multiple definition of `__adddf3' when removing clib and adding CONFIG_BT_ENABLE

[PocketPi]

I tried to integrate a rust module in my c based project based on this example.

I got a whole lot of multiple definition errors in low level function calls.:

[100%] Linking CXX executable esp32-hello-rust.elf
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__adddf3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__adddf3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_addsubdf3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:100: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__floatunsidf':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__floatunsidf'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_floatsidf.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:2143: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__floatsidf':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__floatsidf'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_floatsidf.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:2154: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__fixunsdfsi':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__fixunsdfsi'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_fixunsdfsi.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:1999: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__fixdfsi':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__fixdfsi'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_fixdfsi.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:1872: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__divsf3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__divsf3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_divsf3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-sf.S:912: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__divdf3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__divdf3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_divdf3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:1421: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__extendsfdf2':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__extendsfdf2'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_extendsfdf2.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:2402: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__muldf3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__muldf3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_muldf3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:763: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__subdf3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__subdf3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_addsubdf3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/config/xtensa/ieee754-df.S:362: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__divdi3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__divdi3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_divdi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/libgcc2.c:1212: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__moddi3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__moddi3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_moddi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/libgcc2.c:1236: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__udivdi3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__udivdi3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_udivdi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/libgcc2.c:1299: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(compiler_builtins-8efe5aa9d251e5ee.compiler_builtins.69fa668e5acca28c-cgu.1.rcgu.o): in function `__umoddi3':
/home/peter/.cargo/registry/src/index.crates.io-6f17d22bba15001f/compiler_builtins-0.1.105/src/macros.rs:499: multiple definition of `__umoddi3'; /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/libgcc.a(_umoddi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp-elf/src/gcc/libgcc/libgcc2.c:1287: first defined here
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: warning: /home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/esp32/no-rtti/crtn.o: missing .note.GNU-stack section implies executable stack
/home/peter/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/../lib/gcc/xtensa-esp-elf/13.2.0/../../../../xtensa-esp-elf/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/esp32-hello-rust.elf.dir/build.make:490: esp32-hello-rust.elf] Error 1
make[1]: *** [CMakeFiles/Makefile2:2084: CMakeFiles/esp32-hello-rust.elf.dir/all] Error 2
make: *** [Makefile:136: all] Error 2
make failed with exit code 2, output of the command is in the /home/peter/data/code/rust-esp32-example/build/log/idf_py_stderr_output_3024475 and /home/peter/data/code/rust-esp32-example/build/log/idf_py_stdout_output_3024475

I spend some time debugging and in the end found the combination that made the problems.

removing clib as i do not need to call c from my rust code and enabling bt as i need that in my project. See diff below:

peter:~/data/code/rust-esp32-example(main)$ git diff
diff --git a/components/rustlib/CMakeLists.txt b/components/rustlib/CMakeLists.txt
index 4100cff..53fd0dc 100644
--- a/components/rustlib/CMakeLists.txt
+++ b/components/rustlib/CMakeLists.txt
@@ -1,4 +1,4 @@
-set(RUST_DEPS "clib")
+#set(RUST_DEPS "clib")
 
 idf_component_register(
     SRCS "placeholder.c"
diff --git a/components/rustlib/src/lib.rs b/components/rustlib/src/lib.rs
index c10bbbc..195c1cb 100644
--- a/components/rustlib/src/lib.rs
+++ b/components/rustlib/src/lib.rs
@@ -33,19 +33,19 @@ pub mod sys {
 
 #[no_mangle]
 pub extern "C" fn add_in_rust(x: i32, y: i32) -> i32 {
-    unsafe {
-        sys::validate_param_in_c(0, x);
-        sys::validate_param_in_c(1, y);
-    }
+    // unsafe {
+    //     sys::validate_param_in_c(0, x);
+    //     sys::validate_param_in_c(1, y);
+    // }
     x + y
 }
 
 #[no_mangle]
 pub extern "C" fn add_in_rust_inline_asm(mut x: i32, y: i32) -> i32 {
-    unsafe {
-        sys::validate_param_in_c(0, x);
-        sys::validate_param_in_c(1, y);
-    }
+    // unsafe {
+    //     sys::validate_param_in_c(0, x);
+    //     sys::validate_param_in_c(1, y);
+    // }
     unsafe {
         // more detail available: https://doc.rust-lang.org/beta/unstable-book/library-features/asm.html
         asm!("add {0}, {0}, {1}", inout(reg) x, in(reg) y);
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index e69de29..032247b 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -0,0 +1 @@
+CONFIG_BT_ENABLED=y
peter:~/data/code/rust-esp32-example(main)$ 

Can you help me understand if im doing something wrong or if there is a problem in the esp code somewhere