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Moving from manual Makefiles to Automake


From: Paulo Jorge Matos
Subject: Moving from manual Makefiles to Automake
Date: Wed, 9 Nov 2005 09:02:53 +0000

Hi all,

On a current C++ project I'm using Autoconf and Automake.
To solve the big subdir tree inside src I used VPATHs in my
Makefile.am, if there's another way please say so.
The current problem is due to the fact that using automake with bison
and flex is giving me headaches.
I have msat-parser.yy and msat-parser.ll which generate C++ code.
And in my Makefile.am I have:
AM_YFLAGS = -d
AM_LFLAGS = -i -Cfa -+ -o$(LEX_OUTPUT_ROOT).cc

BUILT_SOURCES = msat-parser.h
bin_PROGRAMS = test
test_SOURCES = msat-parser.yy msat-lexer.ll ...

While doing make I get:
bison -y  -d  parser/msat/msat-parser.yy
if test -f y.tab.h; then \
  to=`echo "msat-parser_H" | sed \
                -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
                -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`; \
  sed -e "/^#/!b" -e "s/Y_TAB_H/$to/g" -e "s|y\.tab\.h|msat-parser.h|" \
            y.tab.h >msat-parser.ht; \
  rm -f y.tab.h; \
  if cmp -s msat-parser.ht msat-parser.h; then \
    rm -f msat-parser.ht ;\
  else \
    mv msat-parser.ht msat-parser.h; \
  fi; \
fi
if test -f y.output; then \
  mv y.output msat-parser.output; \
fi
sed '/^#/ s|y\.tab\.c|msat-parser.cc|' y.tab.c >msat-parser.cct && mv
msat-parser.cct msat-parser.cc
rm -f y.tab.c
make  all-am
make[3]: Entering directory `/home/pocm/software/extsat/src'
make[3]: Warning: File `.deps/vbhimplvsids.Po' has modification time
2e+02 s in the future
if g++ -DHAVE_CONFIG_H -I. -I. -I..    -I./include -ansi -std=c++98
-pedantic -Wall -DBUILDDATE=`date +'%Y-%b-%d %R'` -g -O2 -MT
msat-parser.o -MD -MP -MF ".deps/msat-parser.Tpo" -c -o msat-parser.o
msat-parser.cc; \
then mv -f ".deps/msat-parser.Tpo" ".deps/msat-parser.Po"; else rm -f
".deps/msat-parser.Tpo"; exit 1; fi
g++: cannot specify -o with -c or -S and multiple compilations
make[3]: *** [msat-parser.o] Error 1

Does anyone know what the problem might be? Thanks a lot.

Cheers,
--
Paulo Jorge Matos - pocm at sat inesc-id pt
Web: http://sat.inesc-id.pt/~pocm
Computer and Software Engineering
INESC-ID - SAT Group




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