diff options
Diffstat (limited to 'gcc/config/darwin-driver.c')
| -rw-r--r-- | gcc/config/darwin-driver.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/gcc/config/darwin-driver.c b/gcc/config/darwin-driver.c index 3d85f29cb3d..b3577c416bc 100644 --- a/gcc/config/darwin-driver.c +++ b/gcc/config/darwin-driver.c @@ -210,6 +210,28 @@ darwin_default_min_version (void) return new_flag; } +/* See if we can find the sysroot from the SDKROOT environment variable. */ + +static const char * +maybe_get_sysroot_from_sdkroot () +{ + const char *maybe_sysroot = getenv ("SDKROOT"); + + /* We'll use the same rules as the clang driver, for compatibility. + 1) The path must be absolute + 2) Ignore "/", that is the default anyway and we do not want the + sysroot semantics to be applied to it. + 3) It must exist (actually, we'll check it's readable too). */ + + if (maybe_sysroot == NULL + || *maybe_sysroot != '/' + || strlen (maybe_sysroot) == 1 + || access (maybe_sysroot, R_OK) == -1) + return NULL; + + return xstrndup (maybe_sysroot, strlen (maybe_sysroot)); +} + /* 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 @@ -234,6 +256,7 @@ darwin_driver_init (unsigned int *decoded_options_count, bool appendM64 = false; const char *vers_string = NULL; bool seen_version_min = false; + bool seen_sysroot_p = false; for (i = 1; i < *decoded_options_count; i++) { @@ -314,6 +337,11 @@ darwin_driver_init (unsigned int *decoded_options_count, --*decoded_options_count; break; + case OPT__sysroot_: + case OPT_isysroot: + seen_sysroot_p = true; + break; + default: break; } @@ -375,6 +403,22 @@ darwin_driver_init (unsigned int *decoded_options_count, &(*decoded_options)[*decoded_options_count - 1]); } + if (! seen_sysroot_p) + { + /* We will pick up an SDKROOT if we didn't specify a sysroot and treat + it as overriding any configure-time --with-sysroot. */ + const char *sdkroot = maybe_get_sysroot_from_sdkroot (); + if (sdkroot) + { + ++*decoded_options_count; + *decoded_options = XRESIZEVEC (struct cl_decoded_option, + *decoded_options, + *decoded_options_count); + generate_option (OPT__sysroot_, sdkroot, 1, CL_DRIVER, + &(*decoded_options)[*decoded_options_count - 1]); + } + } + /* We will need to know the OS X version we're trying to build for here so that we can figure out the mechanism and source for the sysroot to be used. */ |