Use configure to set note release bsd

Using uname in tccelf.c was not working when cross compiling.
So move it to configure script.

Author: hermantb

configure

@@ -27,6 +27,7 @@ mandir=""
 infodir=""
 sysroot=""
 cross_prefix=""
+os_release=""
 cc="gcc"
 ar="ar"
 bigendian="no"
@@ -123,6 +124,8 @@ for opt do
   ;;
   --cross-prefix=*) assign_opt "$opt" cross_prefix
   ;;
+  --os-release=*) assign_opt "$opt" os_release
+  ;;
   --cc=*) assign_opt "$opt"
   ;;
   --ar=*) assign_opt "$opt" ; ar_set="yes"
@@ -232,6 +235,7 @@ Cross build options (experimental):
   --cpu=CPU                target CPU [$cpu]
   --targetos=...           target OS (Darwin,WIN32,Android/Termux) [$targetos]
   --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]
+  --os-release=x.y.z       use os release x.y.z [$os_release]
 EOF
 exit 1
 }
@@ -290,6 +294,11 @@ then
   ar="${cross_prefix}${ar}"
 fi
 
+if test -z "$os_release"
+then
+   os_release=$(uname -r)
+fi
+
 case "$cpu" in
   x86|i386|i486|i586|i686|i86pc|BePC|i686-AT386)
     cpu="i386"
@@ -704,6 +713,7 @@ print_str CONFIG_TCC_ELFINTERP "$tcc_elfinterp"
 print_str CONFIG_TCC_SWITCHES "$tcc_switches"
 print_str CONFIG_LDDIR "$tcc_lddir"
 print_str CONFIG_TRIPLET "$triplet"
+print_str CONFIG_OS_RELEASE "$os_release"
 echo "#endif" >> $TMPH && echo >> $TMPH
 
 print_str CONFIG_SYSROOT "$sysroot" x

tccelf.c

@@ -2804,9 +2804,6 @@ static void create_arm_attribute_section(TCCState *s1)
 #endif
 
 #if TARGETOS_OpenBSD || TARGETOS_NetBSD || TARGETOS_FreeBSD
-#ifndef _WIN32
-#include <sys/utsname.h>
-#endif
 
 static void fill_bsd_note(Section *s, int type,
 			  const char *value, uint32_t data)
@@ -2839,12 +2836,9 @@ static Section *create_bsd_note_section(TCCState *s1,
 {
     Section *s;
     unsigned int major = 0, minor = 0, patch = 0;
-#ifndef _WIN32
-    struct utsname uts;
 
-/* Maybe move this to configure option for cross compiling */
-    if (!uname(&uts))
-	sscanf(uts.release, "%u.%u.%u", &major, &minor, &patch);
+#ifdef CONFIG_OS_RELEASE
+    sscanf(CONFIG_OS_RELEASE, "%u.%u.%u", &major, &minor, &patch);
 #endif
 #if TARGETOS_FreeBSD
     if (major < 14)