1: dnl Process this file with autoconf to produce a configure script.
2: AC_INIT(engine.c)
3:
4: AC_ARG_ENABLE(force-reg,
5: [ --enable-force-reg Use explicit register declarations if they appear in
6: the machine.h file. This can cause a good speedup,
7: but also incorrect code with some gcc versions on
8: some processors (default disabled).],
9:
10: AC_DEFINE(FORCE_REG))
11: dnl this is not quite according to the autoconf manual, it causes a replacement
12: AC_ARG_ENABLE(direct-threaded,
13: [ --enable-direct-threaded Force direct threading. This may not work on
14: some machines and may cause slowdown on others.
15: (default processor-dependent)],
16: AC_DEFINE(DIRECT_THREADED))
17: AC_ARG_ENABLE(indirect-threaded,
18: [ --enable-indirect-threaded Force indirect threading. This can cause a
19: slowdown on some machines.
20: (default processor-dependent)],
21: AC_DEFINE(INDIRECT_THREADED))
22:
23: AC_ARG_WITH(debug,
24: [ --with-debug specifies option -g to compile with debug info (default)
25: --without-debug omits the -g switch and creates smaller images on
26: machines where "strip" has problems with gcc style
27: debugging informations.],
28: if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
29:
30: CFLAGS=$CFLAGS
31:
32: AC_PROG_CC
33:
34: if test "$GCC" = "yes"
35: then
36: echo "Fine, gcc is available"
37: else
38: cat <<'EOF'
39: Gforth requires GCC-2.0 or higher (it uses GNU C extensions).
40: It does not work with other C compilers. Please install the GNU C compiler,
41: and try again (or search for a binary distribution for your platform).
42: EOF
43: exit 1
44: fi
45:
46: AC_SUBST(CC)
47: AC_SUBST(GCCLDFLAGS)
48: AC_SUBST(DEBUGFLAG)
49:
50: dnl the following macro produces a warning with autoconf-2.1
51: AC_CHECK_SIZEOF(char *)
52: case "$ac_cv_sizeof_char_p" in
53: 2)
54: wordsize=16
55: ;;
56: 4)
57: wordsize=32
58: ;;
59: 8)
60: wordsize=64
61: dnl AC_CHECK_SIZEOF(long long)
62: dnl if [ $ac_cv_sizeof_long_long != 16 ]
63: dnl then
64: dnl try the whole thing with -mlonglong128
65: dnl complain about C compiler and OS vendor
66: dnl fi
67: ;;
68: esac
69:
70: #terminology is a bit unusual here: The host is the system on which
71: #gforth will run; the system on which configure will run is the `build'
72: AC_CANONICAL_HOST
73: case "$host_cpu" in
74: hppa*)
75: mach_h=hppa
76: LIBOBJS="cache.o"
77: LDFLAGS="-Xlinker -N"
78: LIBS="-L/lib/pa1.1/"
79: ;;
80: sparc*)
81: mach_h=sparc
82: ;;
83: i386|i486|i586)
84: mach_h=386
85: CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem"
86: #!! direct/indirect threading switch
87: #!! -m486 flag
88: ;;
89: mips*)
90: mach_h=mips
91: #link text and data segment into the same 256M region!
92: GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
93: ;;
94: alpha*)
95: mach_h=alpha
96: echo Very Preliminary Support for Alpha!!!
97: ;;
98: *)
99: echo "No direct threading support for $host_cpu, using indirect threading."
100: echo "Using a generic machine description. It will only work if char * AND"
101: echo "long values have the same size and long long is twice as long."
102: echo "I'll assume that C floats and doubles are represented by IEEE single and"
103: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
104: echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!"
105: mach_h=32bit
106: esac
107: AC_SUBST(host)
108: AC_SUBST(ENGINE_FLAGS)
109:
110: dnl Now a little support for DOS/DJGCC
111: AC_SUBST(MAKE_EXE)
112: MAKE_EXE=""
113:
114: dnl copy commands for systems that don't have links
115: AC_SUBST(LINK_KERNL16L)
116: LINK_KERNL16L=""
117: AC_SUBST(LINK_KERNL16B)
118: LINK_KERNL16B=""
119: AC_SUBST(LINK_KERNL32L)
120: LINK_KERNL32L=""
121: AC_SUBST(LINK_KERNL32B)
122: LINK_KERNL32B=""
123: AC_SUBST(LINK_KERNL64L)
124: LINK_KERNL64L=""
125: AC_SUBST(LINK_KERNL64B)
126: LINK_KERNL64B=""
127:
128: #if test $host_os=dos
129: #then
130: # echo Configuring for DOS!!!
131: # MAKE_EXE="coff2exe gforth"
132: # LINK_KERNL32L='$(CP) kernl32l.fi kernal.fi'
133: #fi
134:
135: dnl the following macro produces a warning with autoconf-2.1
136: AC_C_BIGENDIAN
137: AC_SUBST(KERNAL)
138: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
139: if test $ac_cv_c_bigendian = yes; then
140: bytesex=b
141: KERNAL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
142: else
143: bytesex=l
144: KERNAL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
145: fi
146:
147: dnl Checks for programs.
148: AC_PROG_LN_S
149: AC_PROG_INSTALL
150:
151: dnl Checks for library functions
152: dnl This check is just for making later checks link with libm.
153: dnl using sin here is no good idea since it is built-into gcc and typechecked
154: AC_CHECK_LIB(m,asin)
155: AC_FUNC_MEMCMP
156: AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal)
157: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
158: AC_SUBST(getopt_long)
159: AC_CHECK_FUNCS(rint expm1 log1p)
160: AC_REPLACE_FUNCS(ecvt)
161: dnl No check for select, because our replacement is no good under
162: dnl anything but DOS
163:
164: kernal_fi=kernl${wordsize}${bytesex}.fi
165: AC_SUBST(kernal_fi)
166:
167: AC_LINK_FILES(${mach_h}.h $kernal_fi,machine.h kernal.fi)
168: AC_OUTPUT(Makefile)
169:
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