tccgen: nodata_wanted fix, default ONE_SOURCE, etc...

tccgen.c:
  doubles need to be aligned, on ARM.  The section_reserve()
  in init_putv does not do that.
-D ONE_SOURCE: is now the default and not longer needed. Also,
  tcc.h now sets the default native target.  These both make
  compiling tcc simple as "gcc tcc.c -o tcc -ldl" again.
arm-asm.c:
  enable pseudo asm also for inline asm
tests/tests2/Makefile:
  disable bitfield tests except on windows and x86_64
  and don't generate-always
tcc.c:
  fix a loop with -dt on errors
configure:
  print compiler version (as recognized)
tccpp.c:
  actually define symbols for tcc -dt
  clear static variables (needed for -dt or libtcc usage)
96_nodata_wanted.c:
  use __label__ instead of asm
lib/files:
  use native symbols (__i386__ etc.) instead of TCC_TARGET_...

1 files changed, 36 insertions, 23 deletions

diff --git a/tcc.h b/tcc.h
index 05371bd..bfe6ab4 100644
--- a/tcc.h
+++ b/tcc.h
@@ -81,6 +81,14 @@ extern long double strtold (const char *__nptr, char **__endptr);
 # define O_BINARY 0
 #endif
 
+#ifndef offsetof
+#define offsetof(type, field) ((size_t) &((type *)0)->field)
+#endif
+
+#ifndef countof
+#define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
+#endif
+
 #ifdef _MSC_VER
 # define NORETURN __declspec(noreturn)
 # define ALIGNED(x) __declspec(align(x))
@@ -99,12 +107,6 @@ extern long double strtold (const char *__nptr, char **__endptr);
 # define PATHCMP strcmp
 #endif
 
-#ifdef TCC_TARGET_PE
-#define PATHSEP ';'
-#else
-#define PATHSEP ':'
-#endif
-
 /* -------------------------------------------- */
 
 /* parser debug */
@@ -129,12 +131,20 @@ extern long double strtold (const char *__nptr, char **__endptr);
 #if !defined(TCC_TARGET_I386) && !defined(TCC_TARGET_ARM) && \
     !defined(TCC_TARGET_ARM64) && !defined(TCC_TARGET_C67) && \
     !defined(TCC_TARGET_X86_64)
-#define TCC_TARGET_I386
-#endif
-
-/* object format selection */
-#if defined(TCC_TARGET_C67)
-#define TCC_TARGET_COFF
+# if defined __x86_64__ || defined _AMD64_
+#  define TCC_TARGET_X86_64
+# elif defined __arm__
+#  define TCC_TARGET_ARM
+#  define TCC_ARM_EABI
+#  define TCC_ARM_HARDFLOAT
+# elif defined __aarch64__
+#  define TCC_TARGET_ARM64
+# else
+#  define TCC_TARGET_I386
+# endif
+# ifdef _WIN32
+#  define TCC_TARGET_PE 1
+# endif
 #endif
 
 /* only native compiler supports -run */
@@ -164,7 +174,7 @@ extern long double strtold (const char *__nptr, char **__endptr);
 # define CONFIG_SYSROOT ""
 #endif
 #ifndef CONFIG_TCCDIR
-# define CONFIG_TCCDIR "."
+# define CONFIG_TCCDIR "/usr/local/lib/tcc"
 #endif
 #ifndef CONFIG_LDDIR
 # define CONFIG_LDDIR "lib"
@@ -266,6 +276,12 @@ extern long double strtold (const char *__nptr, char **__endptr);
 #define TCC_LIBGCC USE_TRIPLET(CONFIG_SYSROOT "/" CONFIG_LDDIR) "/libgcc_s.so.1"
 #endif
 
+#ifdef TCC_TARGET_PE
+#define PATHSEP ';'
+#else
+#define PATHSEP ':'
+#endif
+
 /* -------------------------------------------- */
 
 #include "libtcc.h"
@@ -278,7 +294,11 @@ extern long double strtold (const char *__nptr, char **__endptr);
 # define PUB_FUNC
 #endif
 
-#ifdef ONE_SOURCE
+#ifndef ONE_SOURCE
+# define ONE_SOURCE 1
+#endif
+
+#if ONE_SOURCE
 #define ST_INLN static inline
 #define ST_FUNC static
 #define ST_DATA static
@@ -314,6 +334,7 @@ extern long double strtold (const char *__nptr, char **__endptr);
 # include "arm64-link.c"
 #endif
 #ifdef TCC_TARGET_C67
+# define TCC_TARGET_COFF
 # include "coff.h"
 # include "c67-gen.c"
 # include "c67-link.c"
@@ -965,14 +986,6 @@ struct filespec {
 #define TOK_A_SHL 0x81
 #define TOK_A_SAR 0x82
 
-#ifndef offsetof
-#define offsetof(type, field) ((size_t) &((type *)0)->field)
-#endif
-
-#ifndef countof
-#define countof(tab) (sizeof(tab) / sizeof((tab)[0]))
-#endif
-
 #define TOK_EOF       (-1)  /* end of file */
 #define TOK_LINEFEED  10    /* line feed */
 
@@ -1641,7 +1654,7 @@ ST_FUNC void gen_makedeps(TCCState *s, const char *target, const char *filename)
 
 /********************************************************/
 #undef ST_DATA
-#ifdef ONE_SOURCE
+#if ONE_SOURCE
 #define ST_DATA static
 #else
 #define ST_DATA