diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 7db6ebac0e..601ccf0a79 100644 --- a/configure.ac +++ b/configure.ac @@ -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>], 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$use_reduce_exports = xyes; then + AC_MSG_ERROR([Cannot set default symbol visibility. Use --disable-reduced-exports.]) + fi + AC_MSG_WARN([Cannot set default symbol visibility. Disabling reduced exports.]) + use_reduce_exports=no + ]) +fi + LEVELDB_CPPFLAGS= LIBLEVELDB= LIBMEMENV= @@ -426,6 +462,40 @@ AX_BOOST_PROGRAM_OPTIONS AX_BOOST_THREAD AX_BOOST_CHRONO + +if test x$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$HEXDUMP = x; then @@ -672,6 +742,13 @@ else AC_MSG_RESULT([no]) fi +AC_MSG_CHECKING([whether to reduce exports]) +if test x$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) AC_SUBST(COPYRIGHT_YEAR, _COPYRIGHT_YEAR) +AC_SUBST(RELDFLAGS) AC_SUBST(LIBTOOL_LDFLAGS) AC_SUBST(USE_UPNP) AC_SUBST(USE_QRCODE) |