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Makefile: pass -undef option to cmd_gen_envp

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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>
This commit is contained in:
Sébastien Szymanski 2024-02-23 12:42:06 +01:00 committed by Tom Rini
parent 1132471405
commit ff3bcb17f4
1 changed files with 2 additions and 1 deletions
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3
Makefile
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@ -1821,7 +1821,8 @@ ENV_FILE := $(if $(ENV_SOURCE_FILE),$(ENV_FILE_CFG),$(wildcard $(ENV_FILE_BOARD)
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 \