Application: Enhance ACPI_USAGE_xxx/ACPI_OPTION with AcpiOsPrintf() to improve portability.

This patch enhances ACPI_USAGE_xxx/ACPI_OPTION macros to use portable
AcpiOsPrintf() so that usage functions for applications no longer rely on
the printf() API.

To use AcpiOsPrintf() exported by osunixxf.c/oswinxf.c as a replacement of
printf, applications need to initialize AcpiGbl_OutputFile to stdout and
initialize AcpiGbl_DbOutputFlags to ACPI_DB_CONSOLE_OUTPUT. The latter is
automatically done by ACPI_INIT_GLOBAL(), applications need to link
utglobal.o to utilize this mechanism. For GCC, assigning stdout to
AcpiGbl_OutputFile using ACPI_INIT_GLOBAL() is not possible as stdout is
not a constant in GCC environment. As an alternative solution, stdout
assignment has been put into AcpiOsInitialize(). Thus AcpiOsInitialize()
need to be invoked very early by the applications to initialize the default
output of AcpiOsPrintf() to keep behavior consistency.

The details of AcpiOsInitialize() are as follows:
1. acpidump have already invoked AcpiOsInitialize(), thus no need to add.
2. acpiexamples/acpiexec/acpinames have already invoked
   AcpiInitializeSubsystem() very early, thus no need to add
   AcpiOsInitialize() for them.
3. iasl have already invoked AcpiOsInitialize(), but the invocation is not
   early enough to make its usage functioning proper. This patch adds an
   early AcpiOsInitialize() invocation for it.

Unix makefiles are also updated to include osunixxf.o/utglobal.o in this
patch.  The acpihelp/acpisrc/acpixtract applications are the only ones that
do not have the 2 object files linked. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/source/tools/acpixtract/axmain.c b/source/tools/acpixtract/axmain.c
index f9d4fae43..73b575c7a 100644
--- a/source/tools/acpixtract/axmain.c
+++ b/source/tools/acpixtract/axmain.c
@@ -170,8 +170,8 @@ DisplayUsage (
     ACPI_OPTION ("-s <signature>",      "Extract all tables with <signature>");
     ACPI_OPTION ("-v",                  "Display version information");
 
-    printf ("\nExtract binary ACPI tables from text acpidump output\n");
-    printf ("Default invocation extracts the DSDT and all SSDTs\n");
+    ACPI_USAGE_TEXT ("\nExtract binary ACPI tables from text acpidump output\n");
+    ACPI_USAGE_TEXT ("Default invocation extracts the DSDT and all SSDTs\n");
 }
 
 
@@ -194,6 +194,7 @@ main (
 
 
     ACPI_DEBUG_INITIALIZE (); /* For debug version only */
+    AcpiOsInitialize ();
     printf (ACPI_COMMON_SIGNON (AX_UTILITY_NAME));
 
     if (argc < 2)