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build: add --enable-werror option

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This turns some compiler warnings into errors. Useful for c-i.
This commit is contained in:
Cory Fields 2017-02-21 11:56:26 -05:00
parent b602fe0f73
commit 205830a37b
2 changed files with 18 additions and 1 deletions
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17
configure.ac
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@ -192,6 +192,13 @@ AC_ARG_ENABLE([debug],
[enable_debug=$enableval], [enable_debug=$enableval],
[enable_debug=no]) [enable_debug=no])
# Turn warnings into errors
AC_ARG_ENABLE([werror],
[AS_HELP_STRING([--enable-werror],
[Treat certain compiler warnings as errors (default is no)])],
[enable_werror=$enableval],
[enable_werror=no])
AC_LANG_PUSH([C++]) AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""]) AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""])
@ -206,6 +213,14 @@ if test "x$enable_debug" = xyes; then
fi fi
fi fi
ERROR_CXXFLAGS=
if test "x$enable_werror" = "xyes"; then
if test "x$CXXFLAG_WERROR" = "x"; then
AC_MSG_ERROR("enable-werror set but -Werror is not usable")
fi
AX_CHECK_COMPILE_FLAG([-Werror=vla],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=vla"],,[[$CXXFLAG_WERROR]])
fi
if test "x$CXXFLAGS_overridden" = "xno"; then if test "x$CXXFLAGS_overridden" = "xno"; then
AX_CHECK_COMPILE_FLAG([-Wall],[CXXFLAGS="$CXXFLAGS -Wall"],,[[$CXXFLAG_WERROR]]) AX_CHECK_COMPILE_FLAG([-Wall],[CXXFLAGS="$CXXFLAGS -Wall"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wextra],[CXXFLAGS="$CXXFLAGS -Wextra"],,[[$CXXFLAG_WERROR]]) AX_CHECK_COMPILE_FLAG([-Wextra],[CXXFLAGS="$CXXFLAGS -Wextra"],,[[$CXXFLAG_WERROR]])
@ -1067,6 +1082,7 @@ AC_SUBST(BITCOIN_CLI_NAME)
AC_SUBST(BITCOIN_TX_NAME) AC_SUBST(BITCOIN_TX_NAME)
AC_SUBST(RELDFLAGS) AC_SUBST(RELDFLAGS)
AC_SUBST(ERROR_CXXFLAGS)
AC_SUBST(HARDENED_CXXFLAGS) AC_SUBST(HARDENED_CXXFLAGS)
AC_SUBST(HARDENED_CPPFLAGS) AC_SUBST(HARDENED_CPPFLAGS)
AC_SUBST(HARDENED_LDFLAGS) AC_SUBST(HARDENED_LDFLAGS)
@ -1156,6 +1172,7 @@ echo " with test = $use_tests"
echo " with bench = $use_bench" echo " with bench = $use_bench"
echo " with upnp = $use_upnp" echo " with upnp = $use_upnp"
echo " debug enabled = $enable_debug" echo " debug enabled = $enable_debug"
echo " werror = $enable_werror"
echo echo
echo " target os = $TARGET_OS" echo " target os = $TARGET_OS"
echo " build os = $BUILD_OS" echo " build os = $BUILD_OS"

2
src/Makefile.am
View File

@ -5,7 +5,7 @@
DIST_SUBDIRS = secp256k1 univalue DIST_SUBDIRS = secp256k1 univalue
AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS) AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS)
AM_CXXFLAGS = $(HARDENED_CXXFLAGS) AM_CXXFLAGS = $(HARDENED_CXXFLAGS) $(ERROR_CXXFLAGS)
AM_CPPFLAGS = $(HARDENED_CPPFLAGS) AM_CPPFLAGS = $(HARDENED_CPPFLAGS)
EXTRA_LIBRARIES = EXTRA_LIBRARIES =