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compiling and linking problems on 64-bit (casting & alignment)
- From: "Mitja Ursic" <mitja dot ursic at email dot si>
- To: gcc-help at gcc dot gnu dot org
- Date: Fri, 05 Oct 2007 14:43:33 +0200
- Subject: compiling and linking problems on 64-bit (casting & alignment)
Hello,
I have a problem when compiling and linking a program with several hundred C++
and FORTRAN files (not done by me:-). I am using GCC version 3.4.6. The
computer is 64 bit.
For compiling I am using:
C++: g++ -Dmacros -O -Wno-deprecated -I. Ipaths -c yy.cc
FORTRAN: g77 âDmacros -fno-underscoring -O -Wall -I. Ipaths -c xx.f
Linking is done with:
g++ aa.o bb.o cc.o -o dd.exe âLpath -llibs -lg2c -lstdc++ -lm
If I compiled as described I received âWarning: cast from pointer to integer of
different sizeâ, nevertheless linking was successful.
By using the switch âm32 in compiling process the warning was gone. But on the
other hand I received ÂWarning: alignment 8 of symbol `s1' in libCpp.a(xx.o) is
smaller than 16 in libFortran.a(YY.o)Â when I was linking (also with âm32).
Because it is important for me to trust the results I receive from a program I
have at least trust to the way I am performing compiling and linking (results
do depend on compiling and linking process in mine case).
Could anyone give me at least advice how to compile and link on 64-bit computer
without warnings I gave?
Best regards,
Mitja
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