| Message ID | 20200415220032.140083-2-brandon.maier@rockwellcollins.com |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [1/2] toolchain/toolchain-wrapper: Handle debug info paths in gcc7 or below for reproducibility | expand |
diff --git a/toolchain/toolchain-wrapper.mk b/toolchain/toolchain-wrapper.mk index 7d55050135..291366b093 100644 --- a/toolchain/toolchain-wrapper.mk +++ b/toolchain/toolchain-wrapper.mk @@ -29,6 +29,9 @@ else TOOLCHAIN_WRAPPER_OPTS += -fdebug-prefix-map=$(BASE_DIR)=buildroot TOOLCHAIN_WRAPPER_OPTS += -D__FILE__=\"\" -D__BASE_FILE__=\"\" -Wno-builtin-macro-redefined endif +ifneq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_6),y) +TOOLCHAIN_WRAPPER_OPTS += -gno-record-gcc-switches +endif endif # We create a list like '"-mfoo", "-mbar", "-mbarfoo"' so that each flag is a
In GCC6 the compiler was made smarter to omit the flag -fdebug-prefix-map from the DWARF DW_AT_producer section[1]. That flag contains the absolute path '$(BASE_DIR)' which breaks reproducibility. Prior to GCC6 however, the only way to omit the flag is to use -gno-record-gcc-switches which omits all flags. [1] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=266cc0c181549c2fb6b50f8f26213cdc89101026 Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com> --- toolchain/toolchain-wrapper.mk | 3 +++ 1 file changed, 3 insertions(+)