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Merge #399: build: verify that the native compiler works for static precomp 

aa0b1fd build: verify that the native compiler works for static precomp (Cory Fields)
This commit is contained in:
Pieter Wuille 2016-06-29 11:10:13 +02:00
parent b3be8521e6 aa0b1fd149
commit 24ad20f75b
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GPG Key ID: DBA1A67379A1A931
1 changed files with 30 additions and 1 deletions
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31
configure.ac
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@ -107,7 +107,7 @@ AC_ARG_ENABLE(endomorphism,
AC_ARG_ENABLE(ecmult_static_precomputation,
AS_HELP_STRING([--enable-ecmult-static-precomputation],[enable precomputed ecmult table for signing (default is yes)]),
[use_ecmult_static_precomputation=$enableval],
[use_ecmult_static_precomputation=yes])
[use_ecmult_static_precomputation=auto])
AC_ARG_ENABLE(module_ecdh,
AS_HELP_STRING([--enable-module-ecdh],[enable ECDH shared secret computation (experimental)]),
@ -149,6 +149,34 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[void myfunc() {__builtin_expect(0,0);}]])],
[ AC_MSG_RESULT([no])
])
if test x"$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([${CC_FOR_BUILD} does not produce working binaries. Please set CC_FOR_BUILD])
fi
else
AC_MSG_RESULT([ok])
set_precomp=yes
fi
else
set_precomp=no
fi
if test x"$req_asm" = x"auto"; then
SECP_64BIT_ASM_CHECK
if test x"$has_64bit_asm" = x"yes"; then
@ -393,6 +421,7 @@ if test x"$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
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])