config: FEDORA_COMPAT option (so far only tweaks uname)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 14 insertions, 1 deletions

diff --git a/Config.in b/Config.in
index acd3cb883..1bc214e44 100644
--- a/Config.in
+++ b/Config.in
@@ -37,6 +37,19 @@ config EXTRA_COMPAT
         some GNU extensions in libc. You probably only need this option
         if you plan to run busybox on desktop.
 
+config FEDORA_COMPAT
+        bool "Building for Fedora distribution"
+        default n
+        help
+        This option makes some tools behave like they do on Fedora.
+
+        At the time of this writing (2017-08) this only affects uname:
+        normally, uname -p (processor) and uname -i (platform)
+        are shown as "unknown", but with this option uname -p
+        shows the same string as uname -m (machine type),
+        and so does uname -i unless machine type is i486/i586/i686 -
+        then uname -i shows "i386".
+
 config INCLUDE_SUSv2
         bool "Enable obsolete features removed before SUSv3"
         default y
diff --git a/coreutils/uname.c b/coreutils/uname.c
index d6e447e33..be9a3f90d 100644
--- a/coreutils/uname.c
+++ b/coreutils/uname.c
@@ -183,7 +183,7 @@ int uname_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
                 strcpy(uname_info.processor, unknown_str);
                 strcpy(uname_info.platform, unknown_str);
                 strcpy(uname_info.os, CONFIG_UNAME_OSNAME);
-# if 0
+# if ENABLE_FEDORA_COMPAT
                 /* Fedora does something like this */
                 strcpy(uname_info.processor, uname_info.name.machine);
                 strcpy(uname_info.platform, uname_info.name.machine);