build: Split hardening/fPIE options out

This allows for fPIE to be used selectively.

Github-Pull: #6978
Rebased-From: 17c4d9d164

build-aux/m4/bitcoin_qt.m4

@@ -105,7 +105,9 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
   dnl results to QT_LIBS.
   BITCOIN_QT_CHECK([
   TEMP_CPPFLAGS=$CPPFLAGS
+  TEMP_CXXFLAGS=$CXXFLAGS
   CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
+  CXXFLAGS="$PIC_FLAGS $CXXFLAGS"
   if test x$bitcoin_qt_got_major_vers = x5; then
     _BITCOIN_QT_IS_STATIC
     if test x$bitcoin_cv_static_qt = xyes; then
@@ -167,6 +169,7 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
     fi
   fi
   CPPFLAGS=$TEMP_CPPFLAGS
+  CXXFLAGS=$TEMP_CXXFLAGS
   ])
 
   if test x$use_pkgconfig$qt_bin_path = xyes; then
@@ -358,6 +361,8 @@ dnl Outputs: bitcoin_qt_got_major_vers is set to "4" or "5".
 dnl Outputs: have_qt_test and have_qt_dbus are set (if applicable) to yes|no.
 AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG],[
   TEMP_CPPFLAGS="$CPPFLAGS"
+  TEMP_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$PIC_FLAGS $CXXFLAGS"
   TEMP_LIBS="$LIBS"
   BITCOIN_QT_CHECK([
     if test x$qt_include_path != x; then
@@ -427,6 +432,7 @@ AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG],[
     fi
   ])
   CPPFLAGS="$TEMP_CPPFLAGS"
+  CXXFLAGS="$TEMP_CXXFLAGS"
   LIBS="$TEMP_LIBS"
 ])
 

configure.ac

@@ -315,6 +315,7 @@ case $host in
 
      AX_CHECK_LINK_FLAG([[-Wl,-headerpad_max_install_names]], [LDFLAGS="$LDFLAGS -Wl,-headerpad_max_install_names"])
      CPPFLAGS="$CPPFLAGS -DMAC_OSX"
+     OBJCXXFLAGS="$CXXFLAGS"
      ;;
    *linux*)
      TARGET_OS=linux
@@ -406,6 +407,11 @@ if test x$use_glibc_compat != xno; then
 
 fi
 
+if test x$TARGET_OS != xwindows; then
+  # All windows code is PIC, forcing it on just adds useless compile warnings
+  AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
+fi
+
 if test x$use_hardening != xno; then
   AX_CHECK_COMPILE_FLAG([-Wstack-protector],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -Wstack-protector"])
   AX_CHECK_COMPILE_FLAG([-fstack-protector-all],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-protector-all"])
@@ -423,8 +429,7 @@ if test x$use_hardening != xno; then
   AX_CHECK_LINK_FLAG([[-Wl,-z,now]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-z,now"])
 
   if test x$TARGET_OS != xwindows; then
-    # All windows code is PIC, forcing it on just adds useless compile warnings
+    AX_CHECK_COMPILE_FLAG([-fPIE],[PIE_FLAGS="-fPIE"])
-    AX_CHECK_COMPILE_FLAG([-fPIE],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fPIE"])
     AX_CHECK_LINK_FLAG([[-pie]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -pie"])
   fi
 
@@ -433,11 +438,6 @@ if test x$use_hardening != xno; then
        AC_CHECK_LIB([ssp],      [main],, AC_MSG_ERROR(lib missing))
     ;;
   esac
-
-  CXXFLAGS="$CXXFLAGS $HARDENED_CXXFLAGS"
-  CPPFLAGS="$CPPFLAGS $HARDENED_CPPFLAGS"
-  LDFLAGS="$LDFLAGS $HARDENED_LDFLAGS"
-  OBJCXXFLAGS="$CXXFLAGS"
 fi
 
 dnl this flag screws up non-darwin gcc even when the check fails. special-case it.
@@ -871,6 +871,11 @@ AC_SUBST(CLIENT_VERSION_IS_RELEASE, _CLIENT_VERSION_IS_RELEASE)
 AC_SUBST(COPYRIGHT_YEAR, _COPYRIGHT_YEAR)
 
 AC_SUBST(RELDFLAGS)
+AC_SUBST(HARDENED_CXXFLAGS)
+AC_SUBST(HARDENED_CPPFLAGS)
+AC_SUBST(HARDENED_LDFLAGS)
+AC_SUBST(PIC_FLAGS)
+AC_SUBST(PIE_FLAGS)
 AC_SUBST(LIBTOOL_APP_LDFLAGS)
 AC_SUBST(USE_UPNP)
 AC_SUBST(USE_QRCODE)

src/Makefile.am

@@ -1,6 +1,8 @@
 DIST_SUBDIRS = secp256k1
-AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS)
 
+AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS)
+AM_CXXFLAGS = $(HARDENED_CXXFLAGS)
+AM_CPPFLAGS = $(HARDENED_CPPFLAGS)
 
 if EMBEDDED_LEVELDB
 LEVELDB_CPPFLAGS += -I$(srcdir)/leveldb/include
@@ -14,7 +16,7 @@ $(LIBLEVELDB): $(LIBMEMENV)
 $(LIBLEVELDB) $(LIBMEMENV):
 	@echo "Building LevelDB ..." && $(MAKE) -C $(@D) $(@F) CXX="$(CXX)" \
 	  CC="$(CC)" PLATFORM=$(TARGET_OS) AR="$(AR)" $(LEVELDB_TARGET_FLAGS) \
-          OPT="$(CXXFLAGS) $(CPPFLAGS)"
+          OPT="$(AM_CXXFLAGS) $(PIE_FLAGS) $(CXXFLAGS) $(AM_CPPFLAGS) $(CPPFLAGS)"
 endif
 
 BITCOIN_CONFIG_INCLUDES=-I$(builddir)/config
@@ -159,7 +161,8 @@ obj/build.h: FORCE
 libbitcoin_util_a-clientversion.$(OBJEXT): obj/build.h
 
 # server: shared between bitcoind and bitcoin-qt
-libbitcoin_server_a_CPPFLAGS = $(BITCOIN_INCLUDES) $(MINIUPNPC_CPPFLAGS)
+libbitcoin_server_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(MINIUPNPC_CPPFLAGS)
+libbitcoin_server_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libbitcoin_server_a_SOURCES = \
   addrman.cpp \
   alert.cpp \
@@ -190,7 +193,8 @@ libbitcoin_server_a_SOURCES = \
 
 # wallet: shared between bitcoind and bitcoin-qt, but only linked
 # when wallet enabled
-libbitcoin_wallet_a_CPPFLAGS = $(BITCOIN_INCLUDES)
+libbitcoin_wallet_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+libbitcoin_wallet_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libbitcoin_wallet_a_SOURCES = \
   db.cpp \
   crypter.cpp \
@@ -202,7 +206,8 @@ libbitcoin_wallet_a_SOURCES = \
   $(BITCOIN_CORE_H)
 
 # crypto primitives library
-crypto_libbitcoin_crypto_a_CPPFLAGS = $(BITCOIN_CONFIG_INCLUDES)
+crypto_libbitcoin_crypto_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_CONFIG_INCLUDES)
+crypto_libbitcoin_crypto_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 crypto_libbitcoin_crypto_a_SOURCES = \
   crypto/sha1.cpp \
   crypto/sha256.cpp \
@@ -221,6 +226,8 @@ crypto_libbitcoin_crypto_a_SOURCES = \
   crypto/ripemd160.h
 
 # univalue JSON library
+univalue_libbitcoin_univalue_a_CPPFLAGS = $(AM_CPPFLAGS)
+univalue_libbitcoin_univalue_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 univalue_libbitcoin_univalue_a_SOURCES = \
   univalue/univalue.cpp \
   univalue/univalue_read.cpp \
@@ -229,7 +236,8 @@ univalue_libbitcoin_univalue_a_SOURCES = \
   univalue/univalue.h
 
 # common: shared between bitcoind, and bitcoin-qt and non-server tools
-libbitcoin_common_a_CPPFLAGS = $(BITCOIN_INCLUDES)
+libbitcoin_common_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+libbitcoin_common_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libbitcoin_common_a_SOURCES = \
   allocators.cpp \
   amount.cpp \
@@ -259,7 +267,8 @@ libbitcoin_common_a_SOURCES = \
 # util: shared between all executables.
 # This library *must* be included to make sure that the glibc
 # backward-compatibility objects and their sanity checks are linked.
-libbitcoin_util_a_CPPFLAGS = $(BITCOIN_INCLUDES)
+libbitcoin_util_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+libbitcoin_util_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libbitcoin_util_a_SOURCES = \
   compat/strnlen.cpp \
   compat/glibc_sanity.cpp \
@@ -282,7 +291,8 @@ libbitcoin_util_a_SOURCES += compat/glibcxx_compat.cpp
 endif
 
 # cli: shared between bitcoin-cli and bitcoin-qt
-libbitcoin_cli_a_CPPFLAGS = $(BITCOIN_INCLUDES)
+libbitcoin_cli_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+libbitcoin_cli_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libbitcoin_cli_a_SOURCES = \
   rpcclient.cpp \
   $(BITCOIN_CORE_H)
@@ -312,7 +322,8 @@ bitcoind_SOURCES += bitcoind-res.rc
 endif
 
 bitcoind_LDADD += $(BOOST_LIBS) $(BDB_LIBS) $(SSL_LIBS) $(CRYPTO_LIBS) $(MINIUPNPC_LIBS)
-bitcoind_CPPFLAGS = $(BITCOIN_INCLUDES)
+bitcoind_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+bitcoind_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 bitcoind_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
 
 # bitcoin-cli binary #
@@ -326,7 +337,8 @@ bitcoin_cli_LDADD = \
 bitcoin_cli_SOURCES = \
   bitcoin-cli.cpp
 
-bitcoin_cli_CPPFLAGS = $(BITCOIN_INCLUDES)
+bitcoin_cli_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+bitcoin_cli_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 #
 
 # bitcoin-tx binary #
@@ -340,7 +352,8 @@ bitcoin_tx_LDADD = \
   $(CRYPTO_LIBS)
 
 bitcoin_tx_SOURCES = bitcoin-tx.cpp
-bitcoin_tx_CPPFLAGS = $(BITCOIN_INCLUDES)
+bitcoin_tx_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
+bitcoin_tx_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 #
 bitcoin_tx_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
 
@@ -373,9 +386,10 @@ if GLIBC_BACK_COMPAT
   libbitcoinconsensus_la_SOURCES += compat/glibcxx_compat.cpp
 endif
 
-libbitcoinconsensus_la_LDFLAGS = -no-undefined $(RELDFLAGS)
+libbitcoinconsensus_la_LDFLAGS = $(AM_LDFLAGS) -no-undefined $(RELDFLAGS)
 libbitcoinconsensus_la_LIBADD = $(CRYPTO_LIBS)
-libbitcoinconsensus_la_CPPFLAGS = $(CRYPTO_CFLAGS) -I$(builddir)/obj -DBUILD_BITCOIN_INTERNAL
+libbitcoinconsensus_la_CPPFLAGS = $(AM_CPPFLAGS) $(CRYPTO_CFLAGS) -I$(builddir)/obj -DBUILD_BITCOIN_INTERNAL
+libbitcoinconsensus_la_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 if USE_LIBSECP256K1
 libbitcoinconsensus_la_LIBADD += secp256k1/libsecp256k1.la
 endif
@@ -399,7 +413,7 @@ clean-local:
 
 .mm.o:
 	$(AM_V_CXX) $(OBJCXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
-	  $(CPPFLAGS) $(AM_CXXFLAGS) $(QT_INCLUDES) $(CXXFLAGS)  -c -o $@ $<
+	  $(CPPFLAGS) $(AM_CXXFLAGS) $(QT_INCLUDES) $(AM_CXXFLAGS) $(PIE_FLAGS) $(CXXFLAGS) -c -o $@ $<
 
 %.pb.cc %.pb.h: %.proto
 	@test -f $(PROTOC)

src/Makefile.qt.include

@@ -322,8 +322,9 @@ BITCOIN_RC = qt/res/bitcoin-qt-res.rc
 BITCOIN_QT_INCLUDES = -I$(builddir)/qt -I$(srcdir)/qt -I$(srcdir)/qt/forms \
   -I$(builddir)/qt/forms
 
-qt_libbitcoinqt_a_CPPFLAGS = $(BITCOIN_INCLUDES) $(BITCOIN_QT_INCLUDES) \
+qt_libbitcoinqt_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(BITCOIN_QT_INCLUDES) \
   $(QT_INCLUDES) $(QT_DBUS_INCLUDES) $(PROTOBUF_CFLAGS) $(QR_CFLAGS)
+qt_libbitcoinqt_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 
 qt_libbitcoinqt_a_SOURCES = $(BITCOIN_QT_CPP) $(BITCOIN_QT_H) $(QT_FORMS_UI) \
   $(QT_QRC) $(QT_QRC_LOCALE) $(QT_TS) $(PROTOBUF_PROTO) $(RES_ICONS) $(RES_IMAGES) $(RES_MOVIES)
@@ -345,8 +346,9 @@ $(QT_MOC): $(PROTOBUF_H)
 $(QT_MOC_CPP): $(PROTOBUF_H)
 
 # bitcoin-qt binary #
-qt_bitcoin_qt_CPPFLAGS = $(BITCOIN_INCLUDES) $(BITCOIN_QT_INCLUDES) \
+qt_bitcoin_qt_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(BITCOIN_QT_INCLUDES) \
   $(QT_INCLUDES) $(PROTOBUF_CFLAGS) $(QR_CFLAGS)
+qt_bitcoin_qt_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 
 qt_bitcoin_qt_SOURCES = qt/bitcoin.cpp
 if TARGET_DARWIN

src/Makefile.qttest.include

@@ -12,7 +12,7 @@ TEST_QT_H = \
   qt/test/paymentrequestdata.h \
   qt/test/paymentservertests.h
 
-qt_test_test_bitcoin_qt_CPPFLAGS = $(BITCOIN_INCLUDES) $(BITCOIN_QT_INCLUDES) \
+qt_test_test_bitcoin_qt_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(BITCOIN_QT_INCLUDES) \
   $(QT_INCLUDES) $(QT_TEST_INCLUDES) $(PROTOBUF_CFLAGS)
 
 qt_test_test_bitcoin_qt_SOURCES = \
@@ -34,6 +34,7 @@ qt_test_test_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBIT
   $(LIBMEMENV) $(BOOST_LIBS) $(QT_DBUS_LIBS) $(QT_TEST_LIBS) $(QT_LIBS) \
   $(QR_LIBS) $(PROTOBUF_LIBS) $(BDB_LIBS) $(SSL_LIBS) $(CRYPTO_LIBS) $(MINIUPNPC_LIBS) $(LIBSECP256K1)
 qt_test_test_bitcoin_qt_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(QT_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
+qt_test_test_bitcoin_qt_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 
 CLEAN_BITCOIN_QT_TEST = $(TEST_QT_MOC_CPP) qt/test/*.gcda qt/test/*.gcno
 

src/Makefile.test.include

@@ -80,9 +80,10 @@ BITCOIN_TESTS += \
 endif
 
 test_test_bitcoin_SOURCES = $(BITCOIN_TESTS) $(JSON_TEST_FILES) $(RAW_TEST_FILES)
-test_test_bitcoin_CPPFLAGS = $(BITCOIN_INCLUDES) -I$(builddir)/test/ $(TESTDEFS)
+test_test_bitcoin_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -I$(builddir)/test/ $(TESTDEFS)
 test_test_bitcoin_LDADD = $(LIBBITCOIN_SERVER) $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL) $(LIBBITCOIN_CRYPTO) $(LIBBITCOIN_UNIVALUE) $(LIBLEVELDB) $(LIBMEMENV) \
   $(BOOST_LIBS) $(BOOST_UNIT_TEST_FRAMEWORK_LIB) $(LIBSECP256K1)
+test_test_bitcoin_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 if ENABLE_WALLET
 test_test_bitcoin_LDADD += $(LIBBITCOIN_WALLET)
 endif