diff options
| author | Cory Fields <cory-nospam-@coryfields.com> | 2017-02-21 11:56:26 -0500 |
|---|---|---|
| committer | Cory Fields <cory-nospam-@coryfields.com> | 2017-02-23 01:06:04 -0500 |
| commit | 205830a37b7ffa4f8fa306e5c9eafcee3777fa68 (patch) | |
| tree | d9f0cc4a4cae528d40417b54b2e755479688992e | |
| parent | b602fe0f7372256bd2bc8c116d23dee3253882f9 (diff) | |
build: add --enable-werror option
This turns some compiler warnings into errors. Useful for c-i.
| -rw-r--r-- | configure.ac | 17 | ||||
| -rw-r--r-- | src/Makefile.am | 2 |
2 files changed, 18 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 6142796014..7a02237df7 100644 --- a/configure.ac +++ b/configure.ac @@ -192,6 +192,13 @@ AC_ARG_ENABLE([debug], [enable_debug=$enableval], [enable_debug=no]) +# Turn warnings into errors +AC_ARG_ENABLE([werror], + [AS_HELP_STRING([--enable-werror], + [Treat certain compiler warnings as errors (default is no)])], + [enable_werror=$enableval], + [enable_werror=no]) + AC_LANG_PUSH([C++]) AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""]) @@ -206,6 +213,14 @@ if test "x$enable_debug" = xyes; then fi fi +ERROR_CXXFLAGS= +if test "x$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 AX_CHECK_COMPILE_FLAG([-Wall],[CXXFLAGS="$CXXFLAGS -Wall"],,[[$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(RELDFLAGS) +AC_SUBST(ERROR_CXXFLAGS) AC_SUBST(HARDENED_CXXFLAGS) AC_SUBST(HARDENED_CPPFLAGS) AC_SUBST(HARDENED_LDFLAGS) @@ -1156,6 +1172,7 @@ echo " with test = $use_tests" echo " with bench = $use_bench" echo " with upnp = $use_upnp" echo " debug enabled = $enable_debug" +echo " werror = $enable_werror" echo echo " target os = $TARGET_OS" echo " build os = $BUILD_OS" diff --git a/src/Makefile.am b/src/Makefile.am index a2072865a3..e8d22313dc 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -5,7 +5,7 @@ DIST_SUBDIRS = secp256k1 univalue AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS) -AM_CXXFLAGS = $(HARDENED_CXXFLAGS) +AM_CXXFLAGS = $(HARDENED_CXXFLAGS) $(ERROR_CXXFLAGS) AM_CPPFLAGS = $(HARDENED_CPPFLAGS) EXTRA_LIBRARIES = |