When using assembly code in your application or library, you usually have to specify the following armasm command-line options:
--apcs=/interworkThis instructs the assembler to set the build attributes in the object file to indicate that the code is ARM and Thumb interworking-safe.
--no_hide_allThis indicates that the assembler must use dynamic import and export for all global symbols.
ARM also recommended that you specify a CPU or architecture
with the --cpu option that at least conforms to ARM
Architecture v5TE (ARMv5TE), for ease of interoperation
with the GNU tools.
See also- Reference
Assembler Reference:
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