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initial check-in of mawk.ac.m4, aclocal.m4, configure
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,369 @@ | ||
| dnl | ||
| dnl custom mawk macros for autoconf | ||
| dnl | ||
| dnl @Log: mawk.ac.m4,v @ | ||
| dnl Revision 1.15 1996/09/04 23:40:34 mike | ||
| dnl Small tweak to strtod bug check | ||
| dnl | ||
| dnl Revision 1.14 1996/08/30 00:07:18 mike | ||
| dnl Modifications to the test and implementation of the bug fix for | ||
| dnl solaris overflow in strtod. | ||
| dnl | ||
| dnl Revision 1.13 1996/08/25 19:31:03 mike | ||
| dnl Added work-around for solaris strtod overflow bug. | ||
| dnl | ||
| dnl Revision 1.12 1996/01/18 11:51:36 mike | ||
| dnl 1.2.2 release | ||
| dnl | ||
| dnl Revision 1.11 1995/10/16 12:25:03 mike | ||
| dnl configure cleanup | ||
| dnl | ||
| dnl Revision 1.10 1995/04/20 20:26:54 mike | ||
| dnl beta improvements from Carl Mascott | ||
| dnl | ||
| dnl Revision 1.9 1994/12/18 20:46:23 mike | ||
| dnl fpe_check -> ./fpe_check | ||
| dnl | ||
| dnl Revision 1.8 1994/12/14 14:38:22 mike | ||
| dnl don't assume siginfo.h is inside signal.h | ||
| dnl | ||
| dnl Revision 1.7 1994/12/11 21:25:18 mike | ||
| dnl tweak XDEFINE | ||
| dnl | ||
| dnl Revision 1.6 1994/10/16 18:38:26 mike | ||
| dnl use sed on defines.out | ||
| dnl | ||
| dnl Revision 1.5 1994/10/11 02:49:08 mike | ||
| dnl systemVr4 siginfo | ||
| dnl | ||
| dnl Revision 1.4 1994/10/11 00:39:27 mike | ||
| dnl fpe check stuff | ||
| dnl | ||
| dnl | ||
| dnl ********** look for math library ***************** | ||
| dnl | ||
| define(MIKE, brennan@whidbey.com) | ||
| dnl | ||
| define(LOOK_FOR_MATH_LIBRARY,[ | ||
| if test "${MATHLIB+set}" != set ; then | ||
| AC_CHECK_LIB(m,log,[MATHLIB=-lm ; LIBS="$LIBS -lm"], | ||
| [# maybe don't need separate math library | ||
| AC_CHECK_FUNC(log, log=yes) | ||
| if test "$log$" = yes | ||
| then | ||
| MATHLIB='' # evidently don't need one | ||
| else | ||
| AC_MSG_ERROR( | ||
| Cannot find a math library. You need to set MATHLIB in config.user) | ||
| fi])dnl | ||
| fi | ||
| AC_SUBST(MATHLIB)])dnl | ||
| dnl | ||
| dnl ********* utility macros ********************** | ||
| dnl | ||
| dnl I can't get AC_DEFINE_NOQUOTE to work so give up | ||
| define([XDEFINE],[AC_DEFINE($1) | ||
| echo X '$1' 'ifelse($2,,1,$2)' >> defines.out])dnl | ||
| define([XXDEFINE], | ||
| [echo X '$1' '$2' >> defines.out])dnl | ||
| dnl | ||
| dnl | ||
| dnl We want #define NO_STRERROR | ||
| dnl instead of #define HAVE_STRERROR | ||
| dnl | ||
| dnl | ||
| define([XADD_NO],[NO_[$1]])dnl | ||
| define([ADD_NO], [XADD_NO(translit($1, a-z. , A-Z_))])dnl | ||
| define([HEADER_CHECK],[AC_CHECK_HEADER($1, ,XDEFINE(ADD_NO($1)))])dnl | ||
| define([FUNC_CHECK],[AC_CHECK_FUNC($1, ,XDEFINE(ADD_NO($1)))])dnl | ||
| dnl | ||
| dnl how to repeat a macro on a list of args | ||
| dnl (probably won't work if the args are expandable | ||
| dnl | ||
| define([REPEAT_IT], | ||
| [ifelse($#,1,[$1],$#,2,[$1($2)], | ||
| [$1($2) | ||
| REPEAT_IT([$1], | ||
| builtin(shift,builtin(shift,$*)))])])dnl | ||
|
|
||
| define([CHECK_HEADERS],[REPEAT_IT([HEADER_CHECK],$*)])dnl | ||
| define([CHECK_FUNCTIONS],[REPEAT_IT([FUNC_CHECK],$*)])dnl | ||
| dnl | ||
| dnl ******* find size_t ******************** | ||
| dnl | ||
| define([SIZE_T_CHECK],[ | ||
| [if test "$size_t_defed" != 1 ; then] | ||
| AC_CHECK_HEADER($1,size_t_header=ok) | ||
| [if test "$size_t_header" = ok ; then] | ||
| AC_TRY_COMPILE([ | ||
| #include <$1>], | ||
| [size_t *n ; | ||
| ], [size_t_defed=1; | ||
| XXDEFINE($2,1) | ||
| echo getting size_t from '<$1>']) | ||
| [fi;fi]])dnl | ||
| define(WHERE_SIZE_T, | ||
| [SIZE_T_CHECK(stddef.h,SIZE_T_STDDEF_H) | ||
| SIZE_T_CHECK(sys/types.h,SIZE_T_TYPES_H)])dnl | ||
| dnl | ||
| dnl ********** check compiler ****************** | ||
| dnl | ||
| define(COMPILER_ATTRIBUTES, | ||
| [AC_MSG_CHECKING(compiler supports void*) | ||
| AC_TRY_COMPILE( | ||
| [char *cp ; | ||
| void *foo() ;] , | ||
| [cp = (char*)(void*)(int*)foo() ;],void_star=yes,void_star=no) | ||
| AC_MSG_RESULT($void_star) | ||
| test "$void_star" = no && XXDEFINE(NO_VOID_STAR,1) | ||
| AC_MSG_CHECKING(compiler groks prototypes) | ||
| AC_TRY_COMPILE(,[int x(char*);],protos=yes,protos=no) | ||
| AC_MSG_RESULT([$protos]) | ||
| test "$protos" = no && XXDEFINE(NO_PROTOS,1) | ||
| AC_C_CONST | ||
| test "$ac_cv_c_const" = no && XXDEFINE(const)])dnl | ||
| dnl | ||
| dnl | ||
| dnl | ||
| dnl ********** which yacc *********** | ||
| define(WHICH_YACC, | ||
| [AC_CHECK_PROGS(YACC, byacc bison yacc) | ||
| test "$YACC" = bison && YACC='bison -y'])dnl | ||
| dnl | ||
| dnl ************* header and footer for config.h ******************* | ||
| dnl | ||
| define(CONFIG_H_HEADER, | ||
| [cat<<'EOF' | ||
| /* config.h -- generated by configure */ | ||
| #ifndef CONFIG_H | ||
| #define CONFIG_H | ||
| EOF])dnl | ||
| define(CONFIG_H_TRAILER, | ||
| [cat<<'EOF' | ||
| #define HAVE_REAL_PIPES 1 | ||
| #endif /* CONFIG_H */ | ||
| EOF])dnl | ||
| dnl | ||
| dnl ************* build config.h *********************** | ||
| define(DO_CONFIG_H, | ||
| [# output config.h | ||
| rm -f config.h | ||
| ( | ||
| CONFIG_H_HEADER | ||
| [sed 's/^X/#define/' defines.out] | ||
| CONFIG_H_TRAILER | ||
| ) | tee config.h | ||
| rm defines.out])dnl | ||
| dnl | ||
| dnl | ||
| dnl *************** [sf]printf checks needed for print.c *********** | ||
| dnl | ||
| dnl sometimes fprintf() and sprintf() are not proto'ed in | ||
| dnl stdio.h | ||
| define(FPRINTF_IN_STDIO, | ||
| [AC_EGREP_HEADER([[[^v]]fprintf],stdio.h,,XDEFINE(NO_FPRINTF_IN_STDIO)) | ||
| AC_EGREP_HEADER([[[^v]]sprintf],stdio.h,,XDEFINE(NO_SPRINTF_IN_STDIO))])dnl | ||
| dnl | ||
| dnl ************************************************** | ||
| dnl C program to compute MAX__INT and MAX__LONG | ||
| dnl if looking at headers fails | ||
| define([MAX__INT_PROGRAM], | ||
| [[#include <stdio.h> | ||
| int main() | ||
| { int y ; long yy ; | ||
| FILE *out ; | ||
| if ( !(out = fopen("maxint.out","w")) ) exit(1) ; | ||
| /* find max int and max long */ | ||
| y = 0x1000 ; | ||
| while ( y > 0 ) y *= 2 ; | ||
| fprintf(out,"X MAX__INT 0x%x\n", y-1) ; | ||
| yy = 0x1000 ; | ||
| while ( yy > 0 ) yy *= 2 ; | ||
| fprintf(out,"X MAX__LONG 0x%lx\n", yy-1) ; | ||
| exit(0) ; | ||
| return 0 ; | ||
| }]])dnl | ||
| dnl | ||
| dnl *** Try to find a definition of MAX__INT from limits.h else compute*** | ||
| dnl | ||
| define(FIND_OR_COMPUTE_MAX__INT, | ||
| [AC_CHECK_HEADER(limits.h,limits_h=yes) | ||
| if test "$limits_h" = yes ; then : | ||
| else | ||
| AC_CHECK_HEADER(values.h,values_h=yes) | ||
| if test "$values_h" = yes ; then | ||
| AC_TRY_RUN( | ||
| [#include <values.h> | ||
| #include <stdio.h> | ||
| int main() | ||
| { FILE *out = fopen("maxint.out", "w") ; | ||
| if ( ! out ) exit(1) ; | ||
| fprintf(out, "X MAX__INT 0x%x\n", MAXINT) ; | ||
| fprintf(out, "X MAX__LONG 0x%lx\n", MAXLONG) ; | ||
| exit(0) ; return(0) ; | ||
| } | ||
| ], maxint_set=1,[MAX_INT_ERRMSG]) | ||
| fi | ||
| if test "$maxint_set" != 1 ; then | ||
| # compute it -- assumes two's complement | ||
| AC_TRY_RUN(MAX__INT_PROGRAM,:,[MAX_INT_ERRMSG]) | ||
| fi | ||
| cat maxint.out >> defines.out ; rm -f maxint.out | ||
| fi ;])dnl | ||
| dnl | ||
| define(MAX_INT_ERRMSG, | ||
| [AC_MSG_ERROR(C program to compute maxint and maxlong failed. | ||
| Please send bug report to MIKE.)])dnl | ||
| dnl | ||
| dnl ********** input config.user ****************** | ||
| define(GET_USER_DEFAULTS, | ||
| [cat < /dev/null > defines.out | ||
| test -f config.user && . ./config.user | ||
| NOTSET_THEN_DEFAULT(BINDIR,/usr/local/bin) | ||
| NOTSET_THEN_DEFAULT(MANDIR,/usr/local/man/man1) | ||
| NOTSET_THEN_DEFAULT(MANEXT,1) | ||
| echo "$USER_DEFINES" >> defines.out]) | ||
| dnl | ||
| dnl ************************************************ | ||
| dnl | ||
| define([NOTSET_THEN_DEFAULT], | ||
| [test "[$]{$1+set}" = set || $1="$2" | ||
| AC_SUBST($1)])dnl | ||
| dnl | ||
| dnl ****************** sysV and solaris fpe checks *********** | ||
| dnl | ||
| define(LOOK_FOR_FPE_SIGINFO, | ||
| [AC_CHECK_FUNC(sigaction, sigaction=1) | ||
| AC_CHECK_HEADER(siginfo.h,siginfo_h=1) | ||
| if test "$sigaction" = 1 && test "$siginfo_h" = 1 ; then | ||
| XDEFINE(SV_SIGINFO) | ||
| else | ||
| AC_CHECK_FUNC(sigvec,sigvec=1) | ||
| if test "$sigvec" = 1 && ./fpe_check phoney_arg >> defines.out ; then : | ||
| else XDEFINE(NOINFO_SIGFPE) | ||
| fi | ||
| fi]) | ||
| dnl | ||
| dnl | ||
| dnl ******** AC_PROG_CC with defaultout -g to cflags ************** | ||
| dnl | ||
| AC_DEFUN([PROG_CC_NO_MINUS_G_NONSENSE], | ||
| [AC_BEFORE([$0], [AC_PROG_CPP])dnl | ||
| AC_CHECK_PROG(CC, gcc, gcc, cc) | ||
| dnl | ||
| AC_MSG_CHECKING(whether we are using GNU C) | ||
| AC_CACHE_VAL(ac_cv_prog_gcc, | ||
| [dnl The semicolon is to pacify NeXT's syntax-checking cpp. | ||
| cat > conftest.c <<EOF | ||
| #ifdef __GNUC__ | ||
| yes; | ||
| #endif | ||
| EOF | ||
| if ${CC-cc} -E conftest.c 2>&AC_FD_CC | egrep yes >/dev/null 2>&1; then | ||
| ac_cv_prog_gcc=yes | ||
| else | ||
| ac_cv_prog_gcc=no | ||
| fi])dnl | ||
| AC_MSG_RESULT($ac_cv_prog_gcc) | ||
| rm -f conftest* | ||
| ])dnl | ||
| dnl | ||
| dnl *********** dreaded fpe tests ************* | ||
| dnl | ||
| define(DREADED_FPE_TESTS, | ||
| [if echo "$USER_DEFINES" | grep FPE_TRAPS_ON >/dev/null | ||
| then echo skipping fpe tests based on '$'USER_DEFINES | ||
| else | ||
| AC_TYPE_SIGNAL | ||
| [ | ||
| echo checking handling of floating point exceptions | ||
| rm -f fpe_check | ||
| $CC $CFLAGS -DRETSIGTYPE=$ac_cv_type_signal -o fpe_check fpe_check.c $MATHLIB | ||
| if test -f fpe_check ; then | ||
| ./fpe_check 2>/dev/null | ||
| status=$? | ||
| else | ||
| echo fpe_check.c failed to compile 1>&2 | ||
| status=100 | ||
| fi | ||
| case $status in | ||
| 0) ;; # good news do nothing | ||
| 3) # reasonably good news] | ||
| XDEFINE(FPE_TRAPS_ON) | ||
| LOOK_FOR_FPE_SIGINFO ;; | ||
| 1|2|4) # bad news have to turn off traps | ||
| # only know how to do this on systemV and solaris | ||
| AC_CHECK_HEADER(ieeefp.h, ieeefp_h=1) | ||
| AC_CHECK_FUNC(fpsetmask, fpsetmask=1) | ||
| [if test "$ieeefp_h" = 1 && test "$fpsetmask" = 1 ; then] | ||
| XDEFINE(FPE_TRAPS_ON) | ||
| XDEFINE(USE_IEEEFP_H) | ||
| XXDEFINE([TURN_ON_FPE_TRAPS()], | ||
| [fpsetmask(fpgetmask()|FP_X_DZ|FP_X_OFL)]) | ||
| LOOK_FOR_FPE_SIGINFO | ||
| # look for strtod overflow bug | ||
| AC_MSG_CHECKING([strtod bug on overflow]) | ||
| rm -f fpe_check | ||
| $CC $CFLAGS -DRETSIGTYPE=$ac_cv_type_signal -DUSE_IEEEFP_H \ | ||
| -o fpe_check fpe_check.c $MATHLIB | ||
| if ./fpe_check phoney_arg phoney_arg 2>/dev/null | ||
| then | ||
| AC_MSG_RESULT([no bug]) | ||
| else | ||
| AC_MSG_RESULT([buggy -- will use work around]) | ||
| XXDEFINE([HAVE_STRTOD_OVF_BUG],1) | ||
| fi | ||
| else | ||
| [if test $status != 4 ; then] | ||
| XDEFINE(FPE_TRAPS_ON) | ||
| LOOK_FOR_FPE_SIGINFO | ||
| fi | ||
| [case $status in | ||
| 1) | ||
| cat 1>&2 <<'EOF' | ||
| Warning: Your system defaults generate floating point exception | ||
| on divide by zero but not on overflow. You need to | ||
| #define TURN_ON_FPE_TRAPS() to handle overflow. | ||
| Please report this so I can fix this script to do it automatically. | ||
| EOF | ||
| ;; | ||
| 2) | ||
| cat 1>&2 <<'EOF' | ||
| Warning: Your system defaults generate floating point exception | ||
| on overflow but not on divide by zero. You need to | ||
| #define TURN_ON_FPE_TRAPS() to handle divide by zero. | ||
| Please report this so I can fix this script to do it automatically. | ||
| EOF | ||
| ;; | ||
| 4) | ||
| cat 1>&2 <<'EOF' | ||
| Warning: Your system defaults do not generate floating point | ||
| exceptions, but your math library does not support this behavior. | ||
| You need to | ||
| #define TURN_ON_FPE_TRAPS() to use fp exceptions for consistency. | ||
| Please report this so I can fix this script to do it automatically. | ||
| EOF | ||
| ;; | ||
| esac] | ||
| echo MIKE | ||
| [echo You can continue with the build and the resulting mawk will be | ||
| echo useable, but getting FPE_TRAPS_ON correct eventually is best. | ||
| fi ;; | ||
| *) # some sort of disaster | ||
| cat 1>&2 <<'EOF' | ||
| The program `fpe_check' compiled from fpe_check.c seems to have | ||
| unexpectly blown up. Please report this to ]MIKE.[ | ||
| EOF | ||
| # quit or not ??? | ||
| ;; | ||
| esac | ||
| rm -f fpe_check # whew!!] | ||
| fi]) |
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