -pie by default, in which case it needs to be turned off with -no-pie.
if test x$use_hardening = xyes; then
AC_MSG_ERROR(gprof profiling is not compatible with hardening. Reconfigure with --disable-hardening or --disable-gprof)
fi
use_hardening=no
AX_CHECK_COMPILE_FLAG([-pg],[GPROF_CXXFLAGS="-pg"],
[AC_MSG_ERROR(gprof profiling requested but not available)], [[$CXXFLAG_WERROR]])
AX_CHECK_LINK_FLAG([[-no-pie]], [GPROF_LDFLAGS="-no-pie"])
AX_CHECK_LINK_FLAG([[-pg]],[GPROF_LDFLAGS="$GPROF_LDFLAGS -pg"],
[AC_MSG_ERROR(gprof profiling requested but not available)], [[$GPROF_LDFLAGS]])
fi
if test x$TARGET_OS != xwindows; then
# All windows code is PIC, forcing it on just adds useless compile warnings
AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
fi
# All versions of gcc that we commonly use for building are subject to bug
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348. To work around that, set
# -fstack-reuse=none for all gcc builds. (Only gcc understands this flag)
AX_CHECK_COMPILE_FLAG([-fstack-reuse=none],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-reuse=none"])
if test x$use_hardening != xno; then
use_hardening=yes
AX_CHECK_COMPILE_FLAG([-Wstack-protector],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -Wstack-protector"])
AX_CHECK_COMPILE_FLAG([-fstack-protector-all],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-protector-all"])
# When enable_debug is yes, all optimizations are disabled.
# However, FORTIFY_SOURCE requires that there is some level of optimization, otherwise it does nothing and just creates a compiler warning.
# Since FORTIFY_SOURCE is a no-op without optimizations, do not enable it when enable_debug is yes.
if test x$enable_debug != xyes; then
AX_CHECK_PREPROC_FLAG([-D_FORTIFY_SOURCE=2],[
AX_CHECK_PREPROC_FLAG([-U_FORTIFY_SOURCE],[
HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -U_FORTIFY_SOURCE"
])
HARDENED_CPPFLAGS="$HARDENED_CPPFLAGS -D_FORTIFY_SOURCE=2"
])
fi
AX_CHECK_LINK_FLAG([[-Wl,--dynamicbase]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--dynamicbase"])
AX_CHECK_LINK_FLAG([[-Wl,--nxcompat]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--nxcompat"])
AX_CHECK_LINK_FLAG([[-Wl,--high-entropy-va]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--high-entropy-va"])
AX_CHECK_LINK_FLAG([[-Wl,-z,relro]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-z,relro"])
AX_CHECK_LINK_FLAG([[-Wl,-z,now]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-z,now"])
AX_CHECK_LINK_FLAG([[-fPIE -pie]], [PIE_FLAGS="-fPIE"; HARDENED_LDFLAGS="$HARDENED_LDFLAGS -pie"],, [[$CXXFLAG_WERROR]])
case $host in
*mingw*)
AC_CHECK_LIB([ssp], [main],, AC_MSG_ERROR(libssp missing))
;;
esac
fi
dnl These flags are specific to ld64, and may cause issues with other linkers.
dnl For example: GNU ld will interpret -dead_strip as -de and then try and use
dnl "ad_strip" as the symbol for the entry point.
if test x$TARGET_OS = xdarwin; then
AX_CHECK_LINK_FLAG([[-Wl,-dead_strip]], [LDFLAGS="$LDFLAGS -Wl,-dead_strip"])
AX_CHECK_LINK_FLAG([[-Wl,-dead_strip_dylibs]], [LDFLAGS="$LDFLAGS -Wl,-dead_strip_dylibs"])
AX_CHECK_LINK_FLAG([[-Wl,-bind_at_load]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-bind_at_load"])
fi
AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h])
# FD_ZERO may be dependent on a declaration of memcpy, e.g. in SmartOS
# check that it fails to build without memcpy, then that it builds with
AC_MSG_CHECKING(FD_ZERO memcpy dependence)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <cstddef>
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
]],[[
#if HAVE_SYS_SELECT_H
fd_set fds;
FD_ZERO(&fds);
#endif
]])],
[ AC_MSG_RESULT(no) ],
[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <cstring>
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
]], [[
#if HAVE_SYS_SELECT_H
fd_set fds;
FD_ZERO(&fds);
#endif
]])],
[ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_CSTRING_DEPENDENT_FD_ZERO, 1, [Define this symbol if FD_ZERO is dependent of a memcpy declaration being available]) ],
[ AC_MSG_ERROR(failed with cstring include) ]
)
]
)
AC_CHECK_DECLS([getifaddrs, freeifaddrs],,,
[#include <sys/types.h>
#include <ifaddrs.h>]
)
AC_CHECK_DECLS([strnlen])
# Check for daemon(3), unrelated to --with-daemon (although used by it)
AC_CHECK_DECLS([daemon])
AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
[#if HAVE_ENDIAN_H
#include <endian.h>
#elif HAVE_SYS_ENDIAN_H
#include <sys/endian.h>
#endif])
AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64],,,
[#if HAVE_BYTESWAP_H
#include <byteswap.h>
#endif])
AC_CHECK_DECLS([__builtin_clz, __builtin_clzl, __builtin_clzll])
dnl Check for mallopt(M_ARENA_MAX) (to set glibc arenas)
AC_MSG_CHECKING(for mallopt M_ARENA_MAX)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <malloc.h>]],
[[ mallopt(M_ARENA_MAX, 1); ]])],
[ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MALLOPT_ARENA_MAX, 1,[Define this symbol if you have mallopt with M_ARENA_MAX]) ],
[ AC_MSG_RESULT(no)]
)
dnl Check for malloc_info (for memory statistics information in getmemoryinfo)