1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
# FP_CPP_CMD_WITH_ARGS()
# ----------------------
# sets CPP command and its arguments
#
# $1 = CC (unmodified)
# $2 = the variable to set to CPP command
# $3 = the variable to set to CPP command arguments
#
# The reason for using the non-standard --with-cpp and --with-cpp-flags instead
# of the standard CPP and CPPFLAGS is that autoconf sets CPP to "$CC -E",
# whereas we expect the CPP command to be configured as a standalone executable
# rather than a command. These are symmetrical with --with-hs-cpp and
# --with-hs-cpp-flags.
AC_DEFUN([FP_CPP_CMD_WITH_ARGS],[
AC_ARG_WITH(cpp,
[AS_HELP_STRING([--with-cpp=ARG],
[Path to the (C) preprocessor [default=autodetect].
If you set --with-cpp=CC, ensure -E is included in --with-cpp-flags])],
[
if test "$HostOS" = "mingw32"
then
AC_MSG_WARN([Request to use $withval will be ignored])
else
CPP_CMD="$withval"
fi
],
[
# We can't use the CPP var here, since CPP_CMD is expected to be a single
# command (no flags), and autoconf defines CPP as "/usr/bin/gcc -E".
# So we use CC with -E by default
CPP_CMD="$1"
CPP_ARGS="-E"
]
)
AC_ARG_WITH(cpp-flags,
[AS_HELP_STRING([--with-cpp-flags=ARG],
[Flags to the (C) preprocessor [default=autodetect]])],
[
if test "$HostOS" = "mingw32"
then
AC_MSG_WARN([Request to use $withval will be ignored])
else
# Use whatever flags were manually set, ignoring previously configured
# flags; and add CPP_ARGS (which will be -E if CPP_CMD was not specified)
CPP_ARGS="$CPP_ARGS $withval"
USER_CPP_ARGS="$withval"
fi
],
[
# Augment CPP_ARGS with whatever flags were previously configured and passed
# as an argument.
CPP_ARGS="$$3 $CPP_ARGS"
])
$2="$CPP_CMD"
$3="$CPP_ARGS"
# Clear CPP_CMD and CPP_ARGS
unset CPP_CMD
unset CPP_ARGS
])
|
