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