X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fprog_guide%2Fdev_kit_build_system.rst;h=18a30104dc6c8fec3b423827119ef6020e66653d;hb=65eca099f405e23b9f382a3b4ca611bc32fddc88;hp=04f1d4eb14bca90c5dc0660b095b29a4d6f91a94;hpb=55ae322d619be42cfd8b4f7a695268c2f8a9629e;p=dpdk.git

diff --git a/doc/guides/prog_guide/dev_kit_build_system.rst b/doc/guides/prog_guide/dev_kit_build_system.rst
index 04f1d4eb14..18a30104dc 100644
--- a/doc/guides/prog_guide/dev_kit_build_system.rst
+++ b/doc/guides/prog_guide/dev_kit_build_system.rst
@@ -70,7 +70,7 @@ Each build directory contains include files, libraries, and applications:
     ...
     ~/DEV/DPDK$ ls i686-native-linuxapp-gcc
 
-    app build hostapp include kmod lib Makefile
+    app build buildtools include kmod lib Makefile
 
 
     ~/DEV/DPDK$ ls i686-native-linuxapp-gcc/app/
@@ -85,7 +85,7 @@ Each build directory contains include files, libraries, and applications:
 
     librte_cmdline.a librte_lpm.a librte_mempool.a librte_ring.a
 
-    librte_eal.a librte_malloc.a librte_pmd_e1000.a librte_timer.a
+    librte_eal.a librte_pmd_e1000.a librte_timer.a
 
 
     ~/DEV/DPDK$ ls i686-native-linuxapp-gcc/include/
@@ -264,7 +264,7 @@ These Makefiles generate a binary application.
 
 *   rte.extapp.mk: External application
 
-*   rte.hostapp.mk: Host application in the development kit framework
+*   rte.hostapp.mk: prerequisite tool to build dpdk
 
 Library
 ^^^^^^^
@@ -304,6 +304,44 @@ Misc
 
 *   rte.subdir.mk: Build several directories in the development kit framework.
 
+.. _Internally_Generated_Build_Tools:
+
+Internally Generated Build Tools
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+``app/pmdinfogen``
+
+
+``pmdinfogen`` scans an object (.o) file for various well known symbol names.  These
+well known symbol names are defined by various macros and used to export
+important information about hardware support and usage for pmd files.  For
+instance the macro:
+
+.. code-block:: c
+
+   PMD_REGISTER_DRIVER(drv, name)
+
+Creates the following symbol:
+
+.. code-block:: c
+
+   static char this_pmd_name0[] __attribute__((used)) = "<name>";
+
+
+Which pmdinfogen scans for.  Using this information other relevant bits of data
+can be exported from the object file and used to produce a hardware support
+description, that pmdinfogen then encodes into a json formatted string in the
+following format:
+
+.. code-block:: c
+
+   static char <name_pmd_string>="PMD_INFO_STRING=\"{'name' : '<name>', ...}\"";
+
+
+These strings can then be searched for by external tools to determine the
+hardware support of a given library or application.
+
+
 .. _Useful_Variables_Provided_by_the_Build_System:
 
 Useful Variables Provided by the Build System
@@ -343,6 +381,8 @@ Useful Variables Provided by the Build System
     By default, the variable is set to /lib/modules/$(shell uname -r)/build,
     which is correct when the target machine is also the build machine.
 
+*   RTE_DEVEL_BUILD: Stricter options (stop on warning). It defaults to y in a git tree.
+
 Variables that Can be Set/Overridden in a Makefile Only
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -411,6 +451,8 @@ Variables that Can be Set/Overridden by the User in a Makefile or Command Line
 
 *   EXTRA_LDFLAGS: The content of this variable is appended after LDFLAGS when linking.
 
+*   EXTRA_LDLIBS: The content of this variable is appended after LDLIBS when linking.
+
 *   EXTRA_ASFLAGS: The content of this variable is appended after ASFLAGS when assembling.
 
 *   EXTRA_CPPFLAGS: The content of this variable is appended after CPPFLAGS when using a C preprocessor on assembly files.