Annotation of gforth/configure.in, revision 1.8
1.1 anton 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:
1.7 anton 23: AC_SUBST(GCCLDFLAGS)
24:
1.1 anton 25: #terminology is a bit unusual here: The host is the system on which
26: #gforth will run; the system on which configure will run is the `build'
27: AC_CANONICAL_HOST
28: case "$host_cpu" in
29: hppa*)
30: mach_h=hppa
1.3 pazsan 31: LIBOBJS="cache.o"
1.6 pazsan 32: LDFLAGS="-Xlinker -N"
33: LIBS="-L/lib/pa1.1/"
1.1 anton 34: ;;
35: sparc*)
36: mach_h=sparc
37: ;;
38: i386|i486|i586)
39: mach_h=386
40: #!! direct/indirect threading switch
41: #!! -m486 flag
42: ;;
43: m68*)
44: mach_h=m68k
45: ;;
46: mips*)
47: mach_h=mips
1.7 anton 48: #link text and data segment into the same 256M region!
49: GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
50: #this works on Ultrix, but not on Irix
51: #for now use indirect threading under Irix
1.1 anton 52: ;;
53: *)
54: echo "No direct threading support for $host_cpu, using indirect threading."
55: echo "Using a generic 32-bit machine description. It will only work if char * AND"
56: echo "long values have 32 bits."
57: echo "I'll assume that C floats and doubles are represented by IEEE single and"
58: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
59: mach_h=32bit
60: esac
61:
62: dnl Now a little support for DOS/DJGCC
63: AC_SUBST(MAKE_EXE)
64: MAKE_EXE=""
65:
66: dnl copy commands for systems that don't have links
1.6 pazsan 67: AC_SUBST(LINK_KERNL16L)
68: LINK_KERNL16L=""
69: AC_SUBST(LINK_KERNL16B)
70: LINK_KERNL16B=""
1.1 anton 71: AC_SUBST(LINK_KERNL32L)
72: LINK_KERNL32L=""
73: AC_SUBST(LINK_KERNL32B)
74: LINK_KERNL32B=""
1.6 pazsan 75: AC_SUBST(LINK_KERNL64L)
76: LINK_KERNL64L=""
77: AC_SUBST(LINK_KERNL64B)
78: LINK_KERNL64B=""
1.1 anton 79:
80: #if test $host_os=dos
81: #then
82: # echo Configuring for DOS!!!
83: # MAKE_EXE="coff2exe gforth"
84: # LINK_KERNL32L='$(CP) kernl32l.fi gforth.fi'
85: #fi
86:
87: dnl the following macro produces a warning with autoconf-2.1
88: AC_C_BIGENDIAN
1.4 pazsan 89: AC_SUBST(KERNAL)
1.1 anton 90: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
91: if test $ac_cv_c_bigendian = yes; then
92: bytesex=b
1.6 pazsan 93: KERNAL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1 anton 94: else
95: bytesex=l
1.6 pazsan 96: KERNAL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1 anton 97: fi
98:
99: dnl Checks for programs.
100: AC_PROG_LN_S
101: AC_PROG_INSTALL
102:
103: dnl Checks for library functions
1.2 anton 104: dnl This check is just for making later checks link with libm.
105: dnl using sin here is no good idea since it is built-into gcc and typechecked
106: AC_CHECK_LIB(m,asin)
1.1 anton 107: AC_FUNC_MEMCMP
108: AC_REPLACE_FUNCS(memmove strtoul)
1.8 ! anton 109: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
1.1 anton 110: AC_SUBST(getopt_long)
1.5 anton 111: AC_CHECK_FUNCS(rint expm1 log1p pow10)
1.1 anton 112: AC_REPLACE_FUNCS(ecvt)
113: dnl No check for select, because our replacement is no good under
114: dnl anything but DOS
115:
1.8 ! anton 116: gforth_fi=kernl32${bytesex}.fi
! 117: AC_SUBST(gforth_fi)
! 118:
1.1 anton 119: dnl autoconf requires (implicitly) that AC_LINK_FILES is used only once
1.8 ! anton 120: AC_LINK_FILES(${mach_h}.h $gforth_fi,machine.h gforth.fi)
1.1 anton 121: AC_OUTPUT(Makefile)
122:
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