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Old 04-02-2011, 01:47 AM   #1
nwpuhlh
LQ Newbie
 
Registered: Apr 2010
Location: hangzhou, china
Distribution: Fedora 13
Posts: 9

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Angry Why GCC compiling went wrong? One step is btter than two steps?


Hi, when I was trying to compile a program to validate a SCEW lib, GCC prompted some strange errors... Could anyone pls give a quick shot? Thanks!

Compling&Linking in one command is OK, but after I separated it into two command it went wrong,,,

[root@fileserver2 common]# gcc scew_print.c -L ./scew -lscew -lexpat -I ./scew -o kkk
[root@fileserver2 common]# ./kkk
Usage: scew_print file.xml
[root@fileserver2 common]# gcc -I ./scew -c scew_print.c
[root@fileserver2 common]# gcc -L ./scew -lscew -lexpat -I ./scew -o kkk scew_print.o
scew_print.o: In function `print_attributes':
scew_print.c.text+0x43): undefined reference to `scew_element_attributes'
scew_print.c.text+0x53): undefined reference to `scew_list_data'
scew_print.c.text+0x61): undefined reference to `scew_attribute_value'
scew_print.c.text+0x6e): undefined reference to `scew_attribute_name'
scew_print.c.text+0x8d): undefined reference to `scew_list_next'
(rest of erro msg were deleted...)

PS: libscew.a is compiled by " ar -rc libscew.a $(OBJS)"...

Last edited by nwpuhlh; 04-02-2011 at 01:51 AM.
 
Old 04-02-2011, 02:00 AM   #2
nwpuhlh
LQ Newbie
 
Registered: Apr 2010
Location: hangzhou, china
Distribution: Fedora 13
Posts: 9

Original Poster
Rep: Reputation: 0
Question After change the parameters order, it works! why?

I just changed the order of parameters it works! Why?

[root@fileserver2 common]# gcc -o kkk scew_print.o -L ./scew -lscew -lexpat -I ./scew
[root@fileserver2 common]# ./kkk
Usage: scew_print file.xml
 
  


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