Details
-
Bug
-
Resolution: Invalid
-
Not Evaluated
-
None
-
1.9.0
-
None
Description
When I use arm-gnu cross compiler with bare metal, I need to set linker and compiler option "-u _printf_float"
When I set
cpp.driverFlags:
[
"-specs=nano.specs",
"-u _printf_float",
"-u _scanf_float",
"-specs=nosys.specs",
"-specs=rdimon.specs",
"-mthumb",
"-mcpu=cortex-m4",
"-mfpu=fpv4-sp-d16",
"-mfloat-abi=hard",
"-g3",
"-mfpu=vfp",
]
I get compiler options
gcc.exe -g -O0 -Wall -Wextra "-specs=nano.specs" "-u _printf_float" "-u _scanf_float" "-specs=nosys.specs" "-specs=rdimon.specs" -mthumb "-mcpu=cortex-m4" "-mfpu=fpv4-sp-d16" "-mfloat-abi=hard" -g3 "-mfpu=vfp"
some options inside quotes. Here is very difficult to search errors. "-u" option have to be without quotes.
I have to split it into two parts.
cpp.driverFlags:
[
"-specs=nano.specs",
"-u", "_printf_float",
"-u", "_scanf_float",
"-specs=nosys.specs",
"-specs=rdimon.specs",
"-mthumb",
"-mcpu=cortex-m4",
"-mfpu=fpv4-sp-d16",
"-mfloat-abi=hard",
"-g3",
"-mfpu=vfp",
]
and result is
gcc.exe -g -O0 -Wall -Wextra "-specs=nano.specs" -u _printf_float -u _scanf_float "-specs=nosys.specs" "-specs=rdimon.specs" -mthumb "-mcpu=cortex-m4" "-mfpu=fpv4-sp-d16" "-mfloat-abi=hard" -g3 "-mfpu=vfp"
It is right. I searched this error 2 days...