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Add CFG_CXXFLAGS_STD so CFG_CXXFLAGS_STD_NEWEST can still exist (#3881)

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This commit is contained in:
Wilson Snyder 2023-01-22 09:44:50 -05:00
parent 5cd3d831bb
commit 53835355b0
3 changed files with 14 additions and 10 deletions
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16
configure.ac
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@ -532,21 +532,22 @@ AC_DEFUN([_MY_CXX_CHECK_CXX_VER],
[_my_result=no])
])
# Add $CFG_CXXFLAGS_STD_NEWEST only if can't compile correctly otherwise,
# Add $CFG_CXXFLAGS_STD only if can't compile correctly otherwise,
# as adding std= when not needed can cause errors with the C++ std library.
CFG_CXXFLAGS_STD=$CFG_CXXFLAGS_STD_NEWEST
AC_MSG_CHECKING(whether $CXX supports C++11)
_MY_CXX_CHECK_CXX_VER()
AC_MSG_RESULT($_my_result)
if test "$_my_result" = "no" ; then
CXXFLAGS="$CXXFLAGS $CFG_CXXFLAGS_STD_NEWEST"
CFG_CXX_FLAGS_CMAKE="$CFG_CXX_FLAGS_CMAKE $CFG_CXXFLAGS_STD_NEWEST"
AC_MSG_CHECKING(whether $CXX supports C++11 with $CFG_CXXFLAGS_STD_NEWEST)
CXXFLAGS="$CXXFLAGS $CFG_CXXFLAGS_STD"
CFG_CXX_FLAGS_CMAKE="$CFG_CXX_FLAGS_CMAKE $CFG_CXXFLAGS_STD"
AC_MSG_CHECKING(whether $CXX supports C++11 with $CFG_CXXFLAGS_STD)
_MY_CXX_CHECK_CXX_VER()
AC_MSG_RESULT($_my_result)
else
# CFG_CXXFLAGS_STD_NEWEST is also propagated to include/verilated.mk.in
# make sure we use the same std flag while compiling verilator and verilated design
CFG_CXXFLAGS_STD_NEWEST=""
# CFG_CXXFLAGS_STD is also propagated to include/verilated.mk.in
# make sure we use the same std flag while compiling verilator and verilated design
CFG_CXXFLAGS_STD=""
fi
if test "$_my_result" = "no" ; then
AC_MSG_NOTICE([[]])
@ -555,6 +556,7 @@ if test "$_my_result" = "no" ; then
Verilator requires a C++11 or newer compiler.]])
fi
AC_SUBST(CFG_CXXFLAGS_STD)
# Checks for library functions.
AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec],

6
include/verilated.mk.in
View File

@ -21,7 +21,9 @@ CFG_WITH_LONGTESTS = @CFG_WITH_LONGTESTS@
# Compiler flags to enable profiling
CFG_CXXFLAGS_PROFILE = @CFG_CXXFLAGS_PROFILE@
# Select newest language
# Select language required to compile (often empty)
CFG_CXXFLAGS_STD = @CFG_CXXFLAGS_STD@
# Select newest language (unused by this Makefile, for some test's Makefiles)
CFG_CXXFLAGS_STD_NEWEST = @CFG_CXXFLAGS_STD_NEWEST@
# Compiler flags to use to turn off unused and generated code warnings, such as -Wno-div-by-zero
CFG_CXXFLAGS_NO_UNUSED = @CFG_CXXFLAGS_NO_UNUSED@
@ -140,7 +142,7 @@ endif
#######################################################################
##### Threaded builds
CPPFLAGS += $(CFG_CXXFLAGS_STD_NEWEST)
CPPFLAGS += $(CFG_CXXFLAGS_STD)
LDLIBS += $(CFG_LDLIBS_THREADS)
ifneq ($(VM_TIMING),0)

2
test_regress/Makefile_obj
View File

@ -41,7 +41,7 @@ CPPFLAGS += $(CPPFLAGS_ADD)
ifeq ($(CFG_WITH_LONGTESTS),yes)
ifeq ($(DRIVER_STD),newest)
CPPFLAGS += $(CFG_CXXFLAGS_STD_NEWEST)
CPPFLAGS += $(CFG_CXXFLAGS_STD)
endif
endif