Quoting Tomoki Sekiyama (2013-07-23 17:45:31)
> Add configuration for C++ compiler in configure and Makefiles.
> The C++ compiler is choosed as following:
> - ${CXX}, if it is specified.
> - ${cross_prefix}g++, if ${cross_prefix} is specified.
> - Otherwise, c++ is used.
>
> Currently, usage of C++ language is only for access to Windows VSS
> using COM+ services in qemu-guest-agent for Windows.
>
> Signed-off-by: Tomoki Sekiyama <tomoki.sekiy...@hds.com>
> Reviewed-by: Laszlo Ersek <ler...@redhat.com>
Reviewed-by: Michael Roth <mdr...@linux.vnet.ibm.com>
> ---
> configure | 13 +++++++++++++
> rules.mak | 9 ++++++++-
> 2 files changed, 21 insertions(+), 1 deletion(-)
>
> diff --git a/configure b/configure
> index 7c45db2..5e89e5d 100755
> --- a/configure
> +++ b/configure
> @@ -252,6 +252,8 @@ for opt do
> ;;
> --cc=*) CC="$optarg"
> ;;
> + --cxx=*) CXX="$optarg"
> + ;;
> --source-path=*) source_path="$optarg"
> ;;
> --cpu=*) cpu="$optarg"
> @@ -282,6 +284,12 @@ else
> cc="${CC-${cross_prefix}gcc}"
> fi
>
> +if test -z "${CXX}${cross_prefix}"; then
> + cxx="c++"
> +else
> + cxx="${CXX-${cross_prefix}g++}"
> +fi
> +
> ar="${AR-${cross_prefix}ar}"
> as="${AS-${cross_prefix}as}"
> cpp="${CPP-$cc -E}"
> @@ -622,6 +630,8 @@ for opt do
> ;;
> --host-cc=*) host_cc="$optarg"
> ;;
> + --cxx=*)
> + ;;
> --objcc=*) objcc="$optarg"
> ;;
> --make=*) make="$optarg"
> @@ -1023,6 +1033,7 @@ echo " --cross-prefix=PREFIX use PREFIX for compile
> tools [$cross_prefix]"
> echo " --cc=CC use C compiler CC [$cc]"
> echo " --host-cc=CC use C compiler CC [$host_cc] for code run
> at"
> echo " build time"
> +echo " --cxx=CXX use C++ compiler CXX [$cxx]"
> echo " --objcc=OBJCC use Objective-C compiler OBJCC [$objcc]"
> echo " --extra-cflags=CFLAGS append extra C compiler flags QEMU_CFLAGS"
> echo " --extra-ldflags=LDFLAGS append extra linker flags LDFLAGS"
> @@ -3499,6 +3510,7 @@ fi
> echo "Source path $source_path"
> echo "C compiler $cc"
> echo "Host C compiler $host_cc"
> +echo "C++ compiler $cxx"
> echo "Objective-C compiler $objcc"
> echo "CFLAGS $CFLAGS"
> echo "QEMU_CFLAGS $QEMU_CFLAGS"
> @@ -4076,6 +4088,7 @@ echo "PYTHON=$python" >> $config_host_mak
> echo "CC=$cc" >> $config_host_mak
> echo "CC_I386=$cc_i386" >> $config_host_mak
> echo "HOST_CC=$host_cc" >> $config_host_mak
> +echo "CXX=$cxx" >> $config_host_mak
> echo "OBJCC=$objcc" >> $config_host_mak
> echo "AR=$ar" >> $config_host_mak
> echo "AS=$as" >> $config_host_mak
> diff --git a/rules.mak b/rules.mak
> index 4499745..abc2e84 100644
> --- a/rules.mak
> +++ b/rules.mak
> @@ -8,9 +8,13 @@ MAKEFLAGS += -rR
> %.d:
> %.h:
> %.c:
> +%.cpp:
> %.m:
> %.mak:
>
> +# Flags for C++ compilation
> +QEMU_CXXFLAGS = -D__STDC_LIMIT_MACROS $(filter-out -Wstrict-prototypes
> -Wmissing-prototypes -Wnested-externs -Wold-style-declaration
> -Wold-style-definition -Wredundant-decls, $(QEMU_CFLAGS))
> +
> # Flags for dependency generation
> QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d
>
> @@ -50,6 +54,9 @@ endif
> %.o: %.asm
> $(call quiet-command,$(AS) $(ASFLAGS) -o $@ $<," AS
> $(TARGET_DIR)$@")
>
> +%.o: %.cpp
> + $(call quiet-command,$(CXX) $(QEMU_INCLUDES) $(QEMU_CXXFLAGS)
> $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," CXX $(TARGET_DIR)$@")
> +
> %.o: %.m
> $(call quiet-command,$(OBJCC) $(QEMU_INCLUDES) $(QEMU_CFLAGS)
> $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," OBJC $(TARGET_DIR)$@")
>
> @@ -70,7 +77,7 @@ quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
> cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
> >/dev/null 2>&1 && echo OK), $2, $3)
>
> -VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi %.sh %.rc
> +VPATH_SUFFIXES = %.c %.h %.S %.cpp %.m %.mak %.texi %.sh %.rc
> set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath
> $(PATTERN) $1)))
>
> # find-in-path
