Suyu/AppImageKit-checkrt
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load exec() wrapper if optional runtimes are present

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This commit is contained in:
darealshinji 2017-12-06 14:37:47 +01:00
parent 2b645a7f55
commit bce42d0560
6 changed files with 367 additions and 18 deletions
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18
checkrt.c
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@ -41,10 +41,12 @@
ret = fscanf(f, "%s", sym); (void)ret; \
pclose(f);
#define CXXDIR "optional/libstdc++"
#define GCCDIR "optional/libgcc"
#define CXXDIR "optional/libstdc++"
#define GCCDIR "optional/libgcc"
#define EXEC_SO "optional/exec.so"
char optional[1024];
char *optional = NULL;
char *optional_ld_preload = NULL;
void checkrt(char *usr_in_appdir)
{
@ -92,6 +94,7 @@ void checkrt(char *usr_in_appdir)
int bundle_cxx = 0;
int bundle_gcc = 0;
size_t len = strlen(usr_in_appdir);
if (stdcxx_bundle_ver > stdcxx_sys_ver)
bundle_cxx = 1;
@ -99,13 +102,22 @@ void checkrt(char *usr_in_appdir)
if (gcc_bundle_ver > gcc_sys_ver)
bundle_gcc = 1;
if (bundle_cxx == 1 || bundle_gcc == 1) {
optional_ld_preload = malloc(strlen("LD_PRELOAD=") + strlen(EXEC_SO) + 1 + len);
sprintf(optional_ld_preload, "LD_PRELOAD=%s/" EXEC_SO, usr_in_appdir);
}
if (bundle_cxx == 1 && bundle_gcc == 0) {
optional = malloc(strlen(CXXDIR) + 2 + len);
sprintf(optional, "%s/" CXXDIR ":", usr_in_appdir);
} else if (bundle_cxx == 0 && bundle_gcc == 1) {
optional = malloc(strlen(GCCDIR) + 2 + len);
sprintf(optional, "%s/" GCCDIR ":", usr_in_appdir);
} else if (bundle_cxx == 1 && bundle_gcc == 1) {
optional = malloc(strlen(GCCDIR) + strlen(CXXDIR) + 4 + len*2);
sprintf(optional, "%s/" GCCDIR ":%s/" CXXDIR ":", usr_in_appdir, usr_in_appdir);
} else {
optional = malloc(2);
sprintf(optional, "%s", "");
}
}