Strip the _UAPI prefix from header guards during header installation so that
any userspace dependencies aren't affected. glibc, for example, checks for
linux/types.h, linux/kernel.h, linux/compiler.h and linux/list.h by their
guards - though the last two aren't actually exported.
libtool: compile: gcc -std=gnu99 -DHAVE_CONFIG_H -I. -Wall -Werror -Wformat -Wformat-security -D_FORTIFY_SOURCE=2 -fno-delete-null-pointer-checks -fstack-protector -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -c child.c -fPIC -DPIC -o .libs/child.o
In file included from cli.c:20:0:
common.h:152:8: error: redefinition of 'struct sysinfo'
In file included from /usr/include/linux/kernel.h:4:0,
from /usr/include/linux/sysctl.h:25,
from /usr/include/sys/sysctl.h:43,
from common.h:50,
from cli.c:20:
/usr/include/linux/sysinfo.h:7:8: note: originally defined here
Reported-by: Tomasz Torcz <[email protected]>
Signed-off-by: David Howells <[email protected]>
Acked-by: Josh Boyer <[email protected]>
---
0 files changed
diff --git a/scripts/headers_install.pl b/scripts/headers_install.pl
index 239d22d..6c353ae 100644
--- a/scripts/headers_install.pl
+++ b/scripts/headers_install.pl
@@ -42,6 +42,9 @@ foreach my $filename (@files) {
$line =~ s/(^|\s)(inline)\b/$1__$2__/g;
$line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g;
$line =~ s/(^|\s|[(])(volatile)\b(\s|[(]|$)/$1__$2__$3/g;
+ $line =~ s/#ifndef _UAPI/#ifndef /;
+ $line =~ s/#define _UAPI/#define /;
+ $line =~ s!#endif /[*] _UAPI!#endif /* !;
printf {$out} "%s", $line;
}
close $out;
On Tue, Nov 13, 2012 at 9:26 AM, David Howells <[email protected]> wrote:
> Strip the _UAPI prefix from header guards during header installation so that
> any userspace dependencies aren't affected. glibc, for example, checks for
> linux/types.h, linux/kernel.h, linux/compiler.h and linux/list.h by their
> guards - though the last two aren't actually exported.
>
> libtool: compile: gcc -std=gnu99 -DHAVE_CONFIG_H -I. -Wall -Werror -Wformat -Wformat-security -D_FORTIFY_SOURCE=2 -fno-delete-null-pointer-checks -fstack-protector -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -c child.c -fPIC -DPIC -o .libs/child.o
> In file included from cli.c:20:0:
> common.h:152:8: error: redefinition of 'struct sysinfo'
> In file included from /usr/include/linux/kernel.h:4:0,
> from /usr/include/linux/sysctl.h:25,
> from /usr/include/sys/sysctl.h:43,
> from common.h:50,
> from cli.c:20:
> /usr/include/linux/sysinfo.h:7:8: note: originally defined here
>
> Reported-by: Tomasz Torcz <[email protected]>
> Signed-off-by: David Howells <[email protected]>
> Acked-by: Josh Boyer <[email protected]>
It would be good to get this patch into 3.7 so that the installed
headers aren't broken in subtle ways.
I've changed Linus' email address in the CC field because I'm fairly
sure he doesn't look at the osdl.org one any longer.
josh
> ---
>
> 0 files changed
>
> diff --git a/scripts/headers_install.pl b/scripts/headers_install.pl
> index 239d22d..6c353ae 100644
> --- a/scripts/headers_install.pl
> +++ b/scripts/headers_install.pl
> @@ -42,6 +42,9 @@ foreach my $filename (@files) {
> $line =~ s/(^|\s)(inline)\b/$1__$2__/g;
> $line =~ s/(^|\s)(asm)\b(\s|[(]|$)/$1__$2__$3/g;
> $line =~ s/(^|\s|[(])(volatile)\b(\s|[(]|$)/$1__$2__$3/g;
> + $line =~ s/#ifndef _UAPI/#ifndef /;
> + $line =~ s/#define _UAPI/#define /;
> + $line =~ s!#endif /[*] _UAPI!#endif /* !;
> printf {$out} "%s", $line;
> }
> close $out;
>
> --
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