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libsecp256k1/configure.ac  view on Meta::CPAN

### Define config arguments
###

# In dev mode, we enable all binaries and modules by default but individual options can still be overridden explicitly.
# Check for dev mode first because SECP_SET_DEFAULT needs enable_dev_mode set.
AC_ARG_ENABLE(dev_mode, [], [],
    [enable_dev_mode=no])

AC_ARG_ENABLE(benchmark,
    AS_HELP_STRING([--enable-benchmark],[compile benchmark [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_benchmark], [yes], [yes])])

AC_ARG_ENABLE(coverage,
    AS_HELP_STRING([--enable-coverage],[enable compiler flags to support kcov coverage analysis [default=no]]), [],
    [SECP_SET_DEFAULT([enable_coverage], [no], [no])])

AC_ARG_ENABLE(tests,
    AS_HELP_STRING([--enable-tests],[compile tests [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_tests], [yes], [yes])])

AC_ARG_ENABLE(ctime_tests,
    AS_HELP_STRING([--enable-ctime-tests],[compile constant-time tests [default=yes if valgrind enabled]]), [],
    [SECP_SET_DEFAULT([enable_ctime_tests], [auto], [auto])])

AC_ARG_ENABLE(experimental,
    AS_HELP_STRING([--enable-experimental],[allow experimental configure options [default=no]]), [],
    [SECP_SET_DEFAULT([enable_experimental], [no], [yes])])

AC_ARG_ENABLE(exhaustive_tests,
    AS_HELP_STRING([--enable-exhaustive-tests],[compile exhaustive tests [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_exhaustive_tests], [yes], [yes])])

AC_ARG_ENABLE(examples,
    AS_HELP_STRING([--enable-examples],[compile the examples [default=no]]), [],
    [SECP_SET_DEFAULT([enable_examples], [no], [yes])])

AC_ARG_ENABLE(module_ecdh,
    AS_HELP_STRING([--enable-module-ecdh],[enable ECDH module [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_module_ecdh], [yes], [yes])])

AC_ARG_ENABLE(module_recovery,
    AS_HELP_STRING([--enable-module-recovery],[enable ECDSA pubkey recovery module [default=no]]), [],
    [SECP_SET_DEFAULT([enable_module_recovery], [no], [yes])])

AC_ARG_ENABLE(module_extrakeys,
    AS_HELP_STRING([--enable-module-extrakeys],[enable extrakeys module [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_module_extrakeys], [yes], [yes])])

AC_ARG_ENABLE(module_schnorrsig,
    AS_HELP_STRING([--enable-module-schnorrsig],[enable schnorrsig module [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_module_schnorrsig], [yes], [yes])])

AC_ARG_ENABLE(module_musig,
    AS_HELP_STRING([--enable-module-musig],[enable MuSig2 module [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_module_musig], [yes], [yes])])

AC_ARG_ENABLE(module_ellswift,
    AS_HELP_STRING([--enable-module-ellswift],[enable ElligatorSwift module [default=yes]]), [],
    [SECP_SET_DEFAULT([enable_module_ellswift], [yes], [yes])])

AC_ARG_ENABLE(external_default_callbacks,
    AS_HELP_STRING([--enable-external-default-callbacks],[enable external default callback functions [default=no]]), [],
    [SECP_SET_DEFAULT([enable_external_default_callbacks], [no], [no])])

# Test-only override of the (autodetected by the C code) "widemul" setting.
# Legal values are:
#  * int64 (for [u]int64_t),
#  * int128 (for [unsigned] __int128),
#  * int128_struct (for int128 implemented as a structure),
#  *  and auto (the default).
AC_ARG_WITH([test-override-wide-multiply], [] ,[set_widemul=$withval], [set_widemul=auto])

AC_ARG_WITH([asm], [AS_HELP_STRING([--with-asm=x86_64|arm32|no|auto],
[assembly to use (experimental: arm32) [default=auto]])],[req_asm=$withval], [req_asm=auto])

AC_ARG_WITH([ecmult-window], [AS_HELP_STRING([--with-ecmult-window=SIZE],
[window size for ecmult precomputation for verification, specified as integer in range [2..24].]
[Larger values result in possibly better performance at the cost of an exponentially larger precomputed table.]
[The table will store 2^(SIZE-1) * 64 bytes of data but can be larger in memory due to platform-specific padding and alignment.]
[A window size larger than 15 will require you delete the prebuilt precomputed_ecmult.c file so that it can be rebuilt.]
[For very large window sizes, use "make -j 1" to reduce memory use during compilation.]
[The default value is a reasonable setting for desktop machines (currently 15). [default=15]]
)],
[set_ecmult_window=$withval], [set_ecmult_window=15])

AC_ARG_WITH([ecmult-gen-kb], [AS_HELP_STRING([--with-ecmult-gen-kb=2|22|86],
[The size of the precomputed table for signing in multiples of 1024 bytes (on typical platforms).]
[Larger values result in possibly better signing/keygeneration performance at the cost of a larger table.]
[The default value is a reasonable setting for desktop machines (currently 86). [default=86]]
)],
[set_ecmult_gen_kb=$withval], [set_ecmult_gen_kb=86])

AC_ARG_WITH([valgrind], [AS_HELP_STRING([--with-valgrind=yes|no|auto],
[Build with extra checks for running inside Valgrind [default=auto]]
)],
[req_valgrind=$withval], [req_valgrind=auto])

###
### Handle config options (except for modules)
###

if test x"$req_valgrind" = x"no"; then
  enable_valgrind=no
else
  SECP_VALGRIND_CHECK
  if test x"$has_valgrind" != x"yes"; then
    if test x"$req_valgrind" = x"yes"; then
      AC_MSG_ERROR([Valgrind support explicitly requested but valgrind/memcheck.h header not available])
    fi
    enable_valgrind=no
  else
    enable_valgrind=yes
  fi
fi

if test x"$enable_ctime_tests" = x"auto"; then
    enable_ctime_tests=$enable_valgrind
fi

print_msan_notice=no
if test x"$enable_ctime_tests" = x"yes"; then
  SECP_MSAN_CHECK
  # MSan on Clang >=16 reports unitialized memory in function parameters and return values, even if

libsecp256k1/configure.ac  view on Meta::CPAN

  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DCOMB_BLOCKS=2 -DCOMB_TEETH=5"
  ;;
22)
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DCOMB_BLOCKS=11 -DCOMB_TEETH=6"
  ;;
86)
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DCOMB_BLOCKS=43 -DCOMB_TEETH=6"
  ;;
*)
  AC_MSG_ERROR(['ecmult gen table size not 2, 22 or 86'])
  ;;
esac

if test x"$enable_valgrind" = x"yes"; then
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES $VALGRIND_CPPFLAGS -DVALGRIND"
fi

# Add -Werror and similar flags passed from the outside (for testing, e.g., in CI).
# We don't want to set the user variable CFLAGS in CI because this would disable
# autoconf's logic for setting default CFLAGS, which we would like to test in CI.
SECP_CFLAGS="$SECP_CFLAGS $WERROR_CFLAGS"

###
### Handle module options
###

# Processing must be done in a reverse topological sorting of the dependency graph
# (dependent module first).
if test x"$enable_module_ellswift" = x"yes"; then
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DENABLE_MODULE_ELLSWIFT=1"
fi

if test x"$enable_module_musig" = x"yes"; then
  if test x"$enable_module_schnorrsig" = x"no"; then
    AC_MSG_ERROR([Module dependency error: You have disabled the schnorrsig module explicitly, but it is required by the musig module.])
  fi
  enable_module_schnorrsig=yes
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DENABLE_MODULE_MUSIG=1"
fi

if test x"$enable_module_schnorrsig" = x"yes"; then
  if test x"$enable_module_extrakeys" = x"no"; then
    AC_MSG_ERROR([Module dependency error: You have disabled the extrakeys module explicitly, but it is required by the schnorrsig module.])
  fi
  enable_module_extrakeys=yes
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DENABLE_MODULE_SCHNORRSIG=1"
fi

if test x"$enable_module_extrakeys" = x"yes"; then
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DENABLE_MODULE_EXTRAKEYS=1"
fi

if test x"$enable_module_recovery" = x"yes"; then
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DENABLE_MODULE_RECOVERY=1"
fi

if test x"$enable_module_ecdh" = x"yes"; then
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DENABLE_MODULE_ECDH=1"
fi

if test x"$enable_external_default_callbacks" = x"yes"; then
  SECP_CONFIG_DEFINES="$SECP_CONFIG_DEFINES -DUSE_EXTERNAL_DEFAULT_CALLBACKS=1"
fi

###
### Check for --enable-experimental if necessary
###

if test x"$enable_experimental" = x"no"; then
  if test x"$set_asm" = x"arm32"; then
    AC_MSG_ERROR([ARM32 assembly is experimental. Use --enable-experimental to allow.])
  fi
fi

###
### Generate output
###

AC_CONFIG_FILES([Makefile libsecp256k1.pc])
AC_SUBST(SECP_CFLAGS)
AC_SUBST(SECP_CONFIG_DEFINES)
AM_CONDITIONAL([ENABLE_COVERAGE], [test x"$enable_coverage" = x"yes"])
AM_CONDITIONAL([USE_TESTS], [test x"$enable_tests" != x"no"])
AM_CONDITIONAL([USE_CTIME_TESTS], [test x"$enable_ctime_tests" = x"yes"])
AM_CONDITIONAL([USE_EXHAUSTIVE_TESTS], [test x"$enable_exhaustive_tests" != x"no"])
AM_CONDITIONAL([USE_EXAMPLES], [test x"$enable_examples" != x"no"])
AM_CONDITIONAL([USE_BENCHMARK], [test x"$enable_benchmark" = x"yes"])
AM_CONDITIONAL([ENABLE_MODULE_ECDH], [test x"$enable_module_ecdh" = x"yes"])
AM_CONDITIONAL([ENABLE_MODULE_RECOVERY], [test x"$enable_module_recovery" = x"yes"])
AM_CONDITIONAL([ENABLE_MODULE_EXTRAKEYS], [test x"$enable_module_extrakeys" = x"yes"])
AM_CONDITIONAL([ENABLE_MODULE_SCHNORRSIG], [test x"$enable_module_schnorrsig" = x"yes"])
AM_CONDITIONAL([ENABLE_MODULE_MUSIG], [test x"$enable_module_musig" = x"yes"])
AM_CONDITIONAL([ENABLE_MODULE_ELLSWIFT], [test x"$enable_module_ellswift" = x"yes"])
AM_CONDITIONAL([USE_EXTERNAL_ASM], [test x"$enable_external_asm" = x"yes"])
AM_CONDITIONAL([USE_ASM_ARM], [test x"$set_asm" = x"arm32"])
AM_CONDITIONAL([BUILD_WINDOWS], [test "$build_windows" = "yes"])
AC_SUBST(LIB_VERSION_CURRENT, _LIB_VERSION_CURRENT)
AC_SUBST(LIB_VERSION_REVISION, _LIB_VERSION_REVISION)
AC_SUBST(LIB_VERSION_AGE, _LIB_VERSION_AGE)

AC_OUTPUT

echo
echo "Build Options:"
echo "  with external callbacks = $enable_external_default_callbacks"
echo "  with benchmarks         = $enable_benchmark"
echo "  with tests              = $enable_tests"
echo "  with ctime tests        = $enable_ctime_tests"
echo "  with coverage           = $enable_coverage"
echo "  with examples           = $enable_examples"
echo "  module ecdh             = $enable_module_ecdh"
echo "  module recovery         = $enable_module_recovery"
echo "  module extrakeys        = $enable_module_extrakeys"
echo "  module schnorrsig       = $enable_module_schnorrsig"
echo "  module musig            = $enable_module_musig"
echo "  module ellswift         = $enable_module_ellswift"
echo
echo "  asm                     = $set_asm"
echo "  ecmult window size      = $set_ecmult_window"
echo "  ecmult gen table size   = $set_ecmult_gen_kb KiB"
# Hide test-only options unless they're used.
if test x"$set_widemul" != xauto; then
echo "  wide multiplication     = $set_widemul"
fi
echo
echo "  valgrind                = $enable_valgrind"
echo "  CC                      = $CC"
echo "  CPPFLAGS                = $CPPFLAGS"
echo "  SECP_CFLAGS             = $SECP_CFLAGS"
echo "  CFLAGS                  = $CFLAGS"
echo "  LDFLAGS                 = $LDFLAGS"

if test x"$print_msan_notice" = x"yes"; then
  echo
  echo "Note:"
  echo "  MemorySanitizer detected, tried to add -fno-sanitize-memory-param-retval to SECP_CFLAGS"
  echo "  to avoid false positives in ctime_tests. Pass --disable-ctime-tests to avoid this."
fi

if test x"$enable_experimental" = x"yes"; then
  echo
  echo "WARNING: Experimental build"
  echo "  Experimental features do not have stable APIs or properties, and may not be safe for"
  echo "  production use."
fi