Upgrading v3.3 to v4.0 with PSRAM, app no longer fits in IRAM (IDFGH-3664) #5598
Description
We migrate a esp-idf 3.3 project with C and C++ to esp-idf 4.0 on a EPS-WROVER with external SPI RAM enable.
if the CONFIG_SPIRAM_CACHE_WORKAROUND is ennable the compilation failed whit this errors:
Checking Python dependencies...
Python requirements from C:\Users\Frederic\esp32\esp-idf\requirements.txt are satisfied.
Executing action: all (aliases: build)
Running ninja in directory c:\projets\iozebre\esp32\gateway\zesp\build
Executing "ninja all"...
[1/15] Performing build step for 'ulp_ulpInputs'
ninja: no work to do.
[2/8] cmd.exe /C "cd /D C:\Projets\IOZebre\esp32\gateway\zesp\build\esp-idf\partition_table && C:\Users\Frederic\esp3...s\cmake\3.13.4\bin\cmake.exe -E echo *******************************************************************************"
Partition table binary generated. Contents:
*******************************************************************************
# Espressif ESP32 Partition Table
# Name, Type, SubType, Offset, Size, Flags
nvs,data,nvs,0x9000,24K,
phy_init,data,phy,0xf000,4K,
factory,app,factory,0x10000,1792K,
storage,data,spiffs,0x3a0000,384K,
*******************************************************************************
[3/8] Performing build step for 'bootloader'
ninja: no work to do.
[4/6] Linking CXX executable my-app.elf
FAILED: my-app.elf
cmd.exe /C "cd . && C:\Users\Frederic\esp32\.espressif\tools\xtensa-esp32-elf\esp-2019r2-8.2.0\xtensa-esp32-elf\bin\xtensa-esp32-elf-g++.exe -mlongcalls -Wno-frame-address -nostdlib @CMakeFiles\my-app.elf.rsp -o my-app.elf && cd ."
c:/users/frederic/esp32/.espressif/tools/xtensa-esp32-elf/esp-2019r2-8.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: my-app.elf section `.iram0.text' will not fit in region `iram0_0_seg'
c:/users/frederic/esp32/.espressif/tools/xtensa-esp32-elf/esp-2019r2-8.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: IRAM0 segment data does not fit.
c:/users/frederic/esp32/.espressif/tools/xtensa-esp32-elf/esp-2019r2-8.2.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.2.0/../../../../xtensa-esp32-elf/bin/ld.exe: region `iram0_0_seg' overflowed by 6593 bytes
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
ninja failed with exit code 1