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build: add option for reducing exports (v2)

This was committed previously as 4975ae172 and reverted, because the flags were
applied even if the checks didn't pass. This is the same commit, fixed up to
actually disable the functionality when necessary.

Enabled automatically if boost >= 1.49.
See: https://svn.boost.org/trac/boost/ticket/2309

Also, check for a default visibility attribute, so that we can mark future
api functions correctly.
pull/1/head
Cory Fields 8 years ago
parent
commit
e432a5f08d
  1. 78
      configure.ac
  2. 3
      src/Makefile.am
  3. 2
      src/Makefile.qt.include
  4. 2
      src/Makefile.qttest.include
  5. 1
      src/Makefile.test.include

78
configure.ac

@ -90,6 +90,12 @@ AC_ARG_ENABLE([hardening], @@ -90,6 +90,12 @@ AC_ARG_ENABLE([hardening],
[use_hardening=$enableval],
[use_hardening=yes])
AC_ARG_ENABLE([reduce-exports],
[AS_HELP_STRING([--enable-reduce-exports],
[attempt to reduce exported symbols in the resulting executables (default is yes)])],
[use_reduce_exports=$enableval],
[use_reduce_exports=auto])
AC_ARG_ENABLE([ccache],
[AS_HELP_STRING([--enable-ccache],
[use ccache for building (default is yes if ccache is found)])],
@ -396,6 +402,36 @@ AC_TRY_COMPILE([#include <sys/socket.h>], @@ -396,6 +402,36 @@ AC_TRY_COMPILE([#include <sys/socket.h>],
AC_SEARCH_LIBS([clock_gettime],[rt])
AC_MSG_CHECKING([for visibility attribute])
AC_LINK_IFELSE([AC_LANG_SOURCE([
int foo_def( void ) __attribute__((visibility("default")));
int main(){}
])],
[
AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE,1,[Define if the visibility attribute is supported.])
AC_MSG_RESULT(yes)
],
[
AC_MSG_RESULT(no)
if test x$use_reduce_exports = xyes; then
AC_MSG_ERROR([Cannot find a working visibility attribute. Use --disable-reduced-exports.])
fi
AC_MSG_WARN([Cannot find a working visibility attribute. Disabling reduced exports.])
use_reduce_exports=no
]
)
if test x$use_reduce_exports != xno; then
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],[RE_CXXFLAGS="-fvisibility=hidden"],
[
if test x$use_reduce_exports = xyes; then
AC_MSG_ERROR([Cannot set default symbol visibility. Use --disable-reduced-exports.])
fi
AC_MSG_WARN([Cannot set default symbol visibility. Disabling reduced exports.])
use_reduce_exports=no
])
fi
LEVELDB_CPPFLAGS=
LIBLEVELDB=
LIBMEMENV=
@ -426,6 +462,40 @@ AX_BOOST_PROGRAM_OPTIONS @@ -426,6 +462,40 @@ AX_BOOST_PROGRAM_OPTIONS
AX_BOOST_THREAD
AX_BOOST_CHRONO
if test x$use_reduce_exports != xno; then
AC_MSG_CHECKING([for working boost reduced exports])
TEMP_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$BOOST_CPPFLAGS $CPPFLAGS"
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
@%:@include <boost/version.hpp>
]], [[
#if BOOST_VERSION >= 104900
// Everything is okay
#else
# error Boost version is too old
#endif
]])],[
AC_MSG_RESULT(yes)
],[:
if test x$use_reduce_exports = xauto; then
use_reduce_exports=no
else
if test x$use_reduce_exports = xyes; then
AC_MSG_ERROR([boost versions < 1.49 are known to be broken with reduced exports. Use --disable-reduced-exports.])
fi
fi
AC_MSG_RESULT(no)
AC_MSG_WARN([boost versions < 1.49 are known to have symbol visibility issues. Disabling reduced exports.])
])
CPPFLAGS="$TEMP_CPPFLAGS"
fi
if test x$use_reduce_exports != xno; then
CXXFLAGS="$CXXFLAGS $RE_CXXFLAGS"
AX_CHECK_LINK_FLAG([[-Wl,--exclude-libs,ALL]], [RELDFLAGS="-Wl,--exclude-libs,ALL"])
fi
if test x$use_tests = xyes; then
if test x$HEXDUMP = x; then
@ -672,6 +742,13 @@ else @@ -672,6 +742,13 @@ else
AC_MSG_RESULT([no])
fi
AC_MSG_CHECKING([whether to reduce exports])
if test x$use_reduce_exports != xno; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests = xnononono; then
AC_MSG_ERROR([No targets! Please specify at least one of: --with-utils --with-daemon --with-gui or --enable-tests])
fi
@ -704,6 +781,7 @@ AC_SUBST(CLIENT_VERSION_IS_RELEASE, _CLIENT_VERSION_IS_RELEASE) @@ -704,6 +781,7 @@ AC_SUBST(CLIENT_VERSION_IS_RELEASE, _CLIENT_VERSION_IS_RELEASE)
AC_SUBST(COPYRIGHT_YEAR, _COPYRIGHT_YEAR)
AC_SUBST(RELDFLAGS)
AC_SUBST(LIBTOOL_LDFLAGS)
AC_SUBST(USE_UPNP)
AC_SUBST(USE_QRCODE)

3
src/Makefile.am

@ -261,6 +261,7 @@ endif @@ -261,6 +261,7 @@ endif
bitcoind_LDADD += $(BOOST_LIBS) $(BDB_LIBS) $(SSL_LIBS) $(CRYPTO_LIBS)
bitcoind_CPPFLAGS = $(BITCOIN_INCLUDES)
bitcoind_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS)
# bitcoin-cli binary #
bitcoin_cli_LDADD = \
@ -298,10 +299,12 @@ endif @@ -298,10 +299,12 @@ endif
bitcoin_tx_SOURCES = bitcoin-tx.cpp
bitcoin_tx_CPPFLAGS = $(BITCOIN_INCLUDES)
#
bitcoin_tx_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS)
if TARGET_WINDOWS
bitcoin_cli_SOURCES += bitcoin-cli-res.rc
endif
bitcoin_cli_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS)
CLEANFILES = leveldb/libleveldb.a leveldb/libmemenv.a *.gcda *.gcno

2
src/Makefile.qt.include

@ -362,7 +362,7 @@ qt_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL) @@ -362,7 +362,7 @@ qt_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL)
if USE_LIBSECP256K1
qt_bitcoin_qt_LDADD += secp256k1/libsecp256k1.la
endif
qt_bitcoin_qt_LDFLAGS = $(AM_LDFLAGS) $(QT_LDFLAGS)
qt_bitcoin_qt_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(QT_LDFLAGS)
#locale/foo.ts -> locale/foo.qm
QT_QM=$(QT_TS:.ts=.qm)

2
src/Makefile.qttest.include

@ -36,7 +36,7 @@ qt_test_test_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBIT @@ -36,7 +36,7 @@ qt_test_test_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBIT
if USE_LIBSECP256K1
qt_test_test_bitcoin_qt_LDADD += secp256k1/libsecp256k1.la
endif
qt_test_test_bitcoin_qt_LDFLAGS = $(AM_LDFLAGS) $(QT_LDFLAGS)
qt_test_test_bitcoin_qt_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(QT_LDFLAGS)
CLEAN_BITCOIN_QT_TEST = $(TEST_QT_MOC_CPP) qt/test/*.gcda qt/test/*.gcno

1
src/Makefile.test.include

@ -75,6 +75,7 @@ if USE_LIBSECP256K1 @@ -75,6 +75,7 @@ if USE_LIBSECP256K1
endif
test_test_bitcoin_LDADD += $(BDB_LIBS) $(SSL_LIBS) $(CRYPTO_LIBS)
test_test_bitcoin_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS)
nodist_test_test_bitcoin_SOURCES = $(GENERATED_TEST_FILES)

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