#include <sys/sysctl.h>
#include "xregex.h"
+static bool
+darwin_find_version_from_kernel (char *new_flag)
+{
+ char osversion[32];
+ size_t osversion_len = sizeof (osversion) - 1;
+ static int osversion_name[2] = { CTL_KERN, KERN_OSRELEASE };
+ int major_vers;
+ char minor_vers[6];
+ char * version_p;
+ char * version_pend;
+
+ /* Determine the version of the running OS. If we can't, warn user,
+ and do nothing. */
+ if (sysctl (osversion_name, ARRAY_SIZE (osversion_name), osversion,
+ &osversion_len, NULL, 0) == -1)
+ {
+ warning (0, "sysctl for kern.osversion failed: %m");
+ return false;
+ }
+
+ /* Try to parse the first two parts of the OS version number. Warn
+ user and return if it doesn't make sense. */
+ if (! ISDIGIT (osversion[0]))
+ goto parse_failed;
+ major_vers = osversion[0] - '0';
+ version_p = osversion + 1;
+ if (ISDIGIT (*version_p))
+ major_vers = major_vers * 10 + (*version_p++ - '0');
+ if (major_vers > 4 + 9)
+ goto parse_failed;
+ if (*version_p++ != '.')
+ goto parse_failed;
+ version_pend = strchr(version_p, '.');
+ if (!version_pend)
+ goto parse_failed;
+ if (! ISDIGIT (*version_p))
+ goto parse_failed;
+ strncpy(minor_vers, version_p, version_pend - version_p);
+ minor_vers[version_pend - version_p] = '\0';
+
+ /* The major kernel version number is 4 plus the second OS version
+ component. */
+ if (major_vers - 4 <= 4)
+ /* On 10.4 and earlier, the old linker is used which does not
+ support three-component system versions. */
+ sprintf (new_flag, "10.%d", major_vers - 4);
+ else
+ sprintf (new_flag, "10.%d.%s", major_vers - 4,
+ minor_vers);
+
+ return true;
+
+ parse_failed:
+ warning (0, "couldn%'t understand kern.osversion %q.*s",
+ (int) osversion_len, osversion);
+ return false;
+}
+
+#endif
+
/* When running on a Darwin system and using that system's headers and
libraries, default the -mmacosx-version-min flag to be the version
- of the system on which the compiler is running. */
+ of the system on which the compiler is running.
+
+ When building cross or native cross compilers, default to the OSX
+ version of the target (as provided by the most specific target header
+ included in tm.h). This may be overidden by setting the flag explicitly
+ (or by the MACOSX_DEPLOYMENT_TARGET environment). */
static void
darwin_default_min_version (unsigned int *decoded_options_count,
const unsigned int argc = *decoded_options_count;
struct cl_decoded_option *const argv = *decoded_options;
unsigned int i;
- char osversion[32];
- size_t osversion_len = sizeof (osversion) - 1;
- static int osversion_name[2] = { CTL_KERN, KERN_OSRELEASE };
- char * version_p;
- char * version_pend;
- int major_vers;
- char minor_vers[6];
static char new_flag[sizeof ("10.0.0") + 6];
/* If the command-line is empty, just return. */
}
}
- /* Determine the version of the running OS. If we can't, warn user,
- and do nothing. */
- if (sysctl (osversion_name, ARRAY_SIZE (osversion_name), osversion,
- &osversion_len, NULL, 0) == -1)
- {
- warning (0, "sysctl for kern.osversion failed: %m");
- return;
- }
+#ifndef CROSS_DIRECTORY_STRUCTURE
- /* Try to parse the first two parts of the OS version number. Warn
- user and return if it doesn't make sense. */
- if (! ISDIGIT (osversion[0]))
- goto parse_failed;
- major_vers = osversion[0] - '0';
- version_p = osversion + 1;
- if (ISDIGIT (*version_p))
- major_vers = major_vers * 10 + (*version_p++ - '0');
- if (major_vers > 4 + 9)
- goto parse_failed;
- if (*version_p++ != '.')
- goto parse_failed;
- version_pend = strchr(version_p, '.');
- if (!version_pend)
- goto parse_failed;
- if (! ISDIGIT (*version_p))
- goto parse_failed;
- strncpy(minor_vers, version_p, version_pend - version_p);
- minor_vers[version_pend - version_p] = '\0';
-
- /* The major kernel version number is 4 plus the second OS version
- component. */
- if (major_vers - 4 <= 4)
- /* On 10.4 and earlier, the old linker is used which does not
- support three-component system versions. */
- sprintf (new_flag, "10.%d", major_vers - 4);
- else
- sprintf (new_flag, "10.%d.%s", major_vers - 4,
- minor_vers);
+ /* Try to find the version from the kernel, if we fail - we print a message
+ and give up. */
+ if (!darwin_find_version_from_kernel (new_flag))
+ return;
+
+#else
+
+ /* For cross-compilers, default to the target OS version. */
+
+ strncpy (new_flag, DEF_MIN_OSX_VERSION, sizeof (new_flag));
+
+#endif /* CROSS_DIRECTORY_STRUCTURE */
/* Add the new flag. */
++*decoded_options_count;
(argc - 1) * sizeof (struct cl_decoded_option));
return;
- parse_failed:
- warning (0, "couldn%'t understand kern.osversion %q.*s",
- (int) osversion_len, osversion);
- return;
}
-#endif /* CROSS_DIRECTORY_STRUCTURE */
-
/* Translate -filelist and -framework options in *DECODED_OPTIONS
(size *DECODED_OPTIONS_COUNT) to use -Xlinker so that they are
considered to be linker inputs in the case that no other inputs are
}
}
-#ifndef CROSS_DIRECTORY_STRUCTURE
darwin_default_min_version (decoded_options_count, decoded_options);
-#endif
}
projects / platform / upstream / linaro-gcc.git / commitdiff