要查看我要执行的操作，请参见以下内容：
我的问题是如何有条件地设置AM_CPPFLAGS或
我的Makefile.am中的my_lib_la_CPPFLAGS。这样在配置时
是否设置了正确的CPPFLAGS？
目前，我正在做一些影响以下方面的事情：
lib_xml_wrapper_la_CPPFLAGS = -I../../
UNAME_S = $(shell uname -s)
UNAME_P = $(shell uname -p)
ifeq ($(UNAME_S),Linux)
lib_xml_wrapper_la_CPPFLAGS += -DLINUX
ifeq ($(UNAME_P),x86_64)
lib_xml_wrapper_la_CPPFLAGS += -D AMD64
endif
ifeq ($(UNAME_P),x86_64)
lib_xml_wrapper_la_CPPFLAGS += -I../../../external/xerces-c-3.1.1-x86_64-linux-gcc-3.4/include/
endif
ifneq ($(filter %86,$(UNAME_P)),)
lib_xml_wrapper_la_CPPFLAGS += -I../../../external/xerces-c-3.1.1-x86-linux-gcc-3.4/include/
endif
ifneq ($(filter arm%,$(UNAME_P)),)
lib_xml_wrapper_la_CPPFLAGS +=
endif
endif
ifeq ($(UNAME_S),Darwin)
lib_xml_wrapper_la_CPPFLAGS += -DOSX
ifneq ($(filter %86,$(UNAME_P)),)
lib_xml_wrapper_la_CPPFLAGS += -I../../../external/xerces-c-3.1.1-x86-macosx-gcc-3.4/include/
endif
ifneq ($(filter arm%,$(UNAME_P)),)
lib_xml_wrapper_la_CPPFLAGS +=
endif
endif
这似乎在Makefile.am中不起作用。我收到以下错误：
xml_wrapper/Makefile.am:26: error: endif without if
xml_wrapper/Makefile.am:35: error: endif without if
automake: warnings are treated as errors
xml_wrapper/Makefile.am:10: warning: shell uname -s: non-POSIX variable name
xml_wrapper/Makefile.am:10: (probably a GNU make extension)
xml_wrapper/Makefile.am:11: warning: shell uname -p: non-POSIX variable name
xml_wrapper/Makefile.am:11: (probably a GNU make extension)
xml_wrapper/Makefile.am:20: warning: filter %86,$(UNAME_P: non-POSIX variable name
xml_wrapper/Makefile.am:20: (probably a GNU make extension)
xml_wrapper/Makefile.am:23: warning: filter arm%,$(UNAME_P: non-POSIX variable name
xml_wrapper/Makefile.am:23: (probably a GNU make extension)
xml_wrapper/Makefile.am:29: warning: filter %86,$(UNAME_P: non-POSIX variable name
xml_wrapper/Makefile.am:29: (probably a GNU make extension)
xml_wrapper/Makefile.am:32: warning: filter arm%,$(UNAME_P: non-POSIX variable name
xml_wrapper/Makefile.am:32: (probably a GNU make extension)
最佳答案
在configure.ac中可以更好地选择CPU和OS，该软件具有AC_CANONICAL_HOST可以解析uname的输出并将其以标准格式放置：
configure.ac
...
AC_CANONICAL_HOST
WRAPPER_CPPFLAGS=""
AS_CASE([$host_os],
[linux*],
[
WRAPPER_CPPFLAGS="$WRAPPER_CPPFLAGS -DLINUX"
AS_CASE([$host_cpu],
[x86_64],
[
WRAPPER_CPPFLAGS="$WRAPPER_CPPFLAGS -DAMD64 -I../../../external/xerces-c-3.1.1-x86_64-linux-gcc-3.4/include"
],
[i?86],
[
WRAPPER_CPPFLAGS="$WRAPPER_CPPFLAGS -I../../../external/xerces-c-3.1.1-x86-linux-gcc-3.4/include"
])
],
[darwin*],
[
WRAPPER_CPPFLAGS="$WRAPPER_CPPFLAGS -DOSX"
AS_CASE([$host_cpu],
[i?86],
[
WRAPPER_CPPFLAGS="$WRAPPER_CPPFLAGS -I../../../external/xerces-c-3.1.1-x86-macosx-gcc-3.4/include"
])
])
AC_SUBST([WRAPPER_CPPFLAGS])
Makefile.am
...
lib_xml_wrapper_la_CPPFLAGS = -I../.. $(WRAPPER_CPPFLAGS)