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OVERVIEW of "ns/coreconf": This README file is an attempt to provide the reader with a simple synopsis of the "ns/coreconf" build system which was originally fundamentally designed and built to accomodate Netscape's binary release model. Wherever possible, an attempt has been made to comply with the NSPR 2.0 build system, including mimicing the compiler/linker flags, and directory naming structure. The reader should keep in mind that the system builds binary releases of header files, class files, libraries, and executables on numerous flavors of UNIX and Windows operating systems. Unfortunately, no serious attempt has ever been made to incorporate an ability to generate cross-platform binaries on an Apple MacIntosh platform. Note that this file will not attempt to redefine or document the architecture of this system. However, documents on this subject are available at the following URL: http://warp/hardcore/prj-ttools/specs/release/index.html DEPENDENCIES of "ns/coreconf": The "ns/coreconf" build system requires the specified versions of the following platform-dependent tools: UNIX Platforms: -------------- gmake (version 3.74 or later) perl 4.0 (NOTE: perl 5.003 or later recommended) uname Windows Platforms: ----------------- gmake 3.74 (must use hacked Netscape version) shmsdos.exe (contained in Netscape gmake.exe) nsinstall.exe (contained in Netscape gmake.exe) perl.exe (version 4.0 for everything except testing; NOTE: MKS toolkit perl 5.002 is broken) perl5.exe (for testing; NOTE: perl 5.003 or later recommended; MKS toolkit perl 5.002 is broken) uname.exe (use nstools version) ENHANCEMENTS to "ns/coreconf": With the advent of Certificate Server 4.0 using the ns/coreconf build system, several changes had to be made to enhance ns/coreconf support for building Java/JNI classes/programs, as well as libraries slated to be released as binaries. While the following may not represent an exhaustive list of these changes, it does attempt to be at least somewhat comprehensive: (1) During the course of these enhancements, a total of four files have been modified, and four new files have been added. The following files have been modified: - command.mk: removed old definition of JAR - config.mk: added include statement of new "jdk.mk" file - ruleset.mk: allowed the $(MKPROG) variable to be overridden by supplying it with a default value of $(CC); augmented numerous definitions to enhance ability of ns/coreconf to produce a more robust set of libraries; added some JNI definitions; PACKAGE definition may be overridden by new "jdk.mk" file - rules.mk: separated the compile phase of a program from the link phase of a program such that a developer can now strictly override program linkage by simply supplying a $(MKPROG) variable; augmented NETLIBDEPTH to use CORE_DEPTH but retain backward compatibility; added JNI section; modified .PRECIOUS rule; The following files have been added: - README: this file; an ASCII-based text document used to summarize the ns/coreconf build system and suitable (paginated) for printing - jdk.mk: a file comprising most (if not all) of the default Java related build information; the definitions in this file are only included if NS_USE_JDK has been defined - jniregen.pl: a perl script used to create a dependency for when JNI files should be regenerated (based upon any change to the ".class" file from which the ".h" file was originally generated) - outofdate.pl: a perl script used to create a dependency for when ".class" files should be regenerated (based upon any change to the ".java" file from which the ".class" file was originally generated) (2) As stated above, the ns/coreconf build system now separates the link phase of a program from its compilation phase. While ns/coreconf still works exactly as it used to because the $(MKPROG) variable is assigned $(CC) by default, a developer may now override this behavior by simply supplying their own unique value for $(MKPROG) on every platform. This allows a program compiled with $(CC) to link with external libraries that may contain "C++" linkage. Before this change, a programmer would need to reference their own local copy of rules.mk (see the ns/sectools/cmd/pk12util program for an example of how this used to be accomplished). (3) Currently, the ns/coreconf build system differs from the NSPR 2.0 build system which utilizes an "_s" to denote static libraries from import libraries. In fact, the ns/coreconf build system adds no prefixes or suffixes to distinguish one version of static libraries from another. Note that both the ns/coreconf build system as well as the NSPR 2.0 build system do nothing to provide a method of distinguishing 16-bit from 32-bit static libraries on the same machine, either, since: a) this might only provide difficulty during development, since static libraries always need to be embedded within a program (note this is highly unlikely, since libraries for different platforms are subdivided via a well-known subdirectory structure, and a developer may use multiple trees for development), b) this maintains backwards compatibility, something very important since no legacy programs will need to change their link phase, and c) Netscape as a company has dropped any plans of future development of 16-bit products. (4) Since several members of the Hardcore Security group did not favor NSPR 2.0's solution of adding an "_s" to static libraries on Windows platforms as a method to distinguish them from their import library cousins, a different solution was proposed and has been recently implemented for ns/coreconf: - a 16 has been added as a suffix to both dynamic and import libraries built on 16-bit Windows platforms - a 32 has been added as a suffix to both dynamic and import libraries built on 32-bit Windows platforms Since the HCL release process currently only contains a single instance of building a dynamic library, ns/security/lib/fortcrypt/fort12.dll, the impact of this change should be relatively small. (Note: HCL was the old name of NSS.) It should be noted that although this would additionally limit the 8.3 namespace on 16-bit platforms, it is highly unlikely that any future development will be performed on this platform. (5) The $(LIBRARY_VERSION) tag has been added to all non-static libraries created on UNIX operating systems to alleviate any future confusion for binary releases which utilize this tag. Again, it should be noted that this tag is only utilized on non-static libraries, since more than one version of the library may need to exist simultaneously if multiple products are utilized. Currently, only one HCL released library utilizes this tag: ns/security/lib/fortcrypt/fort12.a (e. g. - in this library, the tag has been set to '12') Again, it should be noted that although this would additionally limit the 8.3 namespace on 16-bit platforms, it is highly unlikely that any future development will be performed on this platform. (6) The $(JDK_DEBUG_SUFFIX) extension has been added to all library and program names to support debug versions of Java programs (e. g. - java_g, javac_g, etc). Once again, it should be noted that although this would additionally limit the 8.3 namespace on 16-bit platforms, it is highly unlikely that any future Java development will be performed on this platform. (7) Most (if not all) default definitions for java have been encapsulated within their own file, jdk.mk, which is always included by default in ns/coreconf/config.mk. However, the definitions within this file are only ever activated if NS_USE_JDK has been set to be 1. (8) Two perl scripts (jniregen.pl and outofdate.pl) have been added to the system to foster a more robust development environment for composing Java and JNI programs utilizing the ns/coreconf build system. Both of these perl scripts are related to resolving dependencies which can not be accomplished through normal makefile dependencies. (9) This file, README, was created in an attempt to allow developers who have familiarity with ns/coreconf a simple roadmap for what has changed, as well as a top-level view of what comprises ns/coreconf. This file was written in ASCII (rather than HTML) primarily to promote simple paginated printing. OVERVIEW of "config.mk": This file contains the configuration information necessary to build each "Core Components" source module: include file name Purpose =================== ======================================= arch.mk source and release <architecture> tags command.mk default command macros (NOTE: may be overridden in $(OS_CONFIG).mk) $(OS_CONFIG).mk <architecture>-specific macros (dependent upon <architecture> tags) tree.mk release <tree> tags (dependent upon <architecture> tags) module.mk source and release <component> tags (NOTE: A component is also called a module or a subsystem. This file is dependent upon $(MODULE) being defined on the command line, as an environment variable, or in individual makefiles, or more appropriately, manifest.mn) version.mk release <version> tags (dependent upon $(MODULE) being defined on the command line, as an environment variable, or in individual makefiles, or more appropriately, manifest.mn) location.mk macros to figure out binary code location (dependent upon <platform> tags) source.mk <component>-specific source path (dependent upon <user_source_tree>, <source_component>, <version>, and <platform> tags) headers.mk include switch for support header files (dependent upon <tree>, <component>, <version>, and <platform> tags) prefix.mk compute program prefixes suffix.mk compute program suffixes (dependent upon <architecture> tags) jdk.mk define JDK (dependent upon <architecture>, <source>, and <suffix> tags) ruleset.mk Master "Core Components" rule set (should always be the last file included by config.mk) OVERVIEW of "rules.mk": The "rules.mk" file consists of four sections. The first section contains the "master" build rules for all binary releases. While this section can (and should) largely be thought of as "language" independent, it does utilize the "perl" scripting language to perform both the "import" and "release" of binary modules. The rules which dwell in this section and their purpose: CATEGORY/rule:: Purpose =================== ======================================= GENERAL ------- all:: "default" all-encompassing rule which performs "export libs program install" export:: recursively copy specified cross-platform header files to the $(SOURCE_XPHEADERS_DIR) directory; recursively copy specified machine-dependent header files to the $(SOURCE_MDHEADERS_DIR) directory; although all rules can be written to repetively "chain" into other sections, this rule is the most commonly used rule to "chain" into other sections such as Java providing a simple mechanism which allows no need for developers to memorize specialized rules libs:: recursively build static (archival) $(LIBRARY), shared (dynamic link) $(SHARED_LIBRARY), and/or import $(IMPORT_LIBRARY) libraries program:: recursively build $(PROGRAM) executable install:: recursively copy all libraries to $(SOURCE_LIB_DIR) directory; recursively copy all executables to $(SOURCE_BIN_DIR) directory clean:: remove all files specified in the $(ALL_TRASH) variable clobber:: synonym for "clean::" rule realclean:: remove all files specified by $(wildcard *.OBJ), dist, and in the $(ALL_TRASH) variable clobber_all:: synonym for "realclean::" rule private_export:: recursively copy specified cross-platform header files to the $(SOURCE_XPPRIVATE_DIR) directory IMPORT ------ import:: uses perl script to retrieve specified VERSION of the binary release from $(RELEASE_TREE) RELEASE ------- release_clean:: remove all files from the $(SOURCE_RELEASE_PREFIX) directory release:: place specified VERSION of the binary release in the appropriate $(RELEASE_TREE) directory release_export:: recursively copy specified cross-platform header files to the $(SOURCE_XPHEADERS_DIR)/include directory release_md:: recursively copy all libraries to $(SOURCE_RELEASE_PREFIX)/ $(SOURCE_RELEASE_LIB_DIR) directory; recursively copy all executables to $(SOURCE_RELEASE_PREFIX)/ $(SOURCE_RELEASE_BIN_DIR) directory release_jars:: use perl script to package appropriate files in the $(XPCLASS_JAR), $(XPHEADER_JAR), $(MDHEADER_JAR), and $(MDBINARY_JAR) jar files release_cpdistdir:: use perl script to copy the $(XPCLASS_JAR), $(XPHEADER_JAR), $(MDHEADER_JAR), and $(MDBINARY_JAR) jar files to the specified VERSION of the $(RELEASE_TREE) directory TOOLS and AUTOMATION -------------------- platform:: tool used to display the platform name as composed within the "arch.mk" file autobuild:: automation rule used by "Bonsai" and "Tinderbox" to automatically generate binary releases on various platforms tests:: automation tool used to run the "regress" and "reporter" tools on various regression test suites The second section of "rules.mk" primarily contains several "language" dependent build rules for binary releases. These are generally "computed" rules (created on the "fly"), and include rules used by "C", "C++", assembly, the preprocessor, perl, and the shell. The rules which dwell in this section and their purpose: CATEGORY/rule:: Purpose =================== ============================= LIBRARIES --------- $(LIBRARY): build the static library specified by the $(LIBRARY) variable $(IMPORT_LIBRARY): build the import library specified by the $(IMPORT_LIBRARY) variable $(SHARED_LIBRARY): build the shared (dynamic link) library specified by the $(SHARED_LIBRARY) variable PROGRAMS -------- $(PROGRAM): build the binary executable specified by the $(PROGRAM) rule $(OBJDIR)/ $(PROG_PREFIX)%.pure: build the "purified" binary executable specified by this rule OBJECTS ------- $(OBJDIR)/ $(PROG_PREFIX)%$(OBJ_SUFFIX): build the object file associated with the makefile rule dependency: %.c = C file %.cpp = C++ file %.cc = C++ file %.s = assembly file %.S = assembly file $(OBJDIR)/ $(PROG_PREFIX)%: (NOTE: deprecated rule) build the object file associated with the makefile rule dependency: %.cpp = C++ file MISCELLANEOUS ------------- %.i: build the preprocessor file associated with the makefile rule dependency: %.c = C file %.cpp = C++ file %: process the specified file using the method associated with the makefile rule dependency: %.pl = perl script %.sh = shell script alltags: tool used to recursively create a "ctags"-style file for reference The third section of "rules.mk' primarily contains several JAVA "language" build rules for binary releases. These are also generally "computed" rules (created on the "fly"). The rules which dwell in this section and their purpose: CATEGORY/rule:: Purpose =================== ============================= $(JAVA_DESTPATH):: create directory specified as the Java destination path for where classes are deposited $(JAVA_DESTPATH)/$(PACKAGE):: create directories specified within the $(PACKAGE) variable $(JMCSRCDIR):: create directory specified as the JMC destination path $(JRI_HEADER_CFILES): used to generate/regenerate JRI header files for "C" $(JRI_STUB_CFILES): used to generate/regenerate JRI stub files for "C" $(JNI_HEADERS): used to generate/regenerate JNI header files for "C" The fourth section of "rules.mk" primarily contains miscellaneous build rules for binary releases. Many of these rules are here to create new subdirectories, manage dependencies, and/or override standard gmake "Makefile" rules. The rules which dwell in this section and their purpose: CATEGORY/rule:: Purpose =================== ============================= $(PUBLIC_EXPORT_DIR):: create directory used to house public "C" header files $(PRIVATE_EXPORT_DIR):: create directory used to house private "C" header files $(SOURCE_XP_DIR)/ release/include:: create directory used to house "C" header files contained in a release $(MKDEPENDENCIES):: for UNIX systems, create a directory used to house dependencies and utilize the $(MKDEPEND) rule to create them $(MKDEPEND):: cd to the dependency directory and create them depend:: if $(OBJS) exist, perform the $(MKDEPEND) rule followed by the $(MKDEPENDENCIES) rule dependclean:: remove all files contained in the dependency repository .DEFAULT: standard gmake rule .SUFFIXES: standard gmake rule .PRECIOUS: standard gmake rule .PHONY: standard gmake rule