Remove make preinstall

A speciality of the RTEMS build system was the make preinstall step.  It
copied header files from arbitrary locations into the build tree.  The
header files were included via the -Bsome/build/tree/path GCC command
line option.

This has at least seven problems:

* The make preinstall step itself needs time and disk space.

* Errors in header files show up in the build tree copy.  This makes it
  hard for editors to open the right file to fix the error.

* There is no clear relationship between source and build tree header
  files.  This makes an audit of the build process difficult.

* The visibility of all header files in the build tree makes it
  difficult to enforce API barriers.  For example it is discouraged to
  use BSP-specifics in the cpukit.

* An introduction of a new build system is difficult.

* Include paths specified by the -B option are system headers.  This
  may suppress warnings.

* The parallel build had sporadic failures on some hosts.

This patch removes the make preinstall step.   All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc.  Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.

The new cpukit include directories are:

* cpukit/include

* cpukit/score/cpu/@RTEMS_CPU@/include

* cpukit/libnetworking

The new BSP include directories are:

* bsps/include

* bsps/@RTEMS_CPU@/include

* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include

There are build tree include directories for generated files.

The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.

The "bootstrap -p" option was removed.  The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.

Update #3254.

1 files changed, 51 insertions, 0 deletions

diff --git a/bsps/i386/include/libcpu/cpuModel.h b/bsps/i386/include/libcpu/cpuModel.h
new file mode 100644
index 0000000000..d17839b7ea
--- /dev/null
+++ b/bsps/i386/include/libcpu/cpuModel.h
@@ -0,0 +1,51 @@
+/*
+ *  This file contains declaration for variables and code
+ *  that may be used to get the Intel Cpu identification
+ *  that has been performed by checkCPUtypeSetCr0 function.
+ */
+
+/*
+ *  COPYRIGHT (c) 1998 valette@crf.canon.fr
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef libcpu_cpuModel_h
+#define libcpu_cpuModel_h
+
+/*
+ * Tell us the machine setup..
+ */
+
+extern char hard_math;	/* floating point coprocessor present indicator */
+extern char x86;	/* type of cpu (3 = 386, 4 =486, ...) */
+extern char x86_model;
+extern char x86_mask;
+extern int x86_capability;       /* cpuid:EDX */
+extern int x86_capability_x;     /* cpuid:ECX */
+extern int x86_capability_ebx;   /* cpuid:EBX */
+extern int x86_capability_cores; /* cpuid.(EAX=4, ECX=0) - physical cores */
+extern char x86_vendor_id[13];
+extern int have_cpuid;
+extern unsigned char Cx86_step; /* cyrix processor identification */
+
+/* Display this information on console in ascii form */
+extern void printCpuInfo(void);
+
+/* determine if the CPU has a TSC */
+#define x86_has_tsc() \
+  (x86_capability & (1 << 4))
+
+static inline unsigned long long
+rdtsc(void)
+{
+  /* Return the value of the on-chip cycle counter. */
+  unsigned long long result;
+  __asm__ volatile(".byte 0x0F, 0x31" : "=A" (result));
+  return result;
+} /* rdtsc */
+
+
+#endif