diff options
Diffstat (limited to 'src/secp256k1/configure.ac')
| -rw-r--r-- | src/secp256k1/configure.ac | 279 |
1 files changed, 147 insertions, 132 deletions
diff --git a/src/secp256k1/configure.ac b/src/secp256k1/configure.ac index eb3b449bec..1ed991afa7 100644 --- a/src/secp256k1/configure.ac +++ b/src/secp256k1/configure.ac @@ -14,7 +14,7 @@ AM_INIT_AUTOMAKE([foreign subdir-objects]) : ${CFLAGS="-g"} LT_INIT -dnl make the compilation flags quiet unless V=1 is used +# Make the compilation flags quiet unless V=1 is used. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) PKG_PROG_PKG_CONFIG @@ -22,9 +22,16 @@ PKG_PROG_PKG_CONFIG AC_PATH_TOOL(AR, ar) AC_PATH_TOOL(RANLIB, ranlib) AC_PATH_TOOL(STRIP, strip) -AX_PROG_CC_FOR_BUILD +# Save definition of AC_PROG_CC because AM_PROG_CC_C_O in automake<=1.13 will +# redefine AC_PROG_CC to exit with an error, which avoids the user calling it +# accidently and screwing up the effect of AM_PROG_CC_C_O. However, we'll need +# AC_PROG_CC later on in AX_PROG_CC_FOR_BUILD, where its usage is fine, and +# we'll carefully make sure not to call AC_PROG_CC anywhere else. +m4_copy([AC_PROG_CC], [saved_AC_PROG_CC]) AM_PROG_CC_C_O +# Restore AC_PROG_CC +m4_rename_force([saved_AC_PROG_CC], [AC_PROG_CC]) AC_PROG_CC_C89 if test x"$ac_cv_prog_cc_c89" = x"no"; then @@ -37,25 +44,23 @@ case $host_os in if test x$cross_compiling != xyes; then AC_PATH_PROG([BREW],brew,) if test x$BREW != x; then - dnl These Homebrew packages may be keg-only, meaning that they won't be found - dnl in expected paths because they may conflict with system files. Ask - dnl Homebrew where each one is located, then adjust paths accordingly. - + # These Homebrew packages may be keg-only, meaning that they won't be found + # in expected paths because they may conflict with system files. Ask + # Homebrew where each one is located, then adjust paths accordingly. openssl_prefix=`$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$valgrind_prefix/include" fi else AC_PATH_PROG([PORT],port,) - dnl if homebrew isn't installed and macports is, add the macports default paths - dnl as a last resort. + # If homebrew isn't installed and macports is, add the macports default paths + # as a last resort. if test x$PORT != x; then CPPFLAGS="$CPPFLAGS -isystem /opt/local/include" LDFLAGS="$LDFLAGS -L/opt/local/lib" @@ -78,6 +83,15 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], ]) saved_CFLAGS="$CFLAGS" +CFLAGS="-Wconditional-uninitialized $CFLAGS" +AC_MSG_CHECKING([if ${CC} supports -Wconditional-uninitialized]) +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + CFLAGS="$saved_CFLAGS" + ]) + +saved_CFLAGS="$CFLAGS" CFLAGS="-fvisibility=hidden $CFLAGS" AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden]) AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], @@ -86,6 +100,10 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], CFLAGS="$saved_CFLAGS" ]) +### +### Define config arguments +### + AC_ARG_ENABLE(benchmark, AS_HELP_STRING([--enable-benchmark],[compile benchmark [default=yes]]), [use_benchmark=$enableval], @@ -146,13 +164,10 @@ AC_ARG_ENABLE(external_default_callbacks, [use_external_default_callbacks=$enableval], [use_external_default_callbacks=no]) -dnl Test-only override of the (autodetected by the C code) "widemul" setting. -dnl Legal values are int64 (for [u]int64_t), int128 (for [unsigned] __int128), and auto (the default). +# 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=$withval], [set_widemul=auto]) -AC_ARG_WITH([bignum], [AS_HELP_STRING([--with-bignum=gmp|no|auto], -[bignum implementation to use [default=auto]])],[req_bignum=$withval], [req_bignum=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=$withval], [req_asm=auto]) @@ -177,15 +192,22 @@ AC_ARG_WITH([valgrind], [AS_HELP_STRING([--with-valgrind=yes|no|auto], )], [req_valgrind=$withval], [req_valgrind=auto]) +### +### Handle config options (except for modules) +### + if test x"$req_valgrind" = x"no"; then enable_valgrind=no else - AC_CHECK_HEADER([valgrind/memcheck.h], [enable_valgrind=yes], [ + SECP_VALGRIND_CHECK + if test x"$has_valgrind" != x"yes"; then if test x"$req_valgrind" = x"yes"; then AC_MSG_ERROR([Valgrind support explicitly requested but valgrind/memcheck.h header not available]) fi enable_valgrind=no - ], []) + else + enable_valgrind=yes + fi fi AM_CONDITIONAL([VALGRIND_ENABLED],[test "$enable_valgrind" = "yes"]) @@ -197,61 +219,6 @@ else CFLAGS="-O2 $CFLAGS" fi -if test x"$use_ecmult_static_precomputation" != x"no"; then - # Temporarily switch to an environment for the native compiler - save_cross_compiling=$cross_compiling - cross_compiling=no - SAVE_CC="$CC" - CC="$CC_FOR_BUILD" - SAVE_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS_FOR_BUILD" - SAVE_CPPFLAGS="$CPPFLAGS" - CPPFLAGS="$CPPFLAGS_FOR_BUILD" - SAVE_LDFLAGS="$LDFLAGS" - LDFLAGS="$LDFLAGS_FOR_BUILD" - - warn_CFLAGS_FOR_BUILD="-Wall -Wextra -Wno-unused-function" - saved_CFLAGS="$CFLAGS" - CFLAGS="$warn_CFLAGS_FOR_BUILD $CFLAGS" - AC_MSG_CHECKING([if native ${CC_FOR_BUILD} supports ${warn_CFLAGS_FOR_BUILD}]) - AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], - [ AC_MSG_RESULT([yes]) ], - [ AC_MSG_RESULT([no]) - CFLAGS="$saved_CFLAGS" - ]) - - AC_MSG_CHECKING([for working native compiler: ${CC_FOR_BUILD}]) - AC_RUN_IFELSE( - [AC_LANG_PROGRAM([], [])], - [working_native_cc=yes], - [working_native_cc=no],[:]) - - CFLAGS_FOR_BUILD="$CFLAGS" - - # Restore the environment - cross_compiling=$save_cross_compiling - CC="$SAVE_CC" - CFLAGS="$SAVE_CFLAGS" - CPPFLAGS="$SAVE_CPPFLAGS" - 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, CFLAGS_FOR_BUILD, CPPFLAGS_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 ${CC_FOR_BUILD} does not produce working binaries. please_set_for_build]) - fi - else - AC_MSG_RESULT([yes]) - set_precomp=yes - fi -else - set_precomp=no -fi - if test x"$req_asm" = x"auto"; then SECP_64BIT_ASM_CHECK if test x"$has_64bit_asm" = x"yes"; then @@ -279,33 +246,7 @@ else esac fi -if test x"$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 $set_asm in @@ -322,7 +263,12 @@ no) ;; esac -# select wide multiplication implementation +if test x"$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]) @@ -337,25 +283,7 @@ auto) ;; esac -# select bignum implementation -case $set_bignum in -gmp) - AC_DEFINE(HAVE_LIBGMP, 1, [Define this symbol if libgmp is installed]) - AC_DEFINE(USE_NUM_GMP, 1, [Define this symbol to use the gmp implementation for num]) - AC_DEFINE(USE_FIELD_INV_NUM, 1, [Define this symbol to use the num-based field inverse implementation]) - AC_DEFINE(USE_SCALAR_INV_NUM, 1, [Define this symbol to use the num-based scalar inverse implementation]) - ;; -no) - AC_DEFINE(USE_NUM_NONE, 1, [Define this symbol to use no num implementation]) - AC_DEFINE(USE_FIELD_INV_BUILTIN, 1, [Define this symbol to use the native field inverse implementation]) - AC_DEFINE(USE_SCALAR_INV_BUILTIN, 1, [Define this symbol to use the native scalar inverse implementation]) - ;; -*) - AC_MSG_ERROR([invalid bignum implementation]) - ;; -esac - -#set ecmult window size +# Set ecmult window size if test x"$req_ecmult_window" = x"auto"; then set_ecmult_window=15 else @@ -377,7 +305,7 @@ case $set_ecmult_window in ;; esac -#set ecmult gen precision +# Set ecmult gen precision if test x"$req_ecmult_gen_precision" = x"auto"; then set_ecmult_gen_precision=4 else @@ -419,15 +347,93 @@ else enable_openssl_tests=no fi -if test x"$set_bignum" = x"gmp"; then - SECP_LIBS="$SECP_LIBS $GMP_LIBS" - SECP_INCLUDES="$SECP_INCLUDES $GMP_CPPFLAGS" +if test x"$enable_valgrind" = x"yes"; then + SECP_INCLUDES="$SECP_INCLUDES $VALGRIND_CPPFLAGS" +fi + +# Handle static precomputation (after everything which modifies CFLAGS and friends) +if test x"$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}${LDFLAGS_FOR_BUILD+x}" != x; then + AC_MSG_WARN([CC_FOR_BUILD, CFLAGS_FOR_BUILD, CPPFLAGS_FOR_BUILD, and/or LDFLAGS_FOR_BUILD is set but ignored because we are not cross-compiling.]) + fi + # If we're not cross-compiling, simply use the same compiler for building the static precompation code. + CC_FOR_BUILD="$CC" + CFLAGS_FOR_BUILD="$CFLAGS" + CPPFLAGS_FOR_BUILD="$CPPFLAGS" + LDFLAGS_FOR_BUILD="$LDFLAGS" + else + AX_PROG_CC_FOR_BUILD + + # Temporarily switch to an environment for the native compiler + save_cross_compiling=$cross_compiling + cross_compiling=no + SAVE_CC="$CC" + CC="$CC_FOR_BUILD" + SAVE_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS_FOR_BUILD" + SAVE_CPPFLAGS="$CPPFLAGS" + CPPFLAGS="$CPPFLAGS_FOR_BUILD" + SAVE_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS_FOR_BUILD" + + warn_CFLAGS_FOR_BUILD="-Wall -Wextra -Wno-unused-function" + saved_CFLAGS="$CFLAGS" + CFLAGS="$warn_CFLAGS_FOR_BUILD $CFLAGS" + AC_MSG_CHECKING([if native ${CC_FOR_BUILD} supports ${warn_CFLAGS_FOR_BUILD}]) + AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])], + [ AC_MSG_RESULT([yes]) ], + [ AC_MSG_RESULT([no]) + CFLAGS="$saved_CFLAGS" + ]) + + AC_MSG_CHECKING([for working native compiler: ${CC_FOR_BUILD}]) + AC_RUN_IFELSE( + [AC_LANG_PROGRAM([], [])], + [working_native_cc=yes], + [working_native_cc=no],[:]) + + CFLAGS_FOR_BUILD="$CFLAGS" + + # Restore the environment + cross_compiling=$save_cross_compiling + CC="$SAVE_CC" + CFLAGS="$SAVE_CFLAGS" + CPPFLAGS="$SAVE_CPPFLAGS" + 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, CFLAGS_FOR_BUILD, CPPFLAGS_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 ${CC_FOR_BUILD} does not produce working binaries. please_set_for_build]) + fi + else + AC_MSG_RESULT([yes]) + set_precomp=yes + fi + fi + + AC_SUBST(CC_FOR_BUILD) + AC_SUBST(CFLAGS_FOR_BUILD) + AC_SUBST(CPPFLAGS_FOR_BUILD) + AC_SUBST(LDFLAGS_FOR_BUILD) +else + set_precomp=no fi if test x"$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"$enable_module_ecdh" = x"yes"; then AC_DEFINE(ENABLE_MODULE_ECDH, 1, [Define this symbol to enable the ECDH module]) fi @@ -447,14 +453,14 @@ if test x"$enable_module_extrakeys" = x"yes"; then AC_DEFINE(ENABLE_MODULE_EXTRAKEYS, 1, [Define this symbol to enable the extrakeys module]) fi -if test x"$use_external_asm" = x"yes"; then - AC_DEFINE(USE_EXTERNAL_ASM, 1, [Define this symbol if an external (non-inline) assembly implementation is used]) -fi - if test x"$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 +### +### Check for --enable-experimental if necessary +### + if test x"$enable_experimental" = x"yes"; then AC_MSG_NOTICE([******]) AC_MSG_NOTICE([WARNING: experimental build]) @@ -474,6 +480,10 @@ else fi fi +### +### Generate output +### + AC_CONFIG_HEADERS([src/libsecp256k1-config.h]) AC_CONFIG_FILES([Makefile libsecp256k1.pc]) AC_SUBST(SECP_INCLUDES) @@ -492,7 +502,7 @@ AM_CONDITIONAL([ENABLE_MODULE_SCHNORRSIG], [test x"$enable_module_schnorrsig" = 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" @@ -513,10 +523,9 @@ echo " module extrakeys = $enable_module_extrakeys" echo " module schnorrsig = $enable_module_schnorrsig" echo echo " asm = $set_asm" -echo " bignum = $set_bignum" echo " ecmult window size = $set_ecmult_window" echo " ecmult gen prec. bits = $set_ecmult_gen_precision" -dnl Hide test-only options unless they're used. +# Hide test-only options unless they're used. if test x"$set_widemul" != xauto; then echo " wide multiplication = $set_widemul" fi @@ -527,3 +536,9 @@ echo " CFLAGS = $CFLAGS" echo " CPPFLAGS = $CPPFLAGS" echo " LDFLAGS = $LDFLAGS" echo +if test x"$set_precomp" = x"yes"; then +echo " CC_FOR_BUILD = $CC_FOR_BUILD" +echo " CFLAGS_FOR_BUILD = $CFLAGS_FOR_BUILD" +echo " CPPFLAGS_FOR_BUILD = $CPPFLAGS_FOR_BUILD" +echo " LDFLAGS_FOR_BUILD = $LDFLAGS_FOR_BUILD" +fi |