[PATCH] Suppress warnings from latest binutils

[Jan Kiszka]

From: Jan Kiszka <jan.k...@siemens.com>

We currently cannot resolve them better, also due to external
dependencies on gnu-efi (see [1]), and systemd-boot does the same.

[1] https://sourceforge.net/p/gnu-efi/mailman/message/37684742/

Reported-by: Tobias Schmidl <tobias...@siemens.com>
Signed-off-by: Jan Kiszka <jan.k...@siemens.com>
---
Makefile.am | 3 +++
configure.ac | 10 ++++++++++
2 files changed, 13 insertions(+)

diff --git a/Makefile.am b/Makefile.am
index 856908f..95b82df 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -228,6 +228,7 @@ efi_ldflags = \
-nostdlib \
-znocombreloc \
--warn-common \
+ $(LDFLAGS_NO_WARN_EXECSTACK) \
--no-undefined \
--fatal-warnings \
-L $(GNUEFI_LIB_DIR) \
@@ -240,6 +241,8 @@ else
# hence set subsystem 0xa (EFI application) and binary format.
objcopy_format = -O binary
efi_ldflags += --defsym=EFI_SUBSYSTEM=0xa
+# Also suppress RWX segment warnings until we have a better solution
+efi_ldflags += $(LDFLAGS_NO_WARN_RWX_SEGMENTS)
endif

efi_objects_pre1 = $(efi_sources:.c=.o)
diff --git a/configure.ac b/configure.ac
index d39b5fa..a6cf658 100644
--- a/configure.ac
+++ b/configure.ac
@@ -112,6 +112,16 @@ AX_CHECK_COMPILE_FLAG([-mgeneral-regs-only],
[CFLAGS_MGENERAL_REGS_ONLY=])
AC_SUBST([CFLAGS_MGENERAL_REGS_ONLY])

+AX_CHECK_LINK_FLAG([-Wl,--no-warn-rwx-segments],
+ [LDFLAGS_NO_WARN_RWX_SEGMENTS=--no-warn-rwx-segments],
+ [LDFLAGS_NO_WARN_RWX_SEGMENTS=])
+AC_SUBST([LDFLAGS_NO_WARN_RWX_SEGMENTS])
+
+AX_CHECK_LINK_FLAG([-Wl,--no-warn-execstack],
+ [LDFLAGS_NO_WARN_EXECSTACK=--no-warn-execstack],
+ [LDFLAGS_NO_WARN_EXECSTACK=])
+AC_SUBST([LDFLAGS_NO_WARN_EXECSTACK])
+
# Checks from autoscan:
AC_CHECK_FUNCS([getmntent])
AC_CHECK_FUNCS([memset])
--
2.35.3