CMake IA64 FPIC problem: Difference between revisions
From KitwarePublic
Jump to navigationJump to search
No edit summary |
(Add explicit preformat markup) |
||
| Line 1: | Line 1: | ||
bar.c: | bar.c: | ||
<pre> | |||
int i = 0; | int i = 0; | ||
void bar() | void bar() | ||
| Line 5: | Line 6: | ||
i = 5; | i = 5; | ||
} | } | ||
</pre> | |||
foo.c: | foo.c: | ||
<pre> | |||
extern void bar(); | extern void bar(); | ||
void foo() | void foo() | ||
| Line 12: | Line 15: | ||
bar(); | bar(); | ||
} | } | ||
</pre> | |||
Compiled with | Compiled with | ||
<pre> | |||
rm -f libbar.a *.o | rm -f libbar.a *.o | ||
gcc -c bar.c | gcc -c bar.c | ||
| Line 20: | Line 25: | ||
gcc -c foo.c | gcc -c foo.c | ||
gcc -shared -o libfoo.so foo.o -L. -lbar | gcc -shared -o libfoo.so foo.o -L. -lbar | ||
</pre> | |||
Will fail: | Will fail: | ||
<pre> | |||
/usr/bin/ld: bar.o: @gprel relocation against dynamic symbol i collect2: ld returned 1 exit status | /usr/bin/ld: bar.o: @gprel relocation against dynamic symbol i collect2: ld returned 1 exit status | ||
</pre> | |||
But, putting: | But, putting: | ||
<pre> | |||
gcc -fPIC -c bar.c | gcc -fPIC -c bar.c | ||
</pre> | |||
works. | works. | ||
{{CMake/Template/Footer}} | {{CMake/Template/Footer}} | ||
Revision as of 18:04, 20 April 2018
bar.c:
int i = 0;
void bar()
{
i = 5;
}
foo.c:
extern void bar();
void foo()
{
bar();
}
Compiled with
rm -f libbar.a *.o gcc -c bar.c ar cr libbar.a bar.o gcc -c foo.c gcc -shared -o libfoo.so foo.o -L. -lbar
Will fail:
/usr/bin/ld: bar.o: @gprel relocation against dynamic symbol i collect2: ld returned 1 exit status
But, putting:
gcc -fPIC -c bar.c
works.
