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Backport "gcc -print-sysroot" from 4.4.x, required by some tools
that auto-detect sysroot (e.g. libtool configured with --with-sysroot).
Source: http://gcc.gnu.org/viewcvs/trunk/gcc/gcc.c?r1=137548&r2=137584&view=patch
--- trunk/gcc/gcc.c 2008/07/07 00:48:55 137548
+++ trunk/gcc/gcc.c 2008/07/07 18:20:06 137584
@@ -155,6 +155,8 @@
static int print_multi_directory;
+static int print_sysroot;
+
/* Flag saying to print the relative path we'd use to
find OS libraries given the current compiler flags. */
@@ -1162,6 +1164,7 @@
{"--print-multi-directory", "-print-multi-directory", 0},
{"--print-multi-os-directory", "-print-multi-os-directory", 0},
{"--print-prog-name", "-print-prog-name=", "aj"},
+ {"--print-sysroot", "-print-sysroot", 0},
{"--print-sysroot-headers-suffix", "-print-sysroot-headers-suffix", 0},
{"--profile", "-p", 0},
{"--profile-blocks", "-a", 0},
@@ -3244,6 +3247,7 @@
-print-multi-lib Display the mapping between command line options and\n\
multiple library search directories\n"), stdout);
fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
+ fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
@@ -3686,6 +3690,8 @@
print_multi_lib = 1;
else if (! strcmp (argv[i], "-print-multi-directory"))
print_multi_directory = 1;
+ else if (! strcmp (argv[i], "-print-sysroot"))
+ print_sysroot = 1;
else if (! strcmp (argv[i], "-print-multi-os-directory"))
print_multi_os_directory = 1;
else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
@@ -4126,6 +4132,8 @@
;
else if (! strcmp (argv[i], "-print-multi-directory"))
;
+ else if (! strcmp (argv[i], "-print-sysroot"))
+ ;
else if (! strcmp (argv[i], "-print-multi-os-directory"))
;
else if (! strcmp (argv[i], "-print-sysroot-headers-suffix"))
@@ -6529,6 +6537,18 @@
return (0);
}
+ if (print_sysroot)
+ {
+ if (target_system_root)
+ {
+ if (target_sysroot_suffix)
+ printf ("%s%s\n", target_system_root, target_sysroot_suffix);
+ else
+ printf ("%s\n", target_system_root);
+ }
+ return (0);
+ }
+
if (print_multi_os_directory)
{
if (multilib_os_dir == NULL)
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