#! /bin/sh # # If these # comments don't work, trim them. Don't worry about any other # shell scripts, Configure will trim # comments from them for you. # # (If you are trying to port this package to a machine without sh, # I would suggest you have a look at the prototypical config_h.SH file # and edit it to reflect your system. Some packages may include samples # of config.h for certain machines, so you might look for one of those.) # # Yes, you may rip this off to use in other distribution packages. This # script belongs to the public domain and cannot be copyrighted. # # (Note: this Configure script was generated automatically. 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Giving up." >&4 exit 1 fi fi fi fi nm_extract="$com" if $test -f /lib/syscalls.exp; then echo " " echo "Also extracting names from /lib/syscalls.exp for good ole AIX..." >&4 $sed -n 's/^\([^ ]*\)[ ]*syscall$/\1/p' /lib/syscalls.exp >>libc.list fi ;; esac $rm -f libnames libpath : is a C symbol defined? csym='tlook=$1; case "$3" in -v) tf=libc.tmp; tc=""; tdc="";; -a) tf=libc.tmp; tc="[0]"; tdc="[]";; *) tlook="^$1\$"; tf=libc.list; tc="()"; tdc="()";; esac; tx=yes; case "$reuseval-$4" in true-) ;; true-*) tx=no; eval "tval=\$$4"; case "$tval" in "") tx=yes;; esac;; esac; case "$tx" in yes) case "$runnm" in true) if $contains $tlook $tf >/dev/null 2>&1; then tval=true; else tval=false; fi;; *) echo "main() { extern short $1$tdc; printf(\"%hd\", $1$tc); }" > t.c; if $cc $ccflags $ldflags -o t t.c $libs >/dev/null 2>&1; then tval=true; else tval=false; fi; $rm -f t t.c;; esac;; *) case "$tval" in $define) tval=true;; *) tval=false;; esac;; esac; eval "$2=$tval"' : define an is-in-libc? function inlibc='echo " "; td=$define; tu=$undef; sym=$1; var=$2; eval "was=\$$2"; tx=yes; case "$reuseval$was" in true) ;; true*) tx=no;; esac; case "$tx" in yes) set $sym tres -f; eval $csym; case "$tres" in true) echo "$sym() found." >&4; case "$was" in $undef) . ./whoa; esac; eval "$var=\$td";; *) echo "$sym() NOT found." >&4; case "$was" in $define) . ./whoa; esac; eval "$var=\$tu";; esac;; *) case "$was" in $define) echo "$sym() found." >&4;; *) echo "$sym() NOT found." >&4;; esac;; esac' : determine filename position in cpp output echo " " echo "Computing filename position in cpp output for #include directives..." >&4 echo '#include ' > foo.c $cat >fieldn </dev/null | \ $grep '^[ ]*#.*stdio\.h' | \ while read cline; do pos=1 set \$cline while $test \$# -gt 0; do if $test -r \`echo \$1 | $tr -d '"'\`; then echo "\$pos" exit 0 fi shift pos=\`expr \$pos + 1\` done done EOF chmod +x fieldn fieldn=`./fieldn` $rm -f foo.c fieldn case $fieldn in '') pos='???';; 1) pos=first;; 2) pos=second;; 3) pos=third;; *) pos="${fieldn}th";; esac echo "Your cpp writes the filename in the $pos field of the line." : locate header file $cat >findhdr <" > foo\$\$.c $cppstdin $cppminus $cppflags < foo\$\$.c 2>/dev/null | \ $grep "^[ ]*#.*\$wanted" | \ while read cline; do name=\`echo \$cline | $awk "\$awkprg" | $tr -d '"'\` case "\$name" in */\$wanted) echo "\$name"; exit 0;; *) name='';; esac; done; $rm -f foo\$\$.c; case "\$name" in '') exit 1;; esac EOF chmod +x findhdr : access call always available on UNIX set access d_access eval $inlibc : locate the flags for 'access()' case "$d_access" in "$define") echo " " $cat >access.c <<'EOCP' #include #ifdef I_FCNTL #include #endif #ifdef I_SYS_FILE #include #endif #ifdef I_UNISTD #include #endif main() { exit(R_OK); } EOCP : check sys/file.h first, no particular reason here if $test `./findhdr sys/file.h` && \ $cc $cppflags -DI_SYS_FILE access.c -o access >/dev/null 2>&1 ; then h_sysfile=true; echo " defines the *_OK access constants." >&4 elif $test `./findhdr fcntl.h` && \ $cc $cppflags -DI_FCNTL access.c -o access >/dev/null 2>&1 ; then h_fcntl=true; echo " defines the *_OK access constants." >&4 elif $test `./findhdr unistd.h` && \ $cc $cppflags -DI_UNISTD access.c -o access >/dev/null 2>&1 ; then echo " defines the *_OK access constants." >&4 else echo "I can't find the four *_OK access constants--I'll use mine." >&4 fi ;; esac $rm -f access* : Look for GNU-cc style attribute checking echo " " echo "Checking whether your compiler can handle __attribute__ ..." >&4 $cat >attrib.c <<'EOCP' #include void croak (char* pat,...) __attribute__((format(printf,1,2),noreturn)); EOCP if $cc $ccflags -c attrib.c >attrib.out 2>&1 ; then if $contains 'warning' attrib.out >/dev/null 2>&1; then echo "Your C compiler doesn't fully support __attribute__." val="$undef" else echo "Your C compiler supports __attribute__." val="$define" fi else echo "Your C compiler doesn't seem to understand __attribute__ at all." val="$undef" fi set d_attribut eval $setvar $rm -f attrib* : check for const keyword echo " " echo 'Checking to see if your C compiler knows about "const"...' >&4 $cat >const.c <<'EOCP' typedef struct spug { int drokk; } spug; main() { const char *foo; const spug y; } EOCP if $cc -c $ccflags const.c >/dev/null 2>&1 ; then val="$define" echo "Yup, it does." else val="$undef" echo "Nope, it doesn't." fi set d_const eval $setvar : see how we invoke the C preprocessor $cat <testcpp.c #define ABC abc #define XYZ xyz ABC.XYZ /* comment */ EOT : if $test "X$cppfilecom" != "X" && \ $cppfilecom testcpp.c testcpp.out 2>/dev/null && \ $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "You used to use $cppfilecom so we'll use that again." elif echo 'Maybe "'$cc' -E -C" will work...' && \ $cc -E -C testcpp.c testcpp.out 2>/dev/null && \ $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "It works!" cppfilecom="$cc -E -C" elif echo 'Nope...maybe "'"$cc"' -P -C" will work...' && \ $cc -P -C testcpp.c testcpp.out 2>/dev/null && \ $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "Yup, that does." cppfilecom="$cc -P -C" elif echo 'No such luck, maybe "'"$cpp"' -C" will work...' && \ $cpp -C testcpp.c testcpp.out 2>/dev/null && \ $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "Yup, it does." cppfilecom="$cpp -C" else cppfilecom='' $cat <<'EOM' I can't find a C preprocessor that will preserve comments. Please name one. EOM fi : dflt="$cppfilecom" cont=true while $test "$cont" ; do echo " " rp="How should $package run your preprocessor preserving comments?" . ./myread cppfilecom="$ans" $cppfilecom testcpp.c >testcpp.out 2>&1 if $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "OK, that will do." cont='' else echo "Sorry, I can't get that to work." fi done : Now see if it ignores header files. cp testcpp.c testcpp.h $cppfilecom testcpp.h >testcpp.out 2>&1 if $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "Terrific; it processes .h files passed on the command line too." val="$undef" else echo "It ignores .h files on the command line; pity." val="$define" fi set d_cppignhdrs eval $setvar : Now see how to send stdin to it. echo " " cp testcpp.c testcpp.h $cppfilecom testcpp.out 2>&1 if $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "Great; and it will read stdin if passed no arguments." val="$define" cppstdinflags='' else $cppfilecom - testcpp.out 2>&1 if $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "Great; and it can read stdin by passing it '-'." val="$define" cppstdinflags='-' else $cat <testcpp.out 2>&1 if $contains 'abc.*xyz' testcpp.out >/dev/null 2>&1 && \ $contains comment testcpp.out >/dev/null 2>&1 then echo "Good; that works fine." val="$define" cppstdinflags="$ans" else echo "Sorry, I couldn't get that to work." fi fi done fi fi set d_cppcanstdin eval $setvar : cleanup cpp test files anyway $rm -f testcpp.* : see if we can have long filenames echo " " rmlist="$rmlist /tmp/cf$$" $test -d /tmp/cf$$ || mkdir /tmp/cf$$ first=123456789abcdef second=/tmp/cf$$/$first $rm -f $first $second if (echo hi >$first) 2>/dev/null; then if $test -f 123456789abcde; then echo 'You cannot have filenames longer than 14 characters. Sigh.' >&4 val="$undef" else if (echo hi >$second) 2>/dev/null; then if $test -f /tmp/cf$$/123456789abcde; then $cat <<'EOM' That's peculiar... You can have filenames longer than 14 characters, but only on some of the filesystems. Maybe you are using NFS. Anyway, to avoid problems I shall consider your system cannot support long filenames at all. EOM val="$undef" else echo 'You can have filenames longer than 14 characters.' >&4 val="$define" fi else $cat <<'EOM' How confusing! Some of your filesystems are sane enough to allow filenames longer than 14 characters but some others like /tmp can't even think about them. So, for now on, I shall assume your kernel does not allow them at all. EOM val="$undef" fi fi else $cat <<'EOM' You can't have filenames longer than 14 chars. You can't even think about them! EOM val="$undef" fi set d_flexfnam eval $setvar $rm -rf /tmp/cf$$ 123456789abcde* : see which of string.h or strings.h is needed echo " " strings=`./findhdr string.h` if $test "$strings" && $test -r "$strings"; then echo "Using instead of ." >&4 val="$define" else val="$undef" strings=`./findhdr strings.h` if $test "$strings" && $test -r "$strings"; then echo "Using instead of ." >&4 else echo "No string header found -- You'll surely have problems." >&4 fi fi set i_string eval $setvar case "$i_string" in "$undef") strings=`./findhdr strings.h`;; *) strings=`./findhdr string.h`;; esac : index or strchr echo " " if set index val -f; eval $csym; $val; then if set strchr val -f d_strchr; eval $csym; $val; then if $contains strchr "$strings" >/dev/null 2>&1 ; then val="$define" vali="$undef" echo "strchr() found." >&4 else val="$undef" vali="$define" echo "index() found." >&4 fi else val="$undef" vali="$define" echo "index() found." >&4 fi else if set strchr val -f d_strchr; eval $csym; $val; then val="$define" vali="$undef" echo "strchr() found." >&4 else echo "No index() or strchr() found!" >&4 val="$undef" vali="$undef" fi fi set d_strchr; eval $setvar val="$vali" set d_index; eval $setvar : see if link exists set link d_link eval $inlibc : Locate the flags for 'open()' echo " " $cat >open3.c <<'EOCP' #include #ifdef I_FCNTL #include #endif #ifdef I_SYS_FILE #include #endif main() { if(O_RDONLY); #ifdef O_TRUNC exit(0); #else exit(1); #endif } EOCP : check sys/file.h first to get FREAD on Sun if $test `./findhdr sys/file.h` && \ $cc $cppflags "-DI_SYS_FILE" open3.c -o open3 >/dev/null 2>&1 ; then h_sysfile=true; echo " defines the O_* constants..." >&4 if ./open3; then echo "and you have the 3 argument form of open()." >&4 val="$define" else echo "but not the 3 argument form of open(). Oh, well." >&4 val="$undef" fi elif $test `./findhdr fcntl.h` && \ $cc "-DI_FCNTL" open3.c -o open3 >/dev/null 2>&1 ; then h_fcntl=true; echo " defines the O_* constants..." >&4 if ./open3; then echo "and you have the 3 argument form of open()." >&4 val="$define" else echo "but not the 3 argument form of open(). Oh, well." >&4 val="$undef" fi else val="$undef" echo "I can't find the O_* constant definitions! You got problems." >&4 fi set d_open3 eval $setvar $rm -f open3* : see if strftime exists set strftime d_strftime eval $inlibc : see if strstr exists set strstr d_strstr eval $inlibc : see if symlink exists set symlink d_symlink eval $inlibc : check for volatile keyword echo " " echo 'Checking to see if your C compiler knows about "volatile"...' >&4 $cat >try.c <<'EOCP' main() { typedef struct _goo_struct goo_struct; goo_struct * volatile goo = ((goo_struct *)0); struct _goo_struct { long long_int; int reg_int; char char_var; }; typedef unsigned short foo_t; char *volatile foo; volatile int bar; volatile foo_t blech; foo = foo; } EOCP if $cc -c $ccflags try.c >/dev/null 2>&1 ; then val="$define" echo "Yup, it does." else val="$undef" echo "Nope, it doesn't." fi set d_volatile eval $setvar $rm -f try.* : preserve RCS keywords in files with variable substitution, grrr Id='$Id' : check for void type echo " " echo "Checking to see how well your C compiler groks the void type..." >&4 echo " " $cat >&4 <try.c <<'EOCP' #if TRY & 1 void sub() { #else sub() { #endif extern void moo(); /* function returning void */ void (*goo)(); /* ptr to func returning void */ #if TRY & 8 void *hue; /* generic ptr */ #endif #if TRY & 2 void (*foo[10])(); #endif #if TRY & 4 if(goo == moo) { exit(0); } #endif exit(0); } main() { sub(); } EOCP if $cc $ccflags -c -DTRY=$defvoidused try.c >.out 2>&1 ; then voidflags=$defvoidused echo "It appears to support void to the level $package wants ($defvoidused)." if $contains warning .out >/dev/null 2>&1; then echo "However, you might get some warnings that look like this:" $cat .out fi else echo "Hmm, your compiler has some difficulty with void. Checking further..." >&4 if $cc $ccflags -c -DTRY=1 try.c >/dev/null 2>&1; then echo "It supports 1..." if $cc $ccflags -c -DTRY=3 try.c >/dev/null 2>&1; then echo "It also supports 2..." if $cc $ccflags -c -DTRY=7 try.c >/dev/null 2>&1; then voidflags=7 echo "And it supports 4 but not 8 definitely." else echo "It doesn't support 4..." if $cc $ccflags -c -DTRY=11 try.c >/dev/null 2>&1; then voidflags=11 echo "But it supports 8." else voidflags=3 echo "Neither does it support 8." fi fi else echo "It does not support 2..." if $cc $ccflags -c -DTRY=13 try.c >/dev/null 2>&1; then voidflags=13 echo "But it supports 4 and 8." else if $cc $ccflags -c -DTRY=5 try.c >/dev/null 2>&1; then voidflags=5 echo "And it supports 4 but has not heard about 8." else echo "However it supports 8 but not 4." fi fi fi else echo "There is no support at all for void." voidflags=0 fi fi esac case "$voidflags" in "$defvoidused") ;; *) dflt="$voidflags"; rp="Your void support flags add up to what?" . ./myread voidflags="$ans" ;; esac $rm -f try.* .out : determine lexical analyser generator case "$lex" in '') dflt=lex;; *) dflt="$lex";; esac echo " " if $test -f "$flex"; then rp='Which lexical analyser generator (lex or flex) shall I use?' else rp='Which lexical analyser generator shall I use?' fi . ./myread lex="$ans" : if using lex this will normally be useless, but flex frequently takes args echo " " case "$lexflags" in '') dflt='none';; *) dflt="$lexflags";; esac rp="What flags should be given to $lex?" . ./myread case "$ans" in none) lexflags='';; *) lexflags="$ans";; esac : determine compiler compiler case "$yacc" in '') dflt=yacc;; *) dflt="$yacc";; esac echo " " comp='yacc' if $test -f "$byacc"; then dflt="$byacc" comp="byacc or $comp" fi if $test -f "$bison"; then comp="$comp or bison -y" fi rp="Which compiler compiler ($comp) shall I use?" . ./myread yacc="$ans" case "$yacc" in *bis*) case "$yacc" in *-y*) ;; *) yacc="$yacc -y" echo "(Adding -y option to bison to get yacc-compatible behaviour.)" ;; esac ;; esac : see if we need extra yacc flags dflt="$yaccflags" case "$dflt" in '') dflt=none;; esac $cat <&4 libyacc='' ;; *yacc) xxx=`./loc liby$_a x $libpth` case "$xxx" in x) echo "No yacc library found." >&4 libyacc='' ;; *) echo "yacc library found in $xxx." >&4 libyacc="$xxx" ;; esac ;; *bison*) echo "You are using bison, so I won't look for a yacc library." >&4 libyacc='' ;; *) echo "You don't seem to have yacc, so I won't look for the yacc library." >&4 libyacc='' ;; esac : find out how to generate dependencies echo " " echo "Checking how to generate makefile dependencies on your machine..." >&4 toplev=`cd ..;pwd` $cat >dep.c <<'EOCP' #include "dep.h" EOCP $cat >dep.h <<'EOCP' EOCP takeflags='flags="" case "$@" in *--*) for arg do shift case "$arg" in --) break;; *) flags="$flags $arg";; esac done;; esac' case "$mkdep" in '') ;; *) if test -x "$mkdep" && $mkdep dep.c >dep.out 2>/dev/null && $contains "dep$_o:.*dep\.h" dep.out >/dev/null 2>&1 then echo "$mkdep works." else mkdep= fi esac case "$mkdep" in '') $spitshell > ../mkdep </dev/null done exit 0 EOM mkdep=$toplev/mkdep chmod +x $mkdep $eunicefix $mkdep if $mkdep dep.c >dep.out 2>/dev/null && $contains "dep$_o:.*dep\.h" dep.out >/dev/null 2>&1 then echo "Looks like we can use $cpp -M." else mkdep= fi ;; esac case "$mkdep" in '') $spitshell > ../mkdep </dev/null done exit 0 EOM mkdep=$toplev/mkdep chmod +x $mkdep $eunicefix $mkdep if $mkdep dep.c >dep.out 2>/dev/null && $contains "dep$_o: dep.h" dep.out >/dev/null 2>&1 then echo "Looks like we can use $cc -MM." else mkdep= fi ;; esac case "$mkdep" in '') $spitshell >../mkdep </dev/null | \\ $sed -e '/^# *[0-9]/!d' \\ -e 's/^.*"\(.*\)".*\$/'\$filebase'$_o: \1/' \\ -e 's|: \./|: |' \\ -e 's|: *$|: '\$srcfile'|' | \\ $grep -v '^#' | $sort | $uniq done exit 0 EOS mkdep=$toplev/mkdep chmod +x $mkdep $eunicefix $mkdep if $mkdep dep.c >dep.out 2>/dev/null && $contains "dep$_o:.*dep\.h" dep.out >/dev/null 2>&1 then echo "A shell script using $cpp does the trick." else echo "$cpp doesn't seem to be any use at all." $spitshell >../mkdep </ d' \\ -e 's/:[^"]*"\([^"]*\)".*/: \1/' \\ -e "s/\\.c:/$_o:/p" > /tmp/mkdep\$\$ IFS=': ' while read file dep; do for dir in \$inc; do if $test -f "\$dir/\$dep"; then dep="\$dir/\$dep" break fi done echo "\$file: \$dep" | $sed -e 's,: \./,: ,' done dep.out 2>/dev/null && $contains "dep$_o:.*dep\.h" dep.out >/dev/null 2>&1 then cat << EOM I can use a script with grep instead, but it will make some incorrect dependencies, since it doesn't understand about conditional compilation. Moreover, some dependencies may be missing, because scanning won't be a recursive process. If you have a program which generates makefile dependencies, you may want to use it. If not, you can use the script and edit the Makefile by hand if you need to. EOM else mkdep= cat << EOM I can't seem to generate makefile dependencies at all! Perhaps you have a program that does? If you don't, you might look at the mkdep script to see if you can create one which works. EOM fi fi esac dflt="$mkdep" fn=f~/ rp="Name of program to make makefile dependencies?" . ./getfile mkdep="$ans" $rm -f dep.c dep.h dep$_o dep.out : Cruising for prototypes echo " " echo "Checking out function prototypes..." >&4 $cat >prototype.c <<'EOCP' main(int argc, char *argv[]) { exit(0);} EOCP if $cc $ccflags -c prototype.c >prototype.out 2>&1 ; then echo "Your C compiler appears to support function prototypes." val="$define" else echo "Your C compiler doesn't seem to understand function prototypes." val="$undef" fi set prototype eval $setvar $rm -f prototype* : see if signal is declared as pointer to function returning int or void echo " " xxx=`./findhdr signal.h` $test "$xxx" && $cppstdin $cppminus $cppflags < $xxx >$$.tmp 2>/dev/null if $contains 'int.*\*[ ]*signal' $$.tmp >/dev/null 2>&1 ; then echo "You have int (*signal())() instead of void." >&4 val="$undef" elif $contains 'void.*\*[ ]*signal' $$.tmp >/dev/null 2>&1 ; then echo "You have void (*signal())() instead of int." >&4 val="$define" elif $contains 'extern[ ]*[(\*]*signal' $$.tmp >/dev/null 2>&1 ; then echo "You have int (*signal())() instead of void." >&4 val="$undef" else case "$d_voidsig" in '') echo "I can't determine whether signal handler returns void or int..." >&4 dflt=void rp="What type does your signal handler return?" . ./myread case "$ans" in v*) val="$define";; *) val="$undef";; esac;; "$define") echo "As you already told me, signal handler returns void." >&4;; *) echo "As you already told me, signal handler returns int." >&4;; esac fi set d_voidsig eval $setvar case "$d_voidsig" in "$define") signal_t="void";; *) signal_t="int";; esac $rm -f $$.tmp : define an is-a-typedef? function typedef='type=$1; var=$2; def=$3; shift; shift; shift; inclist=$@; case "$inclist" in "") inclist="sys/types.h";; esac; eval "varval=\$$var"; case "$varval" in "") $rm -f temp.c; for inc in $inclist; do echo "#include <$inc>" >>temp.c; done; $cppstdin $cppflags $cppminus < temp.c >temp.E 2>/dev/null; if $contains $type temp.E >/dev/null 2>&1; then eval "$var=\$type"; else eval "$var=\$def"; fi; $rm -f temp.?;; *) eval "$var=\$varval";; esac' : see if time exists echo " " if set time val -f d_time; eval $csym; $val; then echo 'time() found.' >&4 val="$define" set time_t timetype long stdio.h sys/types.h eval $typedef dflt="$timetype" echo " " rp="What type is returned by time() on this system?" . ./myread timetype="$ans" else echo 'time() not found, hope that will do.' >&4 val="$undef" timetype='int'; fi set d_time eval $setvar : see if stdarg is available echo " " if $test `./findhdr stdarg.h`; then echo " found." >&4 valstd="$define" else echo " NOT found." >&4 valstd="$undef" fi : see if varags is available echo " " if $test `./findhdr varargs.h`; then echo " found." >&4 else echo " NOT found, but that's ok (I hope)." >&4 fi : set up the varargs testing programs $cat > varargs.c < #endif #ifdef I_VARARGS #include #endif #ifdef I_STDARG int f(char *p, ...) #else int f(va_alist) va_dcl #endif { va_list ap; #ifndef I_STDARG char *p; #endif #ifdef I_STDARG va_start(ap,p); #else va_start(ap); p = va_arg(ap, char *); #endif va_end(ap); } EOP $cat > varargs </dev/null 2>&1; then echo "true" else echo "false" fi $rm -f varargs$_o EOP chmod +x varargs : now check which varargs header should be included echo " " i_varhdr='' case "$valstd" in "$define") if `./varargs I_STDARG`; then val='stdarg.h' elif `./varargs I_VARARGS`; then val='varargs.h' fi ;; *) if `./varargs I_VARARGS`; then val='varargs.h' fi ;; esac case "$val" in '') echo "I could not find the definition for va_dcl... You have problems..." >&4 val="$undef"; set i_stdarg; eval $setvar val="$undef"; set i_varargs; eval $setvar ;; *) set i_varhdr eval $setvar case "$i_varhdr" in stdarg.h) val="$define"; set i_stdarg; eval $setvar val="$undef"; set i_varargs; eval $setvar ;; varargs.h) val="$undef"; set i_stdarg; eval $setvar val="$define"; set i_varargs; eval $setvar ;; esac echo "We'll include <$i_varhdr> to get va_dcl definition." >&4;; esac $rm -f varargs* : see if prototypes support variable argument declarations echo " " case "$prototype$i_stdarg" in $define$define) echo "It appears we'll be able to prototype varargs functions." >&4 val="$define" ;; *) echo "Too bad... 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