Annotation of gforth/configure.in, revision 1.10
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:
1.9 pazsan 23: AC_ARG_WITH(debug,
1.10 ! anton 24: [ --with-debug specifies option -g to compile with debug info (default)
1.9 pazsan 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 "$withval" = "yes"; then DEBUGFLAG=-g; fi)
29:
30:
1.7 anton 31: AC_SUBST(GCCLDFLAGS)
1.9 pazsan 32: AC_SUBST(DEBUGFLAG)
1.7 anton 33:
1.10 ! anton 34: dnl the following macro produces a warning with autoconf-2.1
! 35: AC_CHECK_SIZEOF(char *)
! 36: case "$ac_cv_sizeof_char_p" in
! 37: 2)
! 38: wordsize=16
! 39: ;;
! 40: 4)
! 41: wordsize=32
! 42: ;;
! 43: 8)
! 44: wordsize=64
! 45: dnl AC_CHECK_SIZEOF(long long)
! 46: dnl if [ $ac_cv_sizeof_long_long != 16 ]
! 47: dnl then
! 48: dnl try the whole thing with -mlonlong128
! 49: dnl complain about C compiler and OS vendor
! 50: dnl fi
! 51: ;;
! 52: esac
1.9 pazsan 53:
1.1 anton 54: #terminology is a bit unusual here: The host is the system on which
55: #gforth will run; the system on which configure will run is the `build'
56: AC_CANONICAL_HOST
57: case "$host_cpu" in
58: hppa*)
59: mach_h=hppa
1.3 pazsan 60: LIBOBJS="cache.o"
1.6 pazsan 61: LDFLAGS="-Xlinker -N"
62: LIBS="-L/lib/pa1.1/"
1.1 anton 63: ;;
64: sparc*)
65: mach_h=sparc
66: ;;
67: i386|i486|i586)
68: mach_h=386
1.9 pazsan 69: CFLAGS="-fforce-mem -fforce-addr -fomit-frame-pointer"
1.1 anton 70: #!! direct/indirect threading switch
71: #!! -m486 flag
72: ;;
73: m68*)
74: mach_h=m68k
75: ;;
76: mips*)
77: mach_h=mips
1.7 anton 78: #link text and data segment into the same 256M region!
79: GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000"
1.1 anton 80: ;;
1.9 pazsan 81: alpha*)
82: mach_h=alpha
83: echo Very Preliminary Support for Alpha!!!
84: ;;
1.1 anton 85: *)
86: echo "No direct threading support for $host_cpu, using indirect threading."
87: echo "Using a generic 32-bit machine description. It will only work if char * AND"
88: echo "long values have 32 bits."
89: echo "I'll assume that C floats and doubles are represented by IEEE single and"
90: echo "double numbers. If this is not so, SF@ etc. will not work correctly."
91: mach_h=32bit
92: esac
1.10 ! anton 93: AC_SUBST(host)
1.1 anton 94:
95: dnl Now a little support for DOS/DJGCC
96: AC_SUBST(MAKE_EXE)
97: MAKE_EXE=""
98:
99: dnl copy commands for systems that don't have links
1.6 pazsan 100: AC_SUBST(LINK_KERNL16L)
101: LINK_KERNL16L=""
102: AC_SUBST(LINK_KERNL16B)
103: LINK_KERNL16B=""
1.1 anton 104: AC_SUBST(LINK_KERNL32L)
105: LINK_KERNL32L=""
106: AC_SUBST(LINK_KERNL32B)
107: LINK_KERNL32B=""
1.6 pazsan 108: AC_SUBST(LINK_KERNL64L)
109: LINK_KERNL64L=""
110: AC_SUBST(LINK_KERNL64B)
111: LINK_KERNL64B=""
1.1 anton 112:
113: #if test $host_os=dos
114: #then
115: # echo Configuring for DOS!!!
116: # MAKE_EXE="coff2exe gforth"
117: # LINK_KERNL32L='$(CP) kernl32l.fi gforth.fi'
118: #fi
119:
120: dnl the following macro produces a warning with autoconf-2.1
121: AC_C_BIGENDIAN
1.4 pazsan 122: AC_SUBST(KERNAL)
1.1 anton 123: dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1
124: if test $ac_cv_c_bigendian = yes; then
125: bytesex=b
1.6 pazsan 126: KERNAL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
1.1 anton 127: else
128: bytesex=l
1.6 pazsan 129: KERNAL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
1.1 anton 130: fi
131:
132: dnl Checks for programs.
133: AC_PROG_LN_S
134: AC_PROG_INSTALL
135:
136: dnl Checks for library functions
1.2 anton 137: dnl This check is just for making later checks link with libm.
138: dnl using sin here is no good idea since it is built-into gcc and typechecked
139: AC_CHECK_LIB(m,asin)
1.1 anton 140: AC_FUNC_MEMCMP
141: AC_REPLACE_FUNCS(memmove strtoul)
1.8 anton 142: AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o")
1.1 anton 143: AC_SUBST(getopt_long)
1.5 anton 144: AC_CHECK_FUNCS(rint expm1 log1p pow10)
1.1 anton 145: AC_REPLACE_FUNCS(ecvt)
146: dnl No check for select, because our replacement is no good under
147: dnl anything but DOS
148:
1.9 pazsan 149: gforth_fi=kernl${wordsize}${bytesex}.fi
1.8 anton 150: AC_SUBST(gforth_fi)
151:
152: AC_LINK_FILES(${mach_h}.h $gforth_fi,machine.h gforth.fi)
1.1 anton 153: AC_OUTPUT(Makefile)
154:
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