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|
dnl--------------------------------------------------------------------
dnl
dnl Hugs98 interpreter configure script template.
dnl Process this file with autoreconf to produce a configure script.
dnl
dnl--------------------------------------------------------------------
AC_INIT([Hugs98], [1.0], [hugs-bugs@haskell.org], [hugs98])
AC_CONFIG_SRCDIR([src/hugs.c])
dnl We need 2.50 for AC_HELP_STRING.
AC_PREREQ([2.50])
AC_CONFIG_SUBDIRS([libraries])
AC_CONFIG_HEADER(src/config.h src/options.h)
AH_TOP([/* platform-specific defines */
#include "platform.h"])
dnl--------------------------------------------------------------------
dnl Choose host(/target/build) platform
dnl--------------------------------------------------------------------
dnl Guess host/target/build platform(s) if necessary.
AC_CANONICAL_TARGET
dnl ** GHC does further canonicalization
BuildPlatform=`./fp-platform $build`
HostPlatform=`./fp-platform $host`
TargetPlatform=`./fp-platform $target`
AC_SUBST([HostPlatform])
if test x"$HostPlatform" != x"$BuildPlatform" ; then
AC_MSG_ERROR([Hugs98 does not yet support differing build/host (i.e., cross-compiling)])
fi
fp_get_cpu='s/-.*//'
fp_get_os='s/^[[^-]]*-[[^-]]*-\([[^-]]*\).*/\1/'
build_cpu=`echo $BuildPlatform | sed "$fp_get_cpu"`
build_os=`echo $BuildPlatform | sed "$fp_get_os"`
host_cpu=`echo $HostPlatform | sed "$fp_get_cpu"`
host_os=`echo $HostPlatform | sed "$fp_get_os"`
target_cpu=`echo $TargetPlatform | sed "$fp_get_cpu"`
target_os=`echo $TargetPlatform | sed "$fp_get_os"`
# We don't use AS_TR_CPP here, because it changes case too.
fp_tr_cpp="sed s/[[^_a-zA-Z0-9]]/_/g"
AC_SUBST([BuildPlatform_CPP], [`echo $BuildPlatform | $fp_tr_cpp`])
AC_SUBST([HostPlatform_CPP], [`echo $HostPlatform | $fp_tr_cpp`])
AC_SUBST([TargetPlatform_CPP], [`echo $TargetPlatform | $fp_tr_cpp`])
AC_SUBST([BuildArch_CPP], [`echo $build_cpu | $fp_tr_cpp`])
AC_SUBST([HostArch_CPP], [`echo $host_cpu | $fp_tr_cpp`])
AC_SUBST([TargetArch_CPP], [`echo $target_cpu | $fp_tr_cpp`])
AC_SUBST([BuildOS_CPP], [`echo $build_os | $fp_tr_cpp`])
AC_SUBST([HostOS_CPP], [`echo $host_os | $fp_tr_cpp`])
AC_SUBST([TargetOS_CPP], [`echo $target_os | $fp_tr_cpp`])
dnl--------------------------------------------------------------------
dnl
dnl Check Configuration options
dnl
dnl--------------------------------------------------------------------
AC_ARG_ENABLE(path-canonicalization,
[AC_HELP_STRING([--enable-path-canonicalization],
[enable canonicalization of filenames])],
[if test "$enableval" = yes; then
AC_DEFINE([PATH_CANONICALIZATION], [1],
[Define to 1 if you want filenames to be converted to normal form
by: (a) replacing relative pathnames with absolute pathnames and
eliminating .. and . where possible. (b) converting to lower case
(only in case-insensitive filesystems)])
fi])
AC_ARG_ENABLE(timer,
[AC_HELP_STRING([--enable-timer],
[enable evaluation timing (for benchmarking Hugs)])])
AC_ARG_ENABLE(profiling,
[AC_HELP_STRING([--enable-profiling],
[enable heap profiler])],
[if test "$enableval" = yes; then
AC_DEFINE([PROFILING], [1],
[Define to 1 if heap profiling should be used.])
fi])
AC_ARG_ENABLE(stack-dumps,
[AC_HELP_STRING([--enable-stack-dumps],
[enable stack dump on stack overflow])],
[if test "$enableval" = yes; then
AC_DEFINE([GIMME_STACK_DUMPS], [1],
[If you get really desperate to understand why your Hugs programs
keep crashing or running out of stack, you might like to set this
flag and recompile Hugs. When you hit a stack error, it will print
out a list of all the objects currently under evaluation. The
information isn't perfect and can be pretty hard to understand but
it's better than a poke in the eye with a blunt stick. This is a
very experimental feature!])
fi])
AC_ARG_WITH(nmake,
[AC_HELP_STRING([--with-nmake],
[produce a Makefile compatible with nmake])],
[if test "$withval" = yes; then RM="del";CP="copy"; fi])
AC_ARG_ENABLE(large-banner,
[AC_HELP_STRING([--disable-large-banner],
[disable multiline startup banner])],
[if test "$enableval" = no; then
AC_DEFINE([SMALL_BANNER], [1],
[Define to 1 if you want the small startup banner.])
fi])
AC_ARG_WITH(gui,
[AC_HELP_STRING([--with-gui],
[build Hugs for Windows GUI (Borland C++ only)])])
AC_ARG_ENABLE(internal-prims,
[AC_HELP_STRING([--enable-internal-prims],
[experimental primitives to access Hugs's innards])],
[if test "$enableval" = yes; then
AC_DEFINE([INTERNAL_PRIMS], [1],
[Define to 1 if you want to use the primitives which let you examine
Hugs internals.])
AC_DEFINE([BYTECODE_PRIMS], [1],
[Define to 1 if you want to use the primitives which let you
examine Hugs bytecodes (requires INTERNAL_PRIMS).])
fi])
AC_ARG_ENABLE(debug,
[AC_HELP_STRING([--enable-debug],
[include C debugging information (for debugging Hugs)])],
[if test "$enableval" = yes; then
AC_DEFINE([DEBUG_CODE], [1],
[Define to 1 if debugging generated bytecodes or the bytecode
interpreter.])
AC_DEFINE([DEBUG_PRINTER], [1],
[Define if you want to use a low-level printer from within a
debugger.])
fi])
AC_ARG_ENABLE(tag-checks,
[AC_HELP_STRING([--enable-tag-checks],
[runtime tag checking (for debugging Hugs)])],
[if test "$enableval" = yes; then
AC_DEFINE([CHECK_TAGS], [1],
[Define to 1 if you want to perform runtime tag-checks as an
internal consistency check. This makes Hugs run very slowly - but is
very effective at detecting and locating subtle bugs.])
fi])
AC_ARG_ENABLE(lint,
[AC_HELP_STRING([--enable-lint],
[enable "lint" flags (for debugging Hugs)])])
AC_ARG_ENABLE(only98,
[AC_HELP_STRING([--enable-only98],
[build Hugs to understand Haskell 98 only])],
[if test "$enableval" = yes; then
AC_DEFINE([HASKELL_98_ONLY], [1],
[Define to 1 to omit Hugs extensions])
fi])
AC_ARG_WITH(pthreads,
[AC_HELP_STRING([--with-pthreads],
[build Hugs using POSIX threads C library])],
[if test "$withval" = yes; then
# needed with pthreads
AC_DEFINE([DONT_PANIC], [1],
[In a plain Hugs system, most signals (SIGBUS, SIGTERM, etc) indicate
some kind of error in Hugs - or maybe a stack overflow. Rather than
just crash, Hugs catches these errors and returns to the main loop.
It does this by calling a function "panic" which longjmp's back to
the main loop. If you're developing a foreign library, this may not
be the right behaviour - it's better if Hugs leaves them for your
debugger to catch rather than trapping them and "panicking".])
fi])
AC_ARG_ENABLE(ffi,
[AC_HELP_STRING([--enable-ffi],
[include modules that use the FFI [default=autodetect]])],
, [enable_ffi=autodetect])
AC_ARG_ENABLE(char-encoding,
[AC_HELP_STRING([--enable-char-encoding],
[encode all character I/O using the byte encoding determined by the
locale in effect at that time. To require that the UTF-8 encoding
is always used, give the --enable-char-encoding=utf8 option.
[default=autodetect]])],
, [enable_char_encoding=autodetect])
dnl--------------------------------------------------------------------
dnl
dnl Check for programs
dnl
dnl--------------------------------------------------------------------
dnl ToDo: if we have YACC, insert parser.c: parser.y in Makefile
AC_PROG_YACC
dnl To implement the Haskell layout rule of inserting an implicit close
dnl brace if it would be legal where an illegal token is encountered,
dnl parser.y does some error recovery trickery that is incompatible
dnl with byacc.
if test x"`basename ${YACC}`" = x"byacc"; then
AC_MSG_ERROR([Found 'byacc', but the Hugs98 parser is incompatible with it.
You need to install 'bison' and re-run the configure script.])
fi
: ${CFLAGS=-g}
OPTFLAGS="-O2"
AC_PROG_CC
AC_PROG_GCC_TRADITIONAL
if test "$with_pthreads" = yes; then
ACX_PTHREAD
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
LIBS="$PTHREAD_LIBS $LIBS"
CC="$PTHREAD_CC"
fi
dnl The following patch avoids the outburst of (benign) error messages during
dnl compilation of machine.c under MacOS X/Darwin, as well as some linker
dnl warnings caused by the default two-level namespace introduced in version 10.1
dnl
case $HostPlatform in
*-*-darwin*)
CFLAGS="$CFLAGS -no-cpp-precomp"
LDFLAGS="$LDFLAGS -flat_namespace"
;;
# As suggested by James B. White III (Trey) <whitejbiii@ornl.gov> (for
# AIX 4.3.3 & XL C 5.0.2 at least, may need to tweak the pattern match
# below some to avoid upsetting other AIX versions).
*-*-aix*)
optcflags="-qalloca"
CFLAGS_save="$CFLAGS"
CFLAGS="$CFLAGS $optcflags"
AC_MSG_CHECKING([whether $CC accepts $optcflags])
AC_LANG_C
AC_TRY_LINK([],[int main(){return(0);}],[optok=yes],[optok=no])
if test "$optok" = "yes"; then
# lump the recognition of -qalloca together with -qmaxmem=-1 and -bmaxdata..
CFLAGS="$CFLAGS_save $optcflags"
LDFLAGS="$LDFLAGS -bmaxdata:0x70000000";
OPTFLAGS="-O -qmaxmem=-1"
AC_MSG_RESULT([yes])
else
CFLAGS="$CFLAGS_save"
AC_MSG_RESULT([no])
fi
;;
esac
if test "x$CP" != "xcopy"; then
# Only check for RM&CP if they haven't been overridden already (cf. --with-nmake)
AC_PATH_PROG(RM,rm)
RM="$RM -f"
AC_PATH_PROG(CP,cp)
fi
AC_CHECK_PROG(LD,ld,ld)
AC_CHECK_PROGS(PERL,perl) dnl should test for perl5
AC_PROG_MAKE_SET
AC_CHECK_PROG(have_hp2ps,hp2ps,1,0)
if test "$have_hp2ps" = "1"; then
AC_DEFINE(HAVE_HP2PS,1,
[Define to 1 if heap profiler can (and should) automatically invoke
hp2ps to convert heap profile (in "profile.hp") to PostScript.])
fi
AC_CHECK_PROGS(DOCBOOK2HTML,[docbook2html db2html],[])
AC_CHECK_PROGS(DOCBOOK2DVI,[docbook2dvi db2dvi],[])
AC_CHECK_PROGS(DOCBOOK2PDF,[docbook2pdf db2pdf],[])
AC_CHECK_PROGS(DOCBOOK2PS,[docbook2ps db2ps],[])
dnl AC_PROG_INSTALL
dnl POSIX systems prefer "diff -C 1"; SunOS4 prefers "diff -c1".
AC_PROG_DIFF
dnl If you can run configure, you certainly have /bin/sh
AC_DEFINE(HAVE_BIN_SH, 1, [Define to 1 if you have /bin/sh])
dnl--------------------------------------------------------------------
dnl
dnl Check for libraries
dnl
dnl--------------------------------------------------------------------
AC_CHECK_LIB([dl], [dlopen])
AC_CHECK_LIB([dld], [shl_load])
AC_CHECK_LIB([m], [atan])
dnl--------------------------------------------------------------------
dnl
dnl Check for header files
dnl
dnl--------------------------------------------------------------------
AC_HEADER_STDC
dnl checks for sys/wait.h
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(stdarg.h stdlib.h unistd.h assert.h ctype.h string.h limits.h)
AC_CHECK_HEADERS(fcntl.h sgtty.h termio.h termios.h signal.h)
AC_CHECK_HEADERS(sys/types.h sys/stat.h sys/ioctl.h sys/resource.h sys/param.h)
AC_CHECK_HEADERS(console.h Files.h errno.h stat.h direct.h dirent.h)
AC_HEADER_TIME
AC_CHECK_HEADERS(time.h sys/time.h sys/timeb.h sys/times.h)
dnl One of these two is used to obtain floating point parameters
AC_CHECK_HEADERS(float.h values.h)
dnl DOS include files
AC_CHECK_HEADERS(dos.h conio.h io.h std.h)
dnl Windows include files
AC_CHECK_HEADERS(windows.h)
dnl dynamic loading include files
AC_CHECK_HEADERS([dlfcn.h dl.h mach-o/dyld.h], [break])
dnl Checks for:
dnl farcalloc (in bcc),
dnl valloc (in sunos, solaris, mips, amiga, next, minix, ultrix)
AC_CHECK_HEADER(alloc.h,[AC_CHECK_FUNCS(farcalloc)])
if test "${ac_cv_header_stdlib_h+set}" = set ||
test "${ac_cv_header_unistd_h+set}" = set; then
AC_CHECK_FUNCS(valloc)
fi
dnl--------------------------------------------------------------------
dnl Check for Unicode support, and select encoding
dnl--------------------------------------------------------------------
AC_CHECK_HEADERS(locale.h wchar.h)
if test "x$host_os" = "xmingw32"; then
wchar_t_is_unicode=yes # actually UTF-16
elif test "${ac_cv_header_wchar_h+set}" = set; then
AC_MSG_CHECKING([whether wchar_t is ISO 10646 (Unicode)])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#include <wchar.h>
#ifndef __STDC_ISO_10646__
# error __STDC_ISO_10646__ not defined
#endif]])],
[wchar_t_is_unicode=yes],
[wchar_t_is_unicode=no])
AC_MSG_RESULT([$wchar_t_is_unicode])
else
wchar_t_is_unicode=no
fi
AC_MSG_CHECKING([for locale-based character encoding])
if test "${ac_cv_header_locale_h+set}" = set &&
test "$wchar_t_is_unicode" = yes; then
locale_char_encoding=yes
else
locale_char_encoding=no
fi
AC_MSG_RESULT([$locale_char_encoding])
case $enable_char_encoding in
locale|yes)
if test "$locale_char_encoding" = yes; then
enable_char_encoding=locale
else
AC_MSG_ERROR([System does not support locale-based encoding of Unicode.])
enable_char_encoding=no
fi ;;
autodetect)
if test "$locale_char_encoding" = yes; then
enable_char_encoding=locale
fi ;;
esac
case $enable_char_encoding in
locale)
AC_DEFINE([CHAR_ENCODING_LOCALE], [1],
[Define to 1 to use a Char encoding determined by the locale.]) ;;
utf8)
AC_DEFINE([CHAR_ENCODING_UTF8], [1],
[Define to 1 to use the UTF-8 Char encoding.]) ;;
esac
AC_SEARCH_LIBS([wcrtomb], [msvcp60])
dnl--------------------------------------------------------------------
dnl
dnl Check for library functions.
dnl
dnl--------------------------------------------------------------------
FP_CHECK_FUNC([WinExec],
[@%:@include <windows.h>], [WinExec("",0)])
FP_CHECK_FUNC([GetModuleFileName],
[@%:@include <windows.h>], [GetModuleFileName((HMODULE)0,(LPTSTR)0,0)])
AC_CHECK_FUNCS([atan],
[AC_DEFINE([FLOATS_SUPPORTED], [1],
[Define to 1 if floating point arithmetic is supported.])])
AC_CHECK_FUNCS(strcasecmp _stricmp stricmp strcmpi)
AC_CHECK_FUNCS(strcmp)
AC_CHECK_FUNCS(rindex)
AC_CHECK_FUNCS(strrchr)
AC_CHECK_FUNCS(realpath _fullpath)
AC_CHECK_FUNCS(macsystem)
AC_CHECK_FUNCS(fseek ftell)
AC_CHECK_FUNCS(vsnprintf _vsnprintf)
AC_CHECK_FUNCS(snprintf _snprintf )
AC_CHECK_FUNCS(popen _popen )
AC_CHECK_FUNCS(pclose _pclose )
AC_CHECK_FUNCS(sigprocmask)
AC_CHECK_FUNCS(getrusage)
AC_CHECK_FUNCS(times)
AC_CHECK_FUNCS(isatty)
AC_CHECK_FUNCS(fstat)
AC_CHECK_FUNCS(select)
AC_CHECK_FUNCS(gettimeofday)
AC_CHECK_FUNCS(ftime)
AC_CHECK_FUNCS(time)
AC_CHECK_FUNCS(localtime)
AC_CHECK_FUNCS(gmtime)
AC_CHECK_FUNCS(mktime)
AC_CHECK_FUNCS(dup)
dnl--------------------------------------------------------------------
dnl
dnl Timezonery
dnl
dnl--------------------------------------------------------------------
AC_STRUCT_TIMEZONE
FP_DECL_TIMEZONE
dnl This always fails unless you also #include <windows.h>
dnl AC_CHECK_FUNCS(GetModuleFileName GetModuleFileNameA) dnl Windows
dnl Probably Macintosh specific
dnl AC_CHECK_FUNCS(getfinfo)
AC_FUNC_ALLOCA dnl Also sets STACK_DIRECTION
dnl Visual C++ doesn't have alloca, does have _alloca macro
AC_CACHE_CHECK(for _alloca, ac_cv_c__alloca,
[AC_TRY_LINK([
#include <malloc.h>
int test1() {
return _alloca(42);
}
],
[int i;],
ac_cv_c__alloca=yes,
ac_cv_c__alloca=no)])
if test "$ac_cv_c__alloca" = yes; then
AC_DEFINE(HAVE__ALLOCA, [1],
[Define to 1 if you have malloc.h and it defines _alloca - eg for Visual C++.])
fi
dnl Library functions used in C interface Foreign/test.ss (non-essential)
AC_CHECK_FUNCS(stime poly)
dnl--------------------------------------------------------------------
dnl
dnl Check for typedefs, structures, and compiler characteristics
dnl
dnl--------------------------------------------------------------------
AC_C_CONST dnl can we use "const"?
AC_C_PROTOTYPES dnl can we use function prototypes?
AC_C_JMPBUF_ARRAY dnl can we take address of jmpbufs?
AC_C_LABELS_AS_VALUES dnl can we use gcc's "labels as values" feature?
dnl AC_C_CHAR_UNSIGNED dnl We can test for signed/unsigned chars - but don't use it
AC_STRUCT_TM
dnl We don't test for this because Borland C uses a typedef to define size_t
dnl but puts it in stdio.h - this conflicts with defining it in config.h
dnl AC_TYPE_SIZE_T
dnl Foo: assumes we can use prototypes.
dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
dnl AC_CACHE_CHECK([type of signal handlers], ac_cv_type_signal_handler,
dnl [AC_TRY_COMPILE([#include <sys/types.h>
dnl #include <signal.h>
dnl #ifdef signal
dnl #undef signal
dnl #endif
dnl void (*signal (int, void (*)(int)))(int);
dnl ],
dnl [int i;],
dnl ac_cv_type_signal_handler=void_int,
dnl ac_cv_type_signal_handler=int_void)])
dnl if test "$ac_cv_type_signal_handler" = void_int; then
dnl AC_DEFINE(VOID_INT_SIGNALS)
dnl fi
dnl On BCC, signal handlers have type "int(void)", elsewhere its "void(int)".
AC_TYPE_SIGNAL
if test "$ac_cv_type_signal" = void; then
AC_DEFINE(VOID_INT_SIGNALS, [1],
[Define to 1 if signal handlers have type void (*)(int)
(Otherwise, they're assumed to have type int (*)(void).)])
fi
dnl--------------------------------------------------------------------
dnl
dnl Readline - based on the feature testing that the GHC configure
dnl script performs.
dnl
dnl--------------------------------------------------------------------
AC_CHECK_LIB(ncurses, tputs, HaveLibTermcap=YES; LibTermcap=ncurses,
AC_CHECK_LIB(termcap, tputs, HaveLibTermcap=YES; LibTermcap=termcap,
AC_CHECK_LIB(curses, tputs, HaveLibTermcap=YES; LibTermcap=curses,
HaveLibTermcap=NO)))
if test $HaveLibTermcap = YES ; then
LIBS="-l$LibTermcap $LIBS"
fi
AC_CHECK_LIB(readline, readline, HaveLibReadline=YES; LibReadline=readline,
AC_CHECK_LIB(editline, readline, HaveLibReadline=YES; LibReadline=editline,
HaveLibReadline=NO))
if test $HaveLibTermcap = YES && test $HaveLibReadline = YES &&
test "$enable_char_encoding" != utf8; then
LIBS="-l$LibReadline $LIBS"
AC_DEFINE([USE_READLINE], [1],
[Define to 1 if a command line editor is available and should be
used. There are two choices of command line editor that can be
used with Hugs: GNU readline and editline (from comp.sources.misc,
vol 31, issue 71)])
fi
dnl--------------------------------------------------------------------
dnl
dnl Profiling
dnl
dnl--------------------------------------------------------------------
if test "$enable_profiling" = yes; then
if test "$have_hp2ps" = "0"; then
AC_MSG_WARN(
[hp2ps (heap profile display program) not available
(not ignoring --enable-profiling)])
fi
fi
dnl--------------------------------------------------------------------
dnl
dnl Timer
dnl
dnl--------------------------------------------------------------------
want_timer=no
if test "$enable_timer" = yes; then
if test "$ac_cv_header_time_h" = yes; then
want_timer=yes
elif test "$ac_cv_header_sys_time_h" = yes &&
test "$ac_cv_header_sys_resource_h" = yes; then
want_timer=yes
else
AC_MSG_WARN(
[neither <time.h> nor (<sys/time.h> and <sys/resource.h>) is available
(ignoring --enable-timer)])
fi
fi
if test "$want_timer" = yes; then
AC_DEFINE([WANT_TIMER], [1],
[Define if you want to time every evaluation. Timing is included in
the Hugs distribution for the purpose of benchmarking the Hugs
interpreter, comparing its performance across a variety of different
machines, and with other systems for similar languages. It would be
somewhat foolish to try to use the timings produced in this way for
any other purpose. In particular, using timings to compare the
performance of different versions of an algorithm is likely to give
very misleading results. The current implementation of Hugs as an
interpreter, without any significant optimizations, means that there
are much more significant overheads than can be accounted for by
small variations in Hugs code.])
fi
dnl--------------------------------------------------------------------
dnl
dnl Debugging flags (assumed to be mutually exclusive with optimisation)
dnl
dnl--------------------------------------------------------------------
if test "$enable_debug" = yes; then
OPTFLAGS=""
else
CFLAGS="-DNDEBUG=1 $CFLAGS"
DEBUGFLAGS=""
LDDEBUGFLAGS=""
fi
AC_SUBST(OPTFLAGS)
AC_SUBST(DEBUGFLAGS)
AC_SUBST(LDDEBUGFLAGS)
dnl--------------------------------------------------------------------
dnl
dnl Figure out sizes of objects and decide which version of Hugs to build
dnl
dnl--------------------------------------------------------------------
AC_CHECK_SIZEOF(int,4)
AC_CHECK_SIZEOF(float,4)
AC_CHECK_SIZEOF(double,8)
AC_CHECK_SIZEOF(int*,4)
if test "$ac_cv_sizeof_int" -eq "2"; then
AC_DEFINE([SMALL_HUGS], [1],
[Define to 1 for 16 bit operation on a limited memory PC.])
else
dnl ToDo: test for virtual memory - if you have it, LARGE_HUGS is cool
dnl also: provide a way to override default
if test 0 -eq 1; then
echo "building regular hugs"
AC_DEFINE([REGULAR_HUGS], [1],
[Define to 1 for 32 bit operation using largish default table sizes.])
else
echo "building large hugs"
AC_DEFINE([LARGE_HUGS], [1],
[Define to 1 for 32 bit operation using larger default table sizes.])
fi
fi
dnl--------------------------------------------------------------------
dnl
dnl Figure out how to do dynamic linking.
dnl
dnl It is fairly easy to do the dynamic loading: that is fairly well
dnl documented and only depends on the host platform.
dnl
dnl It is also fairly easy to decide whether or not to add a leading
dnl underscore to symbol names when doing symbol lookup.
dnl
dnl But it is bloody hard to figure out how to _build_ a file which can be
dnl dynamically loaded because it varies with both the platform and the
dnl choice of linker. So we use a rather crude approach: we try every
dnl set of linking commands that anyone suggests will work.
dnl
dnl At the time of writing, I have no idea which of these tests will work.
dnl I don't want to add flags that are obviously silly but I want to
dnl record what is worth trying. So, for now, I'm going to leave all
dnl the untested ones commented out. As platforms are found which need
dnl those flags, we'll uncomment each line (and maybe even record which
dnl platforms those are).
dnl
dnl--------------------------------------------------------------------
dnl Try the MS Visual C flags
HUGS_TRY_DYNLINK([/LD])
HUGS_TRY_DYNLINK([/LD /ML /nologo])
dnl Try the win32 way
dnl gcc-mingw, gcc-cygwin don't want to be given -fPIC,
dnl but this test fouls up gcc-linux on some architectures.
case "$host_os" in
mingw32|cygwin32)
HUGS_TRY_DYNLINK([-shared]) ;;
esac
dnl Try the gcc flags
HUGS_TRY_DYNLINK([-shared -fPIC])
dnl Try the MacOS X flags
HUGS_TRY_DYNLINK([-flat_namespace -bundle -undefined suppress])
dnl Try the MacOS X flags
HUGS_TRY_DYNLINK([-bundle])
dnl Try the MacOS X flags
dnl HUGS_TRY_DYNLINK([-bundle -lc])
dnl Try the gcc flags
dnl HUGS_TRY_DYNLINK([-shared -nostdlib])
dnl Some other gcc flags
HUGS_TRY_DYNLINK(-r)
dnl Some other gcc flags
dnl HUGS_TRY_DYNLINK(-rdynamic)
dnl Try the SunOS flags
dnl HUGS_TRY_DYNLINK(-G)
dnl Try the HPUX flags
dnl HUGS_TRY_DYNLINK([-Aa +z])
AC_DEFINE_UNQUOTED(MKDLL_CMD,
["${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $ac_cv_dll_flags"],
[C compiler invocation use to build a dynamically loadable library.
Typical value: "gcc -shared". Must evaluate to a literal C string.])
if test "$ac_cv_leading_underscore" = "yes"; then
AC_DEFINE(LEADING_UNDERSCORE, [1],
[Define to 1 if your C compiler inserts underscores before symbol names.])
fi
dynamic_loading=no
FP_CHECK_FUNC([LoadLibrary],
[@%:@include <windows.h>], [LoadLibrary("")],
[dynamic_loading=yes],
[AC_CHECK_FUNCS([dlopen shl_load NSCreateObjectFileImageFromFile],
[dynamic_loading=yes; break])])
if test x"$enable_ffi" = xautodetect; then
enable_ffi="$dynamic_loading"
fi
if test x"$enable_ffi" = xyes; then
FFI_LIBRARIES=ffi_libraries
else
FFI_LIBRARIES=
fi
AC_SUBST([FFI_LIBRARIES])
dnl--------------------------------------------------------------------
dnl
dnl Lint flags
dnl (placed after DLL stuff, so not included in MKDLL_CMD)
dnl
dnl--------------------------------------------------------------------
dnl These flags are gcc specific.
dnl They detecting many common programming errors but can get fooled
dnl by perfectly safe code so we usually turn them off.
dnl We don't use -Wstrict-prototypes because some definitions in
dnl storage.h tickle this flag and can't be rewritten the 'correct' way
dnl without generating a warning/error from Microsoft's compiler.
GCC_LINT_FLAGS='-Wall -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Wno-parentheses'
if test "$enable_lint" = yes; then
case "$CC" in
gcc|gcc-*|*/gcc|*/gcc-*)
LINT_FLAGS="$GCC_LINT_FLAGS" ;;
# bcc32)
# LINT_FLAGS="$BCC32_LINT_FLAGS" ;;
*)
AC_MSG_WARN(dnl
[lint flags only defined for gcc (at present)
(ignoring --enable-lint)]) ;;
esac
CFLAGS="$CFLAGS $LINT_FLAGS"
dnl AC_MSG_WARN(using lint $CFLAGS)
fi
dnl--------------------------------------------------------------------
dnl
dnl Architecture specific substitutions
dnl The default values can be overridden by environment variables when
dnl the configure script is called
dnl
dnl--------------------------------------------------------------------
dnl When building a Windows script, $host_os will be set to "mingw32".
if test "x$host_os" = "xmingw32"; then
BAT=.bat
DLL=".dll"
DLL_ENDING="-dll"
DEV_NULL="nul"
hugsdir_deflt='${libdir}/hugs'
HUGSPATH=".;{Hugs}\\\\packages\\\\*"
HUGSSUFFIXES=".hs;.lhs"
MkInstall="src/MkInstal.in"
elif test "x$host" = "xdos"; then
# Much the same as for Windows
BAT=.bat
DLL=".dll"
DLL_ENDING="-dll"
DEV_NULL="nul"
hugsdir_deflt='${libdir}\\hugs'
HUGSPATH=".;{Hugs}\\\\packages\\\\*"
HUGSSUFFIXES=".hs;.lhs"
MkInstall="src/MkNull.in"
else
BAT=
hugsdir_deflt='${libdir}/hugs'
HUGSPATH=".:{Home}/lib/hugs/packages/*:/usr/local/lib/hugs/packages/*:{Hugs}/packages/*:{Hugs}/libraries"
HUGSSUFFIXES=".hs:.lhs"
MkInstall="src/MkInstal.in"
fi
AC_SUBST(HUGSPATH)
AC_SUBST(HUGSSUFFIXES)
AC_DEFINE_UNQUOTED([HUGSSUFFIXES], ["$HUGSSUFFIXES"],
[The list of suffixes used by Haskell source files, separated either
by colons (Unix) or semicolons (Macintosh, Windows, DOS). This value
can be overridden using the -S flag.])
if test "x$prefix" = xNONE; then
prefix="$ac_default_prefix"
fi
AC_SUBST_DEF(hugsdir,"$hugsdir_deflt")
test "x$prefix" = xNONE && prefix=$ac_default_prefix
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
dnl This is the only way I could find to perform the substitutions
dnl in hugsdir. Sigh.
HUGSDIR=`sh -c "prefix=$prefix; exec_prefix=$exec_prefix; libdir=$libdir; datadir=$datadir; echo $hugsdir"`
AC_DEFINE_UNQUOTED([HUGSDIR], ["$HUGSDIR"],
[The directory name which is substituted for the string "{Hugs}" in a
path variable. This normally points to where the Hugs libraries are
installed - ie so that the file HUGSDIR/packages/base/Prelude.hs exists.
Typical values are: "/usr/local/lib/hugs", "/usr/homes/JFHaskell/hugs",
"../hugsdir". This value is ignored on Windows and old MacOS versions
since it is assumed that the binary is installed in HUGSDIR.
This value can be overridden using the environment variable HUGSDIR,
and you can always choose _not_ to use the {Hugs} variable.])
AC_SUBST(HUGSDIR)
BINDIR=`sh -c "prefix=$prefix; exec_prefix=$exec_prefix; echo $bindir"`
AC_SUBST(BINDIR)
AC_SUBST_DEF(DLL,".so")
AC_SUBST_DEF(DLL_ENDING,"-so")
AC_SUBST_DEF(DEV_NULL,"/dev/null")
AC_SUBST_DEF(RM,"/bin/rm -f")
AC_SUBST_DEF(CP,"/bin/cp")
AC_SUBST(BAT)
AC_SUBST_FILE(MkInstall)
MkDepend=src/MkDepend.in
AC_SUBST_FILE(MkDepend)
AC_DEFINE_UNQUOTED([HUGSPATH], ["${HUGSPATH}"],
[Define this as the default setting of HUGSPATH. Value may contain
string "{Hugs}" (for which we will substitute the value of HUGSDIR)
and should be either colon-separated (Unix) or semicolon-separated
(Macintosh, Windows, DOS). Escape characters in the path string are
interpreted according to normal Haskell conventions. This value can be
overridden from the command line by setting the HUGSFLAGS environment
variable or by storing an appropriate value for HUGSFLAGS in the
registry (Win32 only). In all cases, use a string of the form
-P"...".])
dnl--------------------------------------------------------------------
dnl
dnl Figure out whether we can build the GUI
dnl (done last because -W flags messes everything else up)
dnl
dnl--------------------------------------------------------------------
HUGS_FOR_WINDOWS=no
if test "x$with_gui" = xyes; then
if test "x$host_os" = "xmingw32"; then
LDFLAGS="$LDFLAGS -W"
WOBJECTS="win-text.obj"
STRIP="brc32 hugs32.rc hugs.exe -w32"
RC_FILES="hugs32.rc"
HUGS_FOR_WINDOWS=yes
elif test "x$host" = "xdos"; then
WOBJECTS="win-text.obj"
STRIP="brc hugs16.rc hugs.exe"
RC_FILES="hugs16.rc"
HUGS_FOR_WINDOWS=yes
else
AC_MSG_WARN(
[not building Hugs GUI because this isn't a DOS machine
])
fi
fi
if test $HUGS_FOR_WINDOWS = yes; then
AC_DEFINE([HUGS_FOR_WINDOWS], [1],
[Define to 1 if you want to use the "Hugs for Windows" GUI.
(Windows 3.1 and compatibles only)])
fi
AC_SUBST_DEF(WOBJECTS,"")
AC_SUBST_DEF(RC_FILES,"")
AC_SUBST_DEF(STRIP,"")
dnl--------------------------------------------------------------------
dnl
dnl Generate output files
dnl
dnl--------------------------------------------------------------------
TESTSCRIPT=""
if test -f tests/config.in ; then
TESTSCRIPT=tests/config
fi
MAKEFILES='src/Makefile docs/Makefile docs/users_guide/Makefile demos/Makefile'
AC_OUTPUT(MkDefs $MAKEFILES src/platform.h docs/hugs.1 $TESTSCRIPT)
echo ''
echo '************************************************'
echo '*** NOW DO: make ; make install'
echo '************************************************'
exit 0
dnl End of configure.ac
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