Makefile: pass -undef option to cmd_gen_envp
Without the '-undef' option, the 'linux' string in .env files is
replaced with the string '1 '.
For example, in the board/armadeus/opos6uldev/opos6uldev.env file,
kernelimg=opos6ul-linux.bin
becomes
kernelimg=opos6ul-1 .bin
in the include/generated/env.in file.
That's because 'linux' is a System-specific Predefined Macros. [1]
Pass the '-undef' option to fix this issue.
[1] https://gcc.gnu.org/onlinedocs/gcc-13.2.0/cpp/System-specific-Predefined-Macros.html
Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/Makefile b/Makefile
index 2643d18..673290d 100644
--- a/Makefile
+++ b/Makefile
@@ -1821,7 +1821,8 @@
quiet_cmd_gen_envp = ENVP $@
cmd_gen_envp = \
if [ -s "$(ENV_FILE)" ]; then \
- $(CPP) -P $(CFLAGS) -x assembler-with-cpp -D__ASSEMBLY__ \
+ $(CPP) -P $(CFLAGS) -x assembler-with-cpp -undef \
+ -D__ASSEMBLY__ \
-D__UBOOT_CONFIG__ \
-I . -I include -I $(srctree)/include \
-include linux/kconfig.h -include include/config.h \