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author | Iain Sandoe <iains@gcc.gnu.org> | 2011-09-08 07:28:11 +0000 |
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committer | Iain Sandoe <iains@gcc.gnu.org> | 2011-09-08 07:28:11 +0000 |
commit | 558c362ad07e050c56a3439a5c99ce8683c2e30a (patch) | |
tree | 06d697fa843ff19e4d248a5c918961536bab857e /gcc/config/darwin-driver.c | |
parent | 8c6a85e33bc6029579949a76acbb0590463d7c8b (diff) | |
download | gcc-558c362ad07e050c56a3439a5c99ce8683c2e30a.zip gcc-558c362ad07e050c56a3439a5c99ce8683c2e30a.tar.gz gcc-558c362ad07e050c56a3439a5c99ce8683c2e30a.tar.bz2 |
make darwin port a little more cross & cross native build friendly.
*config/darwin-driver.c (darwin_find_version_from_kernel): New routine
cut from ... (darwin_default_min_version): Amended to provide defaults
for the cross directory case.
(darwin_driver_init): call darwin_default_min_version unconditionally.
* config/darwin.h (DEF_MIN_OSX_VERSION): New.
* config/darwin9.h: Likewise.
* config/darwin10.h: Likewise.
* config/rs6000/darwin7.h: Likewise.
From-SVN: r178679
Diffstat (limited to 'gcc/config/darwin-driver.c')
-rw-r--r-- | gcc/config/darwin-driver.c | 132 |
1 files changed, 79 insertions, 53 deletions
diff --git a/gcc/config/darwin-driver.c b/gcc/config/darwin-driver.c index 08834da..48eaf19 100644 --- a/gcc/config/darwin-driver.c +++ b/gcc/config/darwin-driver.c @@ -29,9 +29,74 @@ along with GCC; see the file COPYING3. If not see #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, @@ -40,13 +105,6 @@ 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. */ @@ -82,44 +140,20 @@ darwin_default_min_version (unsigned int *decoded_options_count, } } - /* 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; @@ -132,14 +166,8 @@ darwin_default_min_version (unsigned int *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 @@ -192,7 +220,5 @@ darwin_driver_init (unsigned int *decoded_options_count, } } -#ifndef CROSS_DIRECTORY_STRUCTURE darwin_default_min_version (decoded_options_count, decoded_options); -#endif } |