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-rw-r--r--gcc/c-opts.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/gcc/c-opts.c b/gcc/c-opts.c
index 0b98308b12b..36f11f02288 100644
--- a/gcc/c-opts.c
+++ b/gcc/c-opts.c
@@ -1467,7 +1467,8 @@ c_common_finish ()
DEPS_TARGET", where OUTPUT_FILE is the file to write deps info to
and DEPS_TARGET is the target to mention in the deps. They also
result in dependency information being appended to the output file
- rather than overwriting it. */
+ rather than overwriting it, and like Sun's compiler
+ SUNPRO_DEPENDENCIES suppresses the dependency on the main file. */
static void
check_deps_environment_vars ()
{
@@ -1480,7 +1481,10 @@ check_deps_environment_vars ()
{
GET_ENVIRONMENT (spec, "SUNPRO_DEPENDENCIES");
if (spec)
- cpp_opts->deps.style = DEPS_SYSTEM;
+ {
+ cpp_opts->deps.style = DEPS_SYSTEM;
+ cpp_opts->deps.ignore_main_file = true;
+ }
}
if (spec)