path: root/com32/elflink/ldlinux/readconfig.c
diff options
authorMatt Fleming <matt.fleming@intel.com>2012-12-04 21:17:47 +0000
committerMatt Fleming <matt.fleming@intel.com>2012-12-05 22:41:32 +0000
commite4b3ce2dd82ce2da85c37fd3f332ec2eb802b734 (patch)
tree8b98440a37716dab0bd4de8b87a3800e5a40b07b /com32/elflink/ldlinux/readconfig.c
parenta79ceb45909434d392aacbb92eb2dfa738479783 (diff)
Symbol export whitelist
Before modules were dynamically loaded the boundary between GPL and non-GPL code was implicit because of the separate link domains for each module. With dynamic modules we need an explicit whitelist of core symbols that non-GPL code can link against at runtime without needing to be re-licensed under the GPL. Mark such symbols with __export, so that it is explicitly clear which symbols in the core can be linked against by non-GPL code. Reduce the visibility of symbols in both the core and ldlinux.c32 with -fvisibility=hidden. __export changes the visibility to 'default'. Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'com32/elflink/ldlinux/readconfig.c')
1 files changed, 3 insertions, 2 deletions
diff --git a/com32/elflink/ldlinux/readconfig.c b/com32/elflink/ldlinux/readconfig.c
index 7411fcaf..6a419c6d 100644
--- a/com32/elflink/ldlinux/readconfig.c
+++ b/com32/elflink/ldlinux/readconfig.c
@@ -82,10 +82,11 @@ short vkernel = 0; //have we seen any "label" statements?
short displaycon = 1; //conio.inc
extern short NoHalt; //idle.c
-const char *default_cmd = NULL; //"default" command line
const char *onerror = NULL; //"onerror" command line
const char *ontimeout = NULL; //"ontimeout" command line
+__export const char *default_cmd = NULL; //"default" command line
/* Empty refstring */
const char *empty_string;
@@ -599,7 +600,7 @@ uint32_t parse_argb(char **p)
//static const char *append = NULL;
extern const char *append;
//static unsigned int ipappend = 0;
-unsigned int ipappend = 0;
+__export unsigned int ipappend = 0;
extern uint16_t PXERetry;
static struct labeldata ld;