baremetal: second try (with i386-elf-gcc)

core/shared/platform/baremetal/platform_init.c

@@ -2,6 +2,7 @@
 
 // Many implementations taken from musl: https://git.musl-libc.org
 
+#ifdef NODEF
 typedef int (*cmpfun)(const void *, const void *);
 
 void
@@ -183,11 +184,13 @@ os_cond_destroy(korp_cond *cond)
 {
     return 0;
 }
+#endif
 
 /****************************************************
  * string
  ****************************************************/
 
+#ifdef NODEF
 static char *
 twobyte_strstr(const unsigned char *h, const unsigned char *n)
 {
@@ -381,6 +384,7 @@ strstr(const char *h, const char *n)
 
     return twoway_strstr((void *)h, (void *)n);
 }
+#endif
 
 __attribute__((weak)) void *
 memcpy(void *restrict dest, const void *restrict src, size_t n)
@@ -459,6 +463,7 @@ memset(void *dest, int c, size_t n)
     return dest;
 }
 
+#ifdef NODEF
 __attribute__((weak)) int
 memcmp(const void *vl, const void *vr, size_t n)
 {
@@ -611,11 +616,13 @@ strncasecmp(const char *_l, const char *_r, size_t n)
         ;
     return my_tolower(*l) - my_tolower(*r);
 }
+#endif
 
 /****************************************************
  * stdio
  ****************************************************/
 
+#ifdef NODEF
 __attribute__((weak)) int
 snprintf(char *restrict s, size_t n, const char *restrict fmt, ...)
 {
@@ -644,6 +651,7 @@ __vsnprintf_chk(char *s, size_t n, int m, size_t o, const char *fmt,
 {
     return 0;
 }
+#endif
 
 /****************************************************
  * mman
@@ -676,6 +684,7 @@ os_mprotect(void *addr, size_t size, int prot)
  * lgcc/math
  ****************************************************/
 
+#ifdef NODEF
 double
 sqrt(double x)
 {
@@ -688,7 +697,6 @@ sqrtf(float x)
     return 0.0;
 }
 
-/*
 #define arith64_u64 unsigned long long int
 #define arith64_s64 signed long long int
 #define arith64_u32 unsigned int
@@ -1002,17 +1010,17 @@ __attribute__((weak)) arith64_u64
 __udivmoddi4(arith64_u64 a, arith64_u64 b, arith64_u64 *c)
 {
     //
-https://gcc.gnu.org/onlinedocs/gccint/Integer-library-routines.html#index-_005f_005fudivmoddi4
+https: // gcc.gnu.org/onlinedocs/gccint/Integer-library-routines.html#index-_005f_005fudivmoddi4
     *c = __umoddi3(a, b);
     return __udivdi3(a, b);
 }
-*/
+#endif
 
 /****************************************************
  * rwlock
  ****************************************************/
 
-/*
+#ifdef NODEF
 int
 os_rwlock_init(korp_rwlock *rwlock)
 {
@@ -1076,7 +1084,7 @@ os_rwlock_unlock(korp_rwlock *rwlock)
     }
     return 0;
 }
-*/
+#endif
 
 /****************************************************
  *                     Section 1                    *

core/shared/platform/baremetal/platform_internal.h

@@ -13,9 +13,9 @@
 #include <ctype.h>
 #include <pthread.h>
 // #include <signal.h>
-#include <semaphore.h>
+// #include <semaphore.h>
 // #include <limits.h>
-#include <dirent.h>
+// #include <dirent.h>
 // #include <fcntl.h>
 // #include <unistd.h>
 // #include <poll.h>
@@ -46,7 +46,9 @@ typedef pthread_t korp_tid;
 typedef pthread_mutex_t korp_mutex;
 typedef pthread_cond_t korp_cond;
 typedef pthread_t korp_thread;
-typedef sem_t korp_sem;
+typedef struct {
+    int dummy;
+} korp_sem;
 
 // typedef pthread_rwlock_t korp_rwlock;
 typedef struct {
@@ -55,7 +57,9 @@ typedef struct {
 } korp_rwlock;
 
 typedef int os_file_handle;
-typedef DIR *os_dir_stream;
+typedef struct {
+    int dummy;
+} *os_dir_stream;
 typedef int os_raw_file_handle;
 
 static inline os_file_handle

core/shared/platform/baremetal/shared_platform.cmake

@@ -3,10 +3,10 @@ set (PLATFORM_SHARED_DIR ${CMAKE_CURRENT_LIST_DIR})
 add_definitions(-DBH_PLATFORM_BAREMETAL)
 
 include_directories(${PLATFORM_SHARED_DIR})
+
 include_directories(${PLATFORM_SHARED_DIR}/../include)
+# file (GLOB header ${PLATFORM_SHARED_DIR}/../include/baremetal/*.h)
+# list (APPEND RUNTIME_LIB_HEADER_LIST ${header})
 
 file (GLOB_RECURSE source_all ${PLATFORM_SHARED_DIR}/*.c)
 set (PLATFORM_SHARED_SOURCE ${source_all})
-
-file (GLOB header ${PLATFORM_SHARED_DIR}/../include/baremetal/*.h)
-LIST (APPEND RUNTIME_LIB_HEADER_LIST ${header})