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Merge branch 'master' into esp32_optimization

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This commit is contained in:
Joachim Burket
2020-06-30 11:41:08 +02:00
parent 58d3b77970 62d3b0d9b7
commit 23f3c0337b
160 changed files with 28 additions and 90 deletions
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esp32/doc/detailed_build_procedure.md
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@ -107,7 +107,7 @@ When the `cmake` command works, the following summary is given:
-- C/C++:
-- Built as dynamic libs?: NO
-- C++ standard: 11
-- C++ Compiler: /home/joachim/.espressif/tools/xtensa-esp32-elf/esp-2019r2-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++ (ver 8.2.0)
-- C++ Compiler: ~/.espressif/tools/xtensa-esp32-elf/esp-2019r2-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-g++ (ver 8.2.0)
-- C++ flags (Release): -mlongcalls -Wno-frame-address -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -mlongcalls -Wno-frame-address -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -fomit-frame-pointer -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /home/joachim/.espressif/tools/xtensa-esp32-elf/esp-2019r2-8.2.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc
@ -152,14 +152,14 @@ When the `cmake` command works, the following summary is given:
-- Other third-party libraries:
-- Custom HAL: NO
--
-- Python (for build): /home/joachim/.espressif/python_env/idf4.2_py2.7_env/bin/python2.7
-- Python (for build): ~/.espressif/python_env/idf4.2_py2.7_env/bin/python2.7
--
-- Install to: /home/joachim/Documents/HES/02_MSE/22_master_thesis/esp32-opencv/build/install
-- Install to: ~/esp32-opencv/build/install
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to: /home/joachim/Documents/HES/02_MSE/22_master_thesis/esp32-opencv/build
-- Build files have been written to: ~/esp32-opencv/build
```
@ -178,9 +178,9 @@ When the compilation has ended, the libs are in the `build/lib` folder.
## Modified files for OpenCV to compile and run:
To get the cmake configuration and make compilation to work, some modifications on OpenCV files had to be done. They are listed below.
To get the cmake configuration, make compilation and an ESP32 project compilation to work, some modifications on OpenCV files had to be done. They are listed below.
#### Configuration with CMake:
A `cmake` option `ESP32` is added to the `CmakeLists.txt` :
@ -223,6 +223,8 @@ The `cmake` command is run, leading to the following errors:
#### Compilation with Make:
After these fixes, the command `make` is run, with some new errors:
@ -232,58 +234,22 @@ After these fixes, the command `make` is run, with some new errors:
* When there is an `#if defined(ANDROID)`, add ` || defined(ESP32)` after, so that `malloc.h` is included and `memalign` is used
* *#error "<dirent.h> not supported"*
* *glob.cpp: #error "<dirent.h> not supported"*
The ESP32 doesn't support directories (which are emulated with the filenames, like `mydir/mysubdir/myfile.c`).
**FIX:** Modify `modules/core/src/glob.cpp`
* Add the following code after line 136:
```c++
#if defined(ESP32)
#include <sys/stat.h>
const char dir_separators[] = "/";
namespace {
struct dirent {
const char *d_name;
};
struct DIR {
dirent ent;
DIR() { }
~DIR()
{
if (ent.d_name)
delete[] ent.d_name;
}
};
DIR* opendir(const char* path)
{
DIR* dir = new DIR;
dir->ent.d_name = 0;
// TODO implement (point the first file starting with 'path' in its name)
return dir;
}
dirent* readdir(DIR* dir)
{
// TODO: implement (point to the next file with 'path' in its name)
return &(dir->ent);
}
void closedir(DIR* dir)
{
delete dir;
}
}
```
The function are not implemented yet. Must be implemented if files reading/writing in SPIFFS needed.
The `glob.cpp` file includes the file `xtensa-esp32-elf/sys-include/dirent.h`, which includes `xtensa-esp32-elf/sys-include/sys/dirent.h`, which causes this error. This is because the filesystem related functions are defined in the ESP-IDF repository (in `components/vfs/`). The `vfs/include/sys/dirent.h` header must therefore be included in `glob.cpp:135` instead of `<dirent.h>`:
``` c++
#if defined(ESP32)
#include <sys/unistd.h>
#include "esp_dirent.h"
#include <sys/stat.h>
const char dir_separators[] = "/";
#else
/* ... */
```
This `esp_dirent.h` file is the `vfs/include/sys/dirent.h` copied into `modules/core/src/` in OpenCV sources.
* *system.cpp:1002:20: error: 'mkstemp' was not declared in this scope*
**FIX:**
@ -328,6 +294,8 @@ After these fixes, the command `make` is run, with some new errors:
#### Compilation of a project on the ESP32:
When the `make` command compiles successfully, the library was tested with an example. This led to some new errors:
* *parallel.cpp:949:58: undefined reference to sysconf*