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