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From:	Allan <mu8ja0i AT earthlink DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	error compiling bc 1.06 with readline 6.1 and flex 2.54
Date:	Sat, 18 Dec 2010 13:18:07 -0600
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

I installed the new update to readline and decided to reinstall gmp 5.01
and bc 1.06. With both I specified "--with-readline" when configuring
the sources. The installation of gmp went fine but when I tried to
install bc I encountered a problem compiling. I set the environent
variables LEX to `/dev/env/DJDIR/bin/flex.exe' and LEXLIB to
`-lfl'. When I ran the configure script it finds libreadline. Then I run
`make timetest' to set the special system-optimized number and wait ten
minutes for it to finish.  But when I ran `make' to build the package I
received this error:
 ...(snip) 
Making all in bc make.exe[2]: Entering directory
`d:/djgpp/gnu/bc-1.06/bc' 
gcc -DHAVE_CONFIG_H -I. -I. -I.. -I. -I./../h -O2 -Wall -funsigned-char
-c 
ma in.c 
gcc -DHAVE_CONFIG_H -I. -I. -I.. -I. -I./../h -O2 -Wall -funsigned-char -c
bc .c flex -I8 scan.l && mv lex.yy.c scan.c 
gcc -DHAVE_CONFIG_H -I. -I. -I.. -I. -I./../h -O2 -Wall -funsigned-char
-c 
sc an.c
scan.l:146: error: conflicting types for 'readline'
d:/djgpp204/include/readline/readline.h:284: note: previous declaration
of 'read line' was here scan.l: In function 'yylex': scan.l:319:
warning: pointer targets in assignment differ in signedness scan.l:335:
warning: pointer targets in assignment differ in signedness scan.l:336:
warning: pointer targets in assignment differ in signedness make.exe[2]:
*** [scan.o] Error 1 make.exe[2]: Leaving directory
`d:/djgpp/gnu/bc-1.06/bc' 
make.exe[1]: *** [all-recursive] Error 1
make.exe[1]: Leaving directory `d:/djgpp/gnu/bc-1.06' make.exe: ***
[all-recursive-am] Error 2 
(snip)...  
I got it to build by manually editing bc\scan.l; just comment out the
(re)definition of the string pointer `readline'. I hope that the program
works properly after making this change. I know that the official port
of bc does not use readline and neither does the gmp port.
Thanks for the new port of readline.

-- 
Allan

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