X-Git-Url: https://repo.jachan.dev/secp256k1.git/blobdiff_plain/b549d3d5f741aecf3c454b7abffecfd56c70de9d..HEAD:/configure.ac diff --git a/configure.ac b/configure.ac index 68c45a5..9969cfa 100644 --- a/configure.ac +++ b/configure.ac @@ -7,9 +7,10 @@ AH_TOP([#ifndef LIBSECP256K1_CONFIG_H]) AH_TOP([#define LIBSECP256K1_CONFIG_H]) AH_BOTTOM([#endif /*LIBSECP256K1_CONFIG_H*/]) AM_INIT_AUTOMAKE([foreign subdir-objects]) + LT_INIT -dnl make the compilation flags quiet unless V=1 is used +# Make the compilation flags quiet unless V=1 is used. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) PKG_PROG_PKG_CONFIG @@ -17,13 +18,16 @@ PKG_PROG_PKG_CONFIG AC_PATH_TOOL(AR, ar) AC_PATH_TOOL(RANLIB, ranlib) AC_PATH_TOOL(STRIP, strip) -AX_PROG_CC_FOR_BUILD - -if test "x$CFLAGS" = "x"; then - CFLAGS="-g" -fi +# Save definition of AC_PROG_CC because AM_PROG_CC_C_O in automake<=1.13 will +# redefine AC_PROG_CC to exit with an error, which avoids the user calling it +# accidently and screwing up the effect of AM_PROG_CC_C_O. However, we'll need +# AC_PROG_CC later on in AX_PROG_CC_FOR_BUILD, where its usage is fine, and +# we'll carefully make sure not to call AC_PROG_CC anywhere else. +m4_copy([AC_PROG_CC], [saved_AC_PROG_CC]) AM_PROG_CC_C_O +# Restore AC_PROG_CC +m4_rename_force([saved_AC_PROG_CC], [AC_PROG_CC]) AC_PROG_CC_C89 if test x"$ac_cv_prog_cc_c89" = x"no"; then @@ -34,27 +38,26 @@ AM_PROG_AS case $host_os in *darwin*) if test x$cross_compiling != xyes; then - AC_PATH_PROG([BREW],brew,) - if test x$BREW != x; then - dnl These Homebrew packages may be keg-only, meaning that they won't be found - dnl in expected paths because they may conflict with system files. Ask - dnl Homebrew where each one is located, then adjust paths accordingly. - + AC_CHECK_PROG([BREW], brew, brew) + if test x$BREW = xbrew; then + # These Homebrew packages may be keg-only, meaning that they won't be found + # in expected paths because they may conflict with system files. Ask + # Homebrew where each one is located, then adjust paths accordingly. openssl_prefix=`$BREW --prefix openssl 2>/dev/null` - gmp_prefix=`$BREW --prefix gmp 2>/dev/null` + valgrind_prefix=`$BREW --prefix valgrind 2>/dev/null` if test x$openssl_prefix != x; then PKG_CONFIG_PATH="$openssl_prefix/lib/pkgconfig:$PKG_CONFIG_PATH" export PKG_CONFIG_PATH + CRYPTO_CPPFLAGS="-I$openssl_prefix/include" fi - if test x$gmp_prefix != x; then - GMP_CPPFLAGS="-I$gmp_prefix/include" - GMP_LIBS="-L$gmp_prefix/lib" + if test x$valgrind_prefix != x; then + VALGRIND_CPPFLAGS="-I$valgrind_prefix/include" fi else - AC_PATH_PROG([PORT],port,) - dnl if homebrew isn't installed and macports is, add the macports default paths - dnl as a last resort. - if test x$PORT != x; then + AC_CHECK_PROG([PORT], port, port) + # If homebrew isn't installed and macports is, add the macports default paths + # as a last resort. + if test x$PORT = xport; then CPPFLAGS="$CPPFLAGS -isystem /opt/local/include" LDFLAGS="$LDFLAGS -L/opt/local/lib" fi @@ -63,136 +66,163 @@ case $host_os in ;; esac -CFLAGS="$CFLAGS -W" - -warn_CFLAGS="-std=c89 -pedantic -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes -Wno-unused-function -Wno-long-long -Wno-overlength-strings" -saved_CFLAGS="$CFLAGS" -CFLAGS="$CFLAGS $warn_CFLAGS" -AC_MSG_CHECKING([if ${CC} supports ${warn_CFLAGS}]) -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], - [ AC_MSG_RESULT([yes]) ], - [ AC_MSG_RESULT([no]) - CFLAGS="$saved_CFLAGS" - ]) - -saved_CFLAGS="$CFLAGS" -CFLAGS="$CFLAGS -fvisibility=hidden" -AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden]) -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], - [ AC_MSG_RESULT([yes]) ], - [ AC_MSG_RESULT([no]) - CFLAGS="$saved_CFLAGS" - ]) +# Try if some desirable compiler flags are supported and append them to SECP_CFLAGS. +# +# These are our own flags, so we append them to our own SECP_CFLAGS variable (instead of CFLAGS) as +# recommended in the automake manual (Section "Flag Variables Ordering"). CFLAGS belongs to the user +# and we are not supposed to touch it. In the Makefile, we will need to ensure that SECP_CFLAGS +# is prepended to CFLAGS when invoking the compiler so that the user always has the last word (flag). +# +# Another advantage of not touching CFLAGS is that the contents of CFLAGS will be picked up by +# libtool for compiling helper executables. For example, when compiling for Windows, libtool will +# generate entire wrapper executables (instead of simple wrapper scripts as on Unix) to ensure +# proper operation of uninstalled programs linked by libtool against the uninstalled shared library. +# These executables are compiled from C source file for which our flags may not be appropriate, +# e.g., -std=c89 flag has lead to undesirable warnings in the past. +# +# TODO We should analogously not touch CPPFLAGS and LDFLAGS but currently there are no issues. +AC_DEFUN([SECP_TRY_APPEND_DEFAULT_CFLAGS], [ + # Try to append -Werror=unknown-warning-option to CFLAGS temporarily. Otherwise clang will + # not error out if it gets unknown warning flags and the checks here will always succeed + # no matter if clang knows the flag or not. + SECP_TRY_APPEND_DEFAULT_CFLAGS_saved_CFLAGS="$CFLAGS" + SECP_TRY_APPEND_CFLAGS([-Werror=unknown-warning-option], CFLAGS) + + SECP_TRY_APPEND_CFLAGS([-std=c89 -pedantic -Wno-long-long -Wnested-externs -Wshadow -Wstrict-prototypes -Wundef], $1) # GCC >= 3.0, -Wlong-long is implied by -pedantic. + SECP_TRY_APPEND_CFLAGS([-Wno-overlength-strings], $1) # GCC >= 4.2, -Woverlength-strings is implied by -pedantic. + SECP_TRY_APPEND_CFLAGS([-Wall], $1) # GCC >= 2.95 and probably many other compilers + SECP_TRY_APPEND_CFLAGS([-Wno-unused-function], $1) # GCC >= 3.0, -Wunused-function is implied by -Wall. + SECP_TRY_APPEND_CFLAGS([-Wextra], $1) # GCC >= 3.4, this is the newer name of -W, which we don't use because older GCCs will warn about unused functions. + SECP_TRY_APPEND_CFLAGS([-Wcast-align], $1) # GCC >= 2.95 + SECP_TRY_APPEND_CFLAGS([-Wcast-align=strict], $1) # GCC >= 8.0 + SECP_TRY_APPEND_CFLAGS([-Wconditional-uninitialized], $1) # Clang >= 3.0 only + SECP_TRY_APPEND_CFLAGS([-fvisibility=hidden], $1) # GCC >= 4.0 + + CFLAGS="$SECP_TRY_APPEND_DEFAULT_CFLAGS_saved_CFLAGS" +]) +SECP_TRY_APPEND_DEFAULT_CFLAGS(SECP_CFLAGS) + +### +### Define config arguments +### AC_ARG_ENABLE(benchmark, - AS_HELP_STRING([--enable-benchmark],[compile benchmark (default is yes)]), + AS_HELP_STRING([--enable-benchmark],[compile benchmark [default=yes]]), [use_benchmark=$enableval], [use_benchmark=yes]) AC_ARG_ENABLE(coverage, - AS_HELP_STRING([--enable-coverage],[enable compiler flags to support kcov coverage analysis]), + AS_HELP_STRING([--enable-coverage],[enable compiler flags to support kcov coverage analysis [default=no]]), [enable_coverage=$enableval], [enable_coverage=no]) AC_ARG_ENABLE(tests, - AS_HELP_STRING([--enable-tests],[compile tests (default is yes)]), + AS_HELP_STRING([--enable-tests],[compile tests [default=yes]]), [use_tests=$enableval], [use_tests=yes]) AC_ARG_ENABLE(openssl_tests, - AS_HELP_STRING([--enable-openssl-tests],[enable OpenSSL tests, if OpenSSL is available (default is auto)]), + AS_HELP_STRING([--enable-openssl-tests],[enable OpenSSL tests [default=auto]]), [enable_openssl_tests=$enableval], [enable_openssl_tests=auto]) AC_ARG_ENABLE(experimental, - AS_HELP_STRING([--enable-experimental],[allow experimental configure options (default is no)]), + AS_HELP_STRING([--enable-experimental],[allow experimental configure options [default=no]]), [use_experimental=$enableval], [use_experimental=no]) AC_ARG_ENABLE(exhaustive_tests, - AS_HELP_STRING([--enable-exhaustive-tests],[compile exhaustive tests (default is yes)]), + AS_HELP_STRING([--enable-exhaustive-tests],[compile exhaustive tests [default=yes]]), [use_exhaustive_tests=$enableval], [use_exhaustive_tests=yes]) -AC_ARG_ENABLE(endomorphism, - AS_HELP_STRING([--enable-endomorphism],[enable endomorphism (default is no)]), - [use_endomorphism=$enableval], - [use_endomorphism=no]) - AC_ARG_ENABLE(ecmult_static_precomputation, - AS_HELP_STRING([--enable-ecmult-static-precomputation],[enable precomputed ecmult table for signing (default is yes)]), + AS_HELP_STRING([--enable-ecmult-static-precomputation],[enable precomputed ecmult table for signing [default=auto]]), [use_ecmult_static_precomputation=$enableval], [use_ecmult_static_precomputation=auto]) AC_ARG_ENABLE(module_ecdh, - AS_HELP_STRING([--enable-module-ecdh],[enable ECDH shared secret computation (experimental)]), + AS_HELP_STRING([--enable-module-ecdh],[enable ECDH shared secret computation]), [enable_module_ecdh=$enableval], [enable_module_ecdh=no]) AC_ARG_ENABLE(module_recovery, - AS_HELP_STRING([--enable-module-recovery],[enable ECDSA pubkey recovery module (default is no)]), + AS_HELP_STRING([--enable-module-recovery],[enable ECDSA pubkey recovery module [default=no]]), [enable_module_recovery=$enableval], [enable_module_recovery=no]) -AC_ARG_ENABLE(jni, - AS_HELP_STRING([--enable-jni],[enable libsecp256k1_jni (default is no)]), - [use_jni=$enableval], - [use_jni=no]) - -AC_ARG_WITH([field], [AS_HELP_STRING([--with-field=64bit|32bit|auto], -[Specify Field Implementation. Default is auto])],[req_field=$withval], [req_field=auto]) - -AC_ARG_WITH([bignum], [AS_HELP_STRING([--with-bignum=gmp|no|auto], -[Specify Bignum Implementation. Default is auto])],[req_bignum=$withval], [req_bignum=auto]) - -AC_ARG_WITH([scalar], [AS_HELP_STRING([--with-scalar=64bit|32bit|auto], -[Specify scalar implementation. Default is auto])],[req_scalar=$withval], [req_scalar=auto]) - -AC_ARG_WITH([asm], [AS_HELP_STRING([--with-asm=x86_64|arm|no|auto] -[Specify assembly optimizations to use. Default is auto (experimental: arm)])],[req_asm=$withval], [req_asm=auto]) - -AC_CHECK_TYPES([__int128]) - -AC_MSG_CHECKING([for __builtin_expect]) -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[void myfunc() {__builtin_expect(0,0);}]])], - [ AC_MSG_RESULT([yes]);AC_DEFINE(HAVE_BUILTIN_EXPECT,1,[Define this symbol if __builtin_expect is available]) ], - [ AC_MSG_RESULT([no]) - ]) - -if test x"$enable_coverage" = x"yes"; then - AC_DEFINE(COVERAGE, 1, [Define this symbol to compile out all VERIFY code]) - CFLAGS="$CFLAGS -O0 --coverage" - LDFLAGS="--coverage" +AC_ARG_ENABLE(module_extrakeys, + AS_HELP_STRING([--enable-module-extrakeys],[enable extrakeys module (experimental)]), + [enable_module_extrakeys=$enableval], + [enable_module_extrakeys=no]) + +AC_ARG_ENABLE(module_schnorrsig, + AS_HELP_STRING([--enable-module-schnorrsig],[enable schnorrsig module (experimental)]), + [enable_module_schnorrsig=$enableval], + [enable_module_schnorrsig=no]) + +AC_ARG_ENABLE(external_default_callbacks, + AS_HELP_STRING([--enable-external-default-callbacks],[enable external default callback functions [default=no]]), + [use_external_default_callbacks=$enableval], + [use_external_default_callbacks=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), and auto (the default). +AC_ARG_WITH([test-override-wide-multiply], [] ,[set_widemul=$withval], [set_widemul=auto]) + +AC_ARG_WITH([asm], [AS_HELP_STRING([--with-asm=x86_64|arm|no|auto], +[assembly optimizations to use (experimental: arm) [default=auto]])],[req_asm=$withval], [req_asm=auto]) + +AC_ARG_WITH([ecmult-window], [AS_HELP_STRING([--with-ecmult-window=SIZE|auto], +[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.] +["auto" is a reasonable setting for desktop machines (currently 15). [default=auto]] +)], +[req_ecmult_window=$withval], [req_ecmult_window=auto]) + +AC_ARG_WITH([ecmult-gen-precision], [AS_HELP_STRING([--with-ecmult-gen-precision=2|4|8|auto], +[Precision bits to tune the precomputed table size for signing.] +[The size of the table is 32kB for 2 bits, 64kB for 4 bits, 512kB for 8 bits of precision.] +[A larger table size usually results in possible faster signing.] +["auto" is a reasonable setting for desktop machines (currently 4). [default=auto]] +)], +[req_ecmult_gen_precision=$withval], [req_ecmult_gen_precision=auto]) + +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 - CFLAGS="$CFLAGS -O3" -fi - -if test x"$use_ecmult_static_precomputation" != x"no"; then - save_cross_compiling=$cross_compiling - cross_compiling=no - TEMP_CC="$CC" - CC="$CC_FOR_BUILD" - AC_MSG_CHECKING([native compiler: ${CC_FOR_BUILD}]) - AC_RUN_IFELSE( - [AC_LANG_PROGRAM([], [return 0])], - [working_native_cc=yes], - [working_native_cc=no],[dnl]) - CC="$TEMP_CC" - cross_compiling=$save_cross_compiling - - if test x"$working_native_cc" = x"no"; then - set_precomp=no - if test x"$use_ecmult_static_precomputation" = x"yes"; then - AC_MSG_ERROR([${CC_FOR_BUILD} does not produce working binaries. Please set CC_FOR_BUILD]) - else - AC_MSG_RESULT([${CC_FOR_BUILD} does not produce working binaries. Please set CC_FOR_BUILD]) + SECP_VALGRIND_CHECK + if test x"$has_valgrind" != x"yes"; then + if test x"$req_valgrind" = x"yes"; then + AC_MSG_ERROR([Valgrind support explicitly requested but valgrind/memcheck.h header not available]) fi + enable_valgrind=no else - AC_MSG_RESULT([ok]) - set_precomp=yes + enable_valgrind=yes fi +fi +AM_CONDITIONAL([VALGRIND_ENABLED],[test "$enable_valgrind" = "yes"]) + +if test x"$enable_coverage" = x"yes"; then + AC_DEFINE(COVERAGE, 1, [Define this symbol to compile out all VERIFY code]) + SECP_CFLAGS="-O0 --coverage $SECP_CFLAGS" + LDFLAGS="--coverage $LDFLAGS" else - set_precomp=no + # Most likely the CFLAGS already contain -O2 because that is autoconf's default. + # We still add it here because passing it twice is not an issue, and handling + # this case would just add unnecessary complexity (see #896). + SECP_CFLAGS="-O2 $SECP_CFLAGS" + SECP_CFLAGS_FOR_BUILD="-O2 $SECP_CFLAGS_FOR_BUILD" fi if test x"$req_asm" = x"auto"; then @@ -222,90 +252,7 @@ else esac fi -if test x"$req_field" = x"auto"; then - if test x"set_asm" = x"x86_64"; then - set_field=64bit - fi - if test x"$set_field" = x; then - SECP_INT128_CHECK - if test x"$has_int128" = x"yes"; then - set_field=64bit - fi - fi - if test x"$set_field" = x; then - set_field=32bit - fi -else - set_field=$req_field - case $set_field in - 64bit) - if test x"$set_asm" != x"x86_64"; then - SECP_INT128_CHECK - if test x"$has_int128" != x"yes"; then - AC_MSG_ERROR([64bit field explicitly requested but neither __int128 support or x86_64 assembly available]) - fi - fi - ;; - 32bit) - ;; - *) - AC_MSG_ERROR([invalid field implementation selection]) - ;; - esac -fi - -if test x"$req_scalar" = x"auto"; then - SECP_INT128_CHECK - if test x"$has_int128" = x"yes"; then - set_scalar=64bit - fi - if test x"$set_scalar" = x; then - set_scalar=32bit - fi -else - set_scalar=$req_scalar - case $set_scalar in - 64bit) - SECP_INT128_CHECK - if test x"$has_int128" != x"yes"; then - AC_MSG_ERROR([64bit scalar explicitly requested but __int128 support not available]) - fi - ;; - 32bit) - ;; - *) - AC_MSG_ERROR([invalid scalar implementation selected]) - ;; - esac -fi - -if test x"$req_bignum" = x"auto"; then - SECP_GMP_CHECK - if test x"$has_gmp" = x"yes"; then - set_bignum=gmp - fi - - if test x"$set_bignum" = x; then - set_bignum=no - fi -else - set_bignum=$req_bignum - case $set_bignum in - gmp) - SECP_GMP_CHECK - if test x"$has_gmp" != x"yes"; then - AC_MSG_ERROR([gmp bignum explicitly requested but libgmp not available]) - fi - ;; - no) - ;; - *) - AC_MSG_ERROR([invalid bignum implementation selection]) - ;; - esac -fi - -# select assembly optimization +# Select assembly optimization use_external_asm=no case $set_asm in @@ -322,56 +269,70 @@ no) ;; esac -# select field implementation -case $set_field in -64bit) - AC_DEFINE(USE_FIELD_5X52, 1, [Define this symbol to use the FIELD_5X52 implementation]) +if test x"$use_external_asm" = x"yes"; then + AC_DEFINE(USE_EXTERNAL_ASM, 1, [Define this symbol if an external (non-inline) assembly implementation is used]) +fi + + +# Select wide multiplication implementation +case $set_widemul in +int128) + AC_DEFINE(USE_FORCE_WIDEMUL_INT128, 1, [Define this symbol to force the use of the (unsigned) __int128 based wide multiplication implementation]) ;; -32bit) - AC_DEFINE(USE_FIELD_10X26, 1, [Define this symbol to use the FIELD_10X26 implementation]) +int64) + AC_DEFINE(USE_FORCE_WIDEMUL_INT64, 1, [Define this symbol to force the use of the (u)int64_t based wide multiplication implementation]) + ;; +auto) ;; *) - AC_MSG_ERROR([invalid field implementation]) + AC_MSG_ERROR([invalid wide multiplication implementation]) ;; esac -# select bignum implementation -case $set_bignum in -gmp) - AC_DEFINE(HAVE_LIBGMP, 1, [Define this symbol if libgmp is installed]) - AC_DEFINE(USE_NUM_GMP, 1, [Define this symbol to use the gmp implementation for num]) - AC_DEFINE(USE_FIELD_INV_NUM, 1, [Define this symbol to use the num-based field inverse implementation]) - AC_DEFINE(USE_SCALAR_INV_NUM, 1, [Define this symbol to use the num-based scalar inverse implementation]) - ;; -no) - AC_DEFINE(USE_NUM_NONE, 1, [Define this symbol to use no num implementation]) - AC_DEFINE(USE_FIELD_INV_BUILTIN, 1, [Define this symbol to use the native field inverse implementation]) - AC_DEFINE(USE_SCALAR_INV_BUILTIN, 1, [Define this symbol to use the native scalar inverse implementation]) +# Set ecmult window size +if test x"$req_ecmult_window" = x"auto"; then + set_ecmult_window=15 +else + set_ecmult_window=$req_ecmult_window +fi + +error_window_size=['window size for ecmult precomputation not an integer in range [2..24] or "auto"'] +case $set_ecmult_window in +''|*[[!0-9]]*) + # no valid integer + AC_MSG_ERROR($error_window_size) ;; *) - AC_MSG_ERROR([invalid bignum implementation]) + if test "$set_ecmult_window" -lt 2 -o "$set_ecmult_window" -gt 24 ; then + # not in range + AC_MSG_ERROR($error_window_size) + fi + AC_DEFINE_UNQUOTED(ECMULT_WINDOW_SIZE, $set_ecmult_window, [Set window size for ecmult precomputation]) ;; esac -#select scalar implementation -case $set_scalar in -64bit) - AC_DEFINE(USE_SCALAR_4X64, 1, [Define this symbol to use the 4x64 scalar implementation]) - ;; -32bit) - AC_DEFINE(USE_SCALAR_8X32, 1, [Define this symbol to use the 8x32 scalar implementation]) +# Set ecmult gen precision +if test x"$req_ecmult_gen_precision" = x"auto"; then + set_ecmult_gen_precision=4 +else + set_ecmult_gen_precision=$req_ecmult_gen_precision +fi + +case $set_ecmult_gen_precision in +2|4|8) + AC_DEFINE_UNQUOTED(ECMULT_GEN_PREC_BITS, $set_ecmult_gen_precision, [Set ecmult gen precision bits]) ;; *) - AC_MSG_ERROR([invalid scalar implementation]) + AC_MSG_ERROR(['ecmult gen precision not 2, 4, 8 or "auto"']) ;; esac if test x"$use_tests" = x"yes"; then SECP_OPENSSL_CHECK - if test x"$has_openssl_ec" = x"yes"; then - if test x"$enable_openssl_tests" != x"no"; then + if test x"$enable_openssl_tests" != x"no" && test x"$has_openssl_ec" = x"yes"; then + enable_openssl_tests=yes AC_DEFINE(ENABLE_OPENSSL_TESTS, 1, [Define this symbol if OpenSSL EC functions are available]) - SECP_TEST_INCLUDES="$SSL_CFLAGS $CRYPTO_CFLAGS" + SECP_TEST_INCLUDES="$SSL_CFLAGS $CRYPTO_CFLAGS $CRYPTO_CPPFLAGS" SECP_TEST_LIBS="$CRYPTO_LIBS" case $host in @@ -379,54 +340,101 @@ if test x"$use_tests" = x"yes"; then SECP_TEST_LIBS="$SECP_TEST_LIBS -lgdi32" ;; esac - fi else if test x"$enable_openssl_tests" = x"yes"; then AC_MSG_ERROR([OpenSSL tests requested but OpenSSL with EC support is not available]) fi + enable_openssl_tests=no fi else if test x"$enable_openssl_tests" = x"yes"; then AC_MSG_ERROR([OpenSSL tests requested but tests are not enabled]) fi + enable_openssl_tests=no fi -if test x"$use_jni" != x"no"; then - AX_JNI_INCLUDE_DIR - have_jni_dependencies=yes - if test x"$enable_module_ecdh" = x"no"; then - have_jni_dependencies=no - fi - if test "x$JNI_INCLUDE_DIRS" = "x"; then - have_jni_dependencies=no - fi - if test "x$have_jni_dependencies" = "xno"; then - if test x"$use_jni" = x"yes"; then - AC_MSG_ERROR([jni support explicitly requested but headers/dependencies were not found. Enable ECDH and try again.]) +if test x"$enable_valgrind" = x"yes"; then + SECP_INCLUDES="$SECP_INCLUDES $VALGRIND_CPPFLAGS" +fi + +# Add -Werror and similar flags passed from the outside (for testing, e.g., in CI) +SECP_CFLAGS="$SECP_CFLAGS $WERROR_CFLAGS" + +# Handle static precomputation (after everything which modifies CFLAGS and friends) +if test x"$use_ecmult_static_precomputation" != x"no"; then + if test x"$cross_compiling" = x"no"; then + set_precomp=yes + if test x"${CC_FOR_BUILD+x}${CFLAGS_FOR_BUILD+x}${CPPFLAGS_FOR_BUILD+x}${LDFLAGS_FOR_BUILD+x}" != x; then + AC_MSG_WARN([CC_FOR_BUILD, CFLAGS_FOR_BUILD, CPPFLAGS_FOR_BUILD, and/or LDFLAGS_FOR_BUILD is set but ignored because we are not cross-compiling.]) fi - AC_MSG_WARN([jni headers/dependencies not found. jni support disabled]) - use_jni=no + # If we're not cross-compiling, simply use the same compiler for building the static precompation code. + CC_FOR_BUILD="$CC" + CPPFLAGS_FOR_BUILD="$CPPFLAGS" + SECP_CFLAGS_FOR_BUILD="$SECP_CFLAGS" + CFLAGS_FOR_BUILD="$CFLAGS" + LDFLAGS_FOR_BUILD="$LDFLAGS" else - use_jni=yes - for JNI_INCLUDE_DIR in $JNI_INCLUDE_DIRS; do - JNI_INCLUDES="$JNI_INCLUDES -I$JNI_INCLUDE_DIR" - done + AX_PROG_CC_FOR_BUILD + + # Temporarily switch to an environment for the native compiler + save_cross_compiling=$cross_compiling + cross_compiling=no + SAVE_CC="$CC" + CC="$CC_FOR_BUILD" + SAVE_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS_FOR_BUILD" + SAVE_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS_FOR_BUILD" + SAVE_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS_FOR_BUILD" + + SECP_TRY_APPEND_DEFAULT_CFLAGS(SECP_CFLAGS_FOR_BUILD) + + AC_MSG_CHECKING([for working native compiler: ${CC_FOR_BUILD}]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([], [])], + [working_native_cc=yes], + [working_native_cc=no],[:]) + + # Restore the environment + cross_compiling=$save_cross_compiling + CC="$SAVE_CC" + CPPFLAGS="$SAVE_CPPFLAGS" + CFLAGS="$SAVE_CFLAGS" + LDFLAGS="$SAVE_LDFLAGS" + + if test x"$working_native_cc" = x"no"; then + AC_MSG_RESULT([no]) + set_precomp=no + m4_define([please_set_for_build], [Please set CC_FOR_BUILD, CPPFLAGS_FOR_BUILD, CFLAGS_FOR_BUILD, and/or LDFLAGS_FOR_BUILD.]) + if test x"$use_ecmult_static_precomputation" = x"yes"; then + AC_MSG_ERROR([native compiler ${CC_FOR_BUILD} does not produce working binaries. please_set_for_build]) + else + AC_MSG_WARN([Disabling statically generated ecmult table because the native compiler ${CC_FOR_BUILD} does not produce working binaries. please_set_for_build]) + fi + else + AC_MSG_RESULT([yes]) + set_precomp=yes + fi fi -fi -if test x"$set_bignum" = x"gmp"; then - SECP_LIBS="$SECP_LIBS $GMP_LIBS" - SECP_INCLUDES="$SECP_INCLUDES $GMP_CPPFLAGS" -fi - -if test x"$use_endomorphism" = x"yes"; then - AC_DEFINE(USE_ENDOMORPHISM, 1, [Define this symbol to use endomorphism optimization]) + AC_SUBST(CC_FOR_BUILD) + AC_SUBST(CPPFLAGS_FOR_BUILD) + AC_SUBST(SECP_CFLAGS_FOR_BUILD) + AC_SUBST(CFLAGS_FOR_BUILD) + AC_SUBST(LDFLAGS_FOR_BUILD) +else + set_precomp=no fi if test x"$set_precomp" = x"yes"; then AC_DEFINE(USE_ECMULT_STATIC_PRECOMPUTATION, 1, [Define this symbol to use a statically generated ecmult table]) fi +### +### Handle module options +### + if test x"$enable_module_ecdh" = x"yes"; then AC_DEFINE(ENABLE_MODULE_ECDH, 1, [Define this symbol to enable the ECDH module]) fi @@ -435,46 +443,55 @@ if test x"$enable_module_recovery" = x"yes"; then AC_DEFINE(ENABLE_MODULE_RECOVERY, 1, [Define this symbol to enable the ECDSA pubkey recovery module]) fi -AC_C_BIGENDIAN() +if test x"$enable_module_schnorrsig" = x"yes"; then + AC_DEFINE(ENABLE_MODULE_SCHNORRSIG, 1, [Define this symbol to enable the schnorrsig module]) + enable_module_extrakeys=yes +fi -if test x"$use_external_asm" = x"yes"; then - AC_DEFINE(USE_EXTERNAL_ASM, 1, [Define this symbol if an external (non-inline) assembly implementation is used]) +# Test if extrakeys is set after the schnorrsig module to allow the schnorrsig +# module to set enable_module_extrakeys=yes +if test x"$enable_module_extrakeys" = x"yes"; then + AC_DEFINE(ENABLE_MODULE_EXTRAKEYS, 1, [Define this symbol to enable the extrakeys module]) +fi + +if test x"$use_external_default_callbacks" = x"yes"; then + AC_DEFINE(USE_EXTERNAL_DEFAULT_CALLBACKS, 1, [Define this symbol if an external implementation of the default callbacks is used]) fi -AC_MSG_NOTICE([Using static precomputation: $set_precomp]) -AC_MSG_NOTICE([Using assembly optimizations: $set_asm]) -AC_MSG_NOTICE([Using field implementation: $set_field]) -AC_MSG_NOTICE([Using bignum implementation: $set_bignum]) -AC_MSG_NOTICE([Using scalar implementation: $set_scalar]) -AC_MSG_NOTICE([Using endomorphism optimizations: $use_endomorphism]) -AC_MSG_NOTICE([Building benchmarks: $use_benchmark]) -AC_MSG_NOTICE([Building for coverage analysis: $enable_coverage]) -AC_MSG_NOTICE([Building ECDH module: $enable_module_ecdh]) -AC_MSG_NOTICE([Building ECDSA pubkey recovery module: $enable_module_recovery]) -AC_MSG_NOTICE([Using jni: $use_jni]) +### +### Check for --enable-experimental if necessary +### if test x"$enable_experimental" = x"yes"; then AC_MSG_NOTICE([******]) AC_MSG_NOTICE([WARNING: experimental build]) AC_MSG_NOTICE([Experimental features do not have stable APIs or properties, and may not be safe for production use.]) - AC_MSG_NOTICE([Building ECDH module: $enable_module_ecdh]) + AC_MSG_NOTICE([Building extrakeys module: $enable_module_extrakeys]) + AC_MSG_NOTICE([Building schnorrsig module: $enable_module_schnorrsig]) AC_MSG_NOTICE([******]) else - if test x"$enable_module_ecdh" = x"yes"; then - AC_MSG_ERROR([ECDH module is experimental. Use --enable-experimental to allow.]) + if test x"$enable_module_extrakeys" = x"yes"; then + AC_MSG_ERROR([extrakeys module is experimental. Use --enable-experimental to allow.]) + fi + if test x"$enable_module_schnorrsig" = x"yes"; then + AC_MSG_ERROR([schnorrsig module is experimental. Use --enable-experimental to allow.]) fi if test x"$set_asm" = x"arm"; then AC_MSG_ERROR([ARM assembly optimization is experimental. Use --enable-experimental to allow.]) fi fi +### +### Generate output +### + AC_CONFIG_HEADERS([src/libsecp256k1-config.h]) AC_CONFIG_FILES([Makefile libsecp256k1.pc]) -AC_SUBST(JNI_INCLUDES) AC_SUBST(SECP_INCLUDES) AC_SUBST(SECP_LIBS) AC_SUBST(SECP_TEST_LIBS) AC_SUBST(SECP_TEST_INCLUDES) +AC_SUBST(SECP_CFLAGS) AM_CONDITIONAL([ENABLE_COVERAGE], [test x"$enable_coverage" = x"yes"]) AM_CONDITIONAL([USE_TESTS], [test x"$use_tests" != x"no"]) AM_CONDITIONAL([USE_EXHAUSTIVE_TESTS], [test x"$use_exhaustive_tests" != x"no"]) @@ -482,13 +499,50 @@ AM_CONDITIONAL([USE_BENCHMARK], [test x"$use_benchmark" = x"yes"]) AM_CONDITIONAL([USE_ECMULT_STATIC_PRECOMPUTATION], [test x"$set_precomp" = 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([USE_JNI], [test x"$use_jni" == x"yes"]) +AM_CONDITIONAL([ENABLE_MODULE_EXTRAKEYS], [test x"$enable_module_extrakeys" = x"yes"]) +AM_CONDITIONAL([ENABLE_MODULE_SCHNORRSIG], [test x"$enable_module_schnorrsig" = x"yes"]) AM_CONDITIONAL([USE_EXTERNAL_ASM], [test x"$use_external_asm" = x"yes"]) AM_CONDITIONAL([USE_ASM_ARM], [test x"$set_asm" = x"arm"]) -dnl make sure nothing new is exported so that we don't break the cache +# Make sure nothing new is exported so that we don't break the cache. PKGCONFIG_PATH_TEMP="$PKG_CONFIG_PATH" unset PKG_CONFIG_PATH PKG_CONFIG_PATH="$PKGCONFIG_PATH_TEMP" AC_OUTPUT + +echo +echo "Build Options:" +echo " with ecmult precomp = $set_precomp" +echo " with external callbacks = $use_external_default_callbacks" +echo " with benchmarks = $use_benchmark" +echo " with tests = $use_tests" +echo " with openssl tests = $enable_openssl_tests" +echo " with coverage = $enable_coverage" +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 +echo " asm = $set_asm" +echo " ecmult window size = $set_ecmult_window" +echo " ecmult gen prec. bits = $set_ecmult_gen_precision" +# Hide test-only options unless they're used. +if test x"$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 = $LDFLAGS" +echo +if test x"$set_precomp" = x"yes"; then +echo " CC_FOR_BUILD = $CC_FOR_BUILD" +echo " CPPFLAGS_FOR_BUILD = $CPPFLAGS_FOR_BUILD" +echo " SECP_CFLAGS_FOR_BUILD = $SECP_CFLAGS_FOR_BUILD" +echo " CFLAGS_FOR_BUILD = $CFLAGS_FOR_BUILD" +echo " LDFLAGS_FOR_BUILD = $LDFLAGS_FOR_BUILD" +fi