# DEPFILEs generation for GHS compiler
**URL:** https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601
**Category:** Usage
**Created:** [September 6, 2024, 6:34pm UTC](https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601 "2024-09-06T18:34:03Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@mykhayloscherbak](https://discourse.cmake.org/u/mykhayloscherbak)
#### Post date: [September 6, 2024, 6:34pm UTC](https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601/1 "2024-09-06T18:34:03Z")
Hi!
I’m trying to convert a makefile GHS project to a Cmake one and get issues with .h files dependencies. As far as I understand GHS(201355) does not support .d files generation. Existing makefile project uses gcc as a workaround to generate .d files. How can I do such a trick (or some other workaround) in Cmake? I do not want to add .h files manually.
BR,
Mike
---
### Author:  [@ClausKlein](https://discourse.cmake.org/u/ClausKlein)
#### Post date: [September 6, 2024, 7:31pm UTC](https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601/2 "2024-09-06T19:31:42Z")
### We used this workaround for ninja generator:
```cmake
# ---------------------------------------------------------------------------
# general user options for ninja and ghs compiler
# ---------------------------------------------------------------------------
option(CMAKE_C_DEPFILE_EXTENSION_REPLACE "name depend files as main.d instead of main.c.d" YES)
option(CMAKE_C_OUTPUT_EXTENSION_REPLACE "name object files as main.o instead of main.c.o" YES)
option(CMAKE_CXX_DEPFILE_EXTENSION_REPLACE "name depend files as main.d instead of main.cpp.d" YES)
option(CMAKE_CXX_OUTPUT_EXTENSION_REPLACE "name object files as main.o instead of main.cpp.o" YES)
option(CMAKE_DEPENDS_IN_PROJECT_ONLY "do not use system header files" YES)
if(CMAKE_DEPENDS_IN_PROJECT_ONLY)
set(CMAKE_DEPFILE_FLAGS_C "-MMD" CACHE STRING "dependency flag" FORCE)
set(CMAKE_DEPFILE_FLAGS_CXX "-MMD" CACHE STRING "dependency flag" FORCE)
else()
set(CMAKE_DEPFILE_FLAGS_C "-MD" CACHE STRING "dependency flag" FORCE)
set(CMAKE_DEPFILE_FLAGS_CXX "-MD" CACHE STRING "dependency flag" FORCE)
endif()
```
---
### Author:  [@marc.chevrier](https://discourse.cmake.org/u/marc.chevrier)
#### Post date: [September 6, 2024, 9:34pm UTC](https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601/3 "2024-09-06T21:34:10Z")
You can try to define variable `CMAKE__DEPENDS_EXTRA_COMMANDS` for the dependencies generation.
Take a look at the file `Compiler/CUDA.cmake` for a practical example.
---
### Author:  [@marc.chevrier](https://discourse.cmake.org/u/marc.chevrier)
#### Post date: [September 6, 2024, 9:35pm UTC](https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601/4 "2024-09-06T21:35:27Z")
This suggestion does not solve the problem exposed.
---
### Author:  [@ClausKlein](https://discourse.cmake.org/u/ClausKlein)
#### Post date: [September 7, 2024, 7:36am UTC](https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601/5 "2024-09-07T07:36:42Z")
May be, with our **GHS** compiler we had only the problem with the dependency file name generated : `file.c -> file.d` was generated from compiler and not used from `ninja`.
---
### Author:  [@mykhayloscherbak](https://discourse.cmake.org/u/mykhayloscherbak)
#### Post date: [October 8, 2024, 9:00am UTC](https://discourse.cmake.org/t/depfiles-generation-for-ghs-compiler/11601/6 "2024-10-08T09:00:01Z")
Thanks. This helped.