Linking with GCC doesn't detect -fPIC flag
Clash Royale CLAN TAG#URR8PPP
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I am trying to link some files. Here is my command:
gcc -T linker.ld -o Stack Berry.bin -ffreestanding -O2 -nostlib kernel.o boot.o -fPIC -lgcc
How ever, I get this error:
/usr/bin/ld: boot.o: relocation R_X86_64_32 against `.multiboot' can not be used when making a PIE object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
I have included the -fPIC argument, have I just put it in the wrong place? I haven't been able to find any thing for the syntax for this flag. Thanks!
ld multiboot
asked 22 hours ago
Milo Banks
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Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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I am trying to link some files. Here is my command:
gcc -T linker.ld -o Stack Berry.bin -ffreestanding -O2 -nostlib kernel.o boot.o -fPIC -lgcc
How ever, I get this error:
/usr/bin/ld: boot.o: relocation R_X86_64_32 against `.multiboot' can not be used when making a PIE object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
I have included the -fPIC argument, have I just put it in the wrong place? I haven't been able to find any thing for the syntax for this flag. Thanks!
ld multiboot
asked 22 hours ago
Milo Banks
1
New contributor
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
The-fPICoption must be applied during the compile phase (the command that generates the object files) I think - rather than the link phase, as you are showing
– steeldriver
21 hours ago
faceplam. Thanks. Let me try it.
– Milo Banks
21 hours ago
It doesn't seem to work. I tried it on compiling the GAS code (not a arg), and the command that generates the object file. It does not seem to work.gcc -fPIC -c kernel.c -o kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra
– Milo Banks
21 hours ago
(1) My first guess (and it is only a guess) was that it’s a command-line order problem. Have you tried changing the order of the command line? (2) Actually reading the “recompile with -fPIC” error make me doubt my first guess and believe that @steeldriver has the right idea. … (Cont’d)
– Scott
20 hours ago
(Cont’d) … (3) People will say that this question is off-topic here, and belongs on Stack Overflow. I believe that it’s on-topic here, but I agree that it is likely to get answered more quickly and accurately on Stack Overflow. If you don’t get an answer here, and the question doesn’t get migrated, I suggest that you flag it and ask to have it moved. Please don’t just repost the question.
– Scott
20 hours ago
|
show 1 more comment
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I am trying to link some files. Here is my command:
gcc -T linker.ld -o Stack Berry.bin -ffreestanding -O2 -nostlib kernel.o boot.o -fPIC -lgcc
How ever, I get this error:
/usr/bin/ld: boot.o: relocation R_X86_64_32 against `.multiboot' can not be used when making a PIE object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
I have included the -fPIC argument, have I just put it in the wrong place? I haven't been able to find any thing for the syntax for this flag. Thanks!
ld multiboot
asked 22 hours ago
Milo Banks
1
New contributor
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I am trying to link some files. Here is my command:
gcc -T linker.ld -o Stack Berry.bin -ffreestanding -O2 -nostlib kernel.o boot.o -fPIC -lgcc
How ever, I get this error:
/usr/bin/ld: boot.o: relocation R_X86_64_32 against `.multiboot' can not be used when making a PIE object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
I have included the -fPIC argument, have I just put it in the wrong place? I haven't been able to find any thing for the syntax for this flag. Thanks!
ld multiboot
ld multiboot
asked 22 hours ago
Milo Banks
1
New contributor
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 hours ago
Milo Banks
1
New contributor
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 hours ago
Milo Banks
1
New contributor
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 hours ago
Milo Banks
1
asked 22 hours ago
Milo Banks
1
1
New contributor
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Milo Banks is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
The-fPICoption must be applied during the compile phase (the command that generates the object files) I think - rather than the link phase, as you are showing
– steeldriver
21 hours ago
faceplam. Thanks. Let me try it.
– Milo Banks
21 hours ago
It doesn't seem to work. I tried it on compiling the GAS code (not a arg), and the command that generates the object file. It does not seem to work.gcc -fPIC -c kernel.c -o kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra
– Milo Banks
21 hours ago
(1) My first guess (and it is only a guess) was that it’s a command-line order problem. Have you tried changing the order of the command line? (2) Actually reading the “recompile with -fPIC” error make me doubt my first guess and believe that @steeldriver has the right idea. … (Cont’d)
– Scott
20 hours ago
(Cont’d) … (3) People will say that this question is off-topic here, and belongs on Stack Overflow. I believe that it’s on-topic here, but I agree that it is likely to get answered more quickly and accurately on Stack Overflow. If you don’t get an answer here, and the question doesn’t get migrated, I suggest that you flag it and ask to have it moved. Please don’t just repost the question.
– Scott
20 hours ago
|
show 1 more comment
1
The-fPICoption must be applied during the compile phase (the command that generates the object files) I think - rather than the link phase, as you are showing
– steeldriver
21 hours ago
faceplam. Thanks. Let me try it.
– Milo Banks
21 hours ago
It doesn't seem to work. I tried it on compiling the GAS code (not a arg), and the command that generates the object file. It does not seem to work.gcc -fPIC -c kernel.c -o kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra
– Milo Banks
21 hours ago
(1) My first guess (and it is only a guess) was that it’s a command-line order problem. Have you tried changing the order of the command line? (2) Actually reading the “recompile with -fPIC” error make me doubt my first guess and believe that @steeldriver has the right idea. … (Cont’d)
– Scott
20 hours ago
(Cont’d) … (3) People will say that this question is off-topic here, and belongs on Stack Overflow. I believe that it’s on-topic here, but I agree that it is likely to get answered more quickly and accurately on Stack Overflow. If you don’t get an answer here, and the question doesn’t get migrated, I suggest that you flag it and ask to have it moved. Please don’t just repost the question.
– Scott
20 hours ago
1
1
The
-fPIC option must be applied during the compile phase (the command that generates the object files) I think - rather than the link phase, as you are showing– steeldriver
21 hours ago
The
-fPIC option must be applied during the compile phase (the command that generates the object files) I think - rather than the link phase, as you are showing– steeldriver
21 hours ago
faceplam. Thanks. Let me try it.
– Milo Banks
21 hours ago
faceplam. Thanks. Let me try it.
– Milo Banks
21 hours ago
It doesn't seem to work. I tried it on compiling the GAS code (not a arg), and the command that generates the object file. It does not seem to work.
gcc -fPIC -c kernel.c -o kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra– Milo Banks
21 hours ago
It doesn't seem to work. I tried it on compiling the GAS code (not a arg), and the command that generates the object file. It does not seem to work.
gcc -fPIC -c kernel.c -o kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra– Milo Banks
21 hours ago
(1) My first guess (and it is only a guess) was that it’s a command-line order problem. Have you tried changing the order of the command line? (2) Actually reading the “recompile with -fPIC” error make me doubt my first guess and believe that @steeldriver has the right idea. … (Cont’d)
– Scott
20 hours ago
(1) My first guess (and it is only a guess) was that it’s a command-line order problem. Have you tried changing the order of the command line? (2) Actually reading the “recompile with -fPIC” error make me doubt my first guess and believe that @steeldriver has the right idea. … (Cont’d)
– Scott
20 hours ago
(Cont’d) … (3) People will say that this question is off-topic here, and belongs on Stack Overflow. I believe that it’s on-topic here, but I agree that it is likely to get answered more quickly and accurately on Stack Overflow. If you don’t get an answer here, and the question doesn’t get migrated, I suggest that you flag it and ask to have it moved. Please don’t just repost the question.
– Scott
20 hours ago
(Cont’d) … (3) People will say that this question is off-topic here, and belongs on Stack Overflow. I believe that it’s on-topic here, but I agree that it is likely to get answered more quickly and accurately on Stack Overflow. If you don’t get an answer here, and the question doesn’t get migrated, I suggest that you flag it and ask to have it moved. Please don’t just repost the question.
– Scott
20 hours ago
|
show 1 more comment
1 Answer
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Your boot.o has a .multiboot elf section, which is incompatible with -fPIC. You can try to compile boot.o with -fPIC but that should fail.
See https://www.gnu.org/software/grub/manual/multiboot/multiboot.html#OS-image-format for the header.
On the other hand, there's little sense in creating a bootable object with -fPIC. Even if there was a "dynamic loader", there can't be anything to dynamically link against during the boot process.
answered 21 hours ago
V13
2,646613
I could only find info on the header and the flag value, and it matched up with my boot.s. BTW the boot.o is an object file, non-compilable, as it should be boot.s.
– Milo Banks
21 hours ago
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
Your boot.o has a .multiboot elf section, which is incompatible with -fPIC. You can try to compile boot.o with -fPIC but that should fail.
See https://www.gnu.org/software/grub/manual/multiboot/multiboot.html#OS-image-format for the header.
On the other hand, there's little sense in creating a bootable object with -fPIC. Even if there was a "dynamic loader", there can't be anything to dynamically link against during the boot process.
answered 21 hours ago
V13
2,646613
I could only find info on the header and the flag value, and it matched up with my boot.s. BTW the boot.o is an object file, non-compilable, as it should be boot.s.
– Milo Banks
21 hours ago
add a comment |
up vote
0
down vote
Your boot.o has a .multiboot elf section, which is incompatible with -fPIC. You can try to compile boot.o with -fPIC but that should fail.
See https://www.gnu.org/software/grub/manual/multiboot/multiboot.html#OS-image-format for the header.
On the other hand, there's little sense in creating a bootable object with -fPIC. Even if there was a "dynamic loader", there can't be anything to dynamically link against during the boot process.
answered 21 hours ago
V13
2,646613
I could only find info on the header and the flag value, and it matched up with my boot.s. BTW the boot.o is an object file, non-compilable, as it should be boot.s.
– Milo Banks
21 hours ago
add a comment |
up vote
0
down vote
up vote
0
down vote
Your boot.o has a .multiboot elf section, which is incompatible with -fPIC. You can try to compile boot.o with -fPIC but that should fail.
See https://www.gnu.org/software/grub/manual/multiboot/multiboot.html#OS-image-format for the header.
On the other hand, there's little sense in creating a bootable object with -fPIC. Even if there was a "dynamic loader", there can't be anything to dynamically link against during the boot process.
answered 21 hours ago
V13
2,646613
Your boot.o has a .multiboot elf section, which is incompatible with -fPIC. You can try to compile boot.o with -fPIC but that should fail.
See https://www.gnu.org/software/grub/manual/multiboot/multiboot.html#OS-image-format for the header.
On the other hand, there's little sense in creating a bootable object with -fPIC. Even if there was a "dynamic loader", there can't be anything to dynamically link against during the boot process.
answered 21 hours ago
V13
2,646613
answered 21 hours ago
V13
2,646613
answered 21 hours ago
V13
2,646613
answered 21 hours ago
V13
2,646613
2,646613
I could only find info on the header and the flag value, and it matched up with my boot.s. BTW the boot.o is an object file, non-compilable, as it should be boot.s.
– Milo Banks
21 hours ago
add a comment |
I could only find info on the header and the flag value, and it matched up with my boot.s. BTW the boot.o is an object file, non-compilable, as it should be boot.s.
– Milo Banks
21 hours ago
I could only find info on the header and the flag value, and it matched up with my boot.s. BTW the boot.o is an object file, non-compilable, as it should be boot.s.
– Milo Banks
21 hours ago
I could only find info on the header and the flag value, and it matched up with my boot.s. BTW the boot.o is an object file, non-compilable, as it should be boot.s.
– Milo Banks
21 hours ago
add a comment |
Milo Banks is a new contributor. Be nice, and check out our Code of Conduct.
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1
The
-fPICoption must be applied during the compile phase (the command that generates the object files) I think - rather than the link phase, as you are showing– steeldriver
21 hours ago
faceplam. Thanks. Let me try it.
– Milo Banks
21 hours ago
It doesn't seem to work. I tried it on compiling the GAS code (not a arg), and the command that generates the object file. It does not seem to work.
gcc -fPIC -c kernel.c -o kernel.o -std=gnu99 -ffreestanding -O2 -Wall -Wextra– Milo Banks
21 hours ago
(1) My first guess (and it is only a guess) was that it’s a command-line order problem. Have you tried changing the order of the command line? (2) Actually reading the “recompile with -fPIC” error make me doubt my first guess and believe that @steeldriver has the right idea. … (Cont’d)
– Scott
20 hours ago
(Cont’d) … (3) People will say that this question is off-topic here, and belongs on Stack Overflow. I believe that it’s on-topic here, but I agree that it is likely to get answered more quickly and accurately on Stack Overflow. If you don’t get an answer here, and the question doesn’t get migrated, I suggest that you flag it and ask to have it moved. Please don’t just repost the question.
– Scott
20 hours ago