Commit graph

239 commits

Author SHA1 Message Date
Richard Levitte
2fce15b58b Ensure configured module specific and application specific defines are used
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8220)
2019-02-27 11:32:14 +01:00
Kurt Roeckx
32d40d0d89 Make sure that generated POD files are actually created before we run doc-nits
Reviewed-by: Richard Levitte <levitte@openssl.org>
GH: #8285
2019-02-21 22:18:28 +01:00
Michael Haubenwallner
fa63e45262 Windows/Cygwin dlls need the executable bit set
CLA: trivial

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8226)
2019-02-13 20:00:28 +01:00
Richard Levitte
dff298135b Rework build: small correction in unix-Makefile.tmpl
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8162)
2019-02-11 16:50:47 +01:00
Richard Levitte
1842f369e5 ENGINE modules aren't special, so call them MODULES
The only thing that makes an ENGINE module special is its entry
points.  Other than that, it's a normal dynamically loadable module,
nothing special about it.  This change has us stop pretending anything
else.

We retain using ENGINE as a term for installation, because it's
related to a specific installation directory, and we therefore also
mark ENGINE modules specifically as such with an attribute in the
build.info files.

Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/8147)
2019-02-11 16:03:46 +01:00
Sam Roberts
df4439186f Remove unnecessary trailing whitespace
Trim trailing whitespace. It doesn't match OpenSSL coding standards,
AFAICT, and it can cause problems with git tooling.

Trailing whitespace remains in test data and external source.

Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8092)
2019-02-05 16:25:11 +01:00
Richard Levitte
994e86a9ff Build: use attributes to indicate installed script classes
We have two classes of scripts to be installed, those that are
installed as "normal" programs, and those that are installed as "misc"
scripts.  These classes are installed in different locations, so the
build file templates must pay attention.

Because we didn't have the tools to indicate what scripts go where, we
had these scripts hard coded in the build template files, with the
maintenance issues that may cause.  Now that we have attributes, those
can be used to classify the installed scripts, and have the build file
templates simply check the attributes to know what's what.

Furthermore, the 'tsget.pl' script exists both as 'tsget.pl' and
'tsget', which is done by installing a symbolic link (or copy).  This
link name is now given through an attribute, which results in even
less hard coding in the Unix Makefile template.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7581)
2019-01-22 12:35:39 +01:00
Richard Levitte
ac6bba6f6e Build: Change all _NO_INST to use attributes instead.
This means that all PROGRAMS_NO_INST, LIBS_NO_INST, ENGINES_NO_INST
and SCRIPTS_NO_INST are changed to be PROGRAM, LIBS, ENGINES and
SCRIPTS with the associated attribute 'noinst'.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7581)
2019-01-22 12:35:39 +01:00
Richard Levitte
9dd4ed28eb Rework building: Unix changes to handle extensions and product names
Add platform::Unix, which is a generic Unix module to support product
name and extensions functionlity.  However, this isn't quite enough,
as mingw and Cygwin builds are done using the same templates, but
since shared libraries work as on Windows and are named accordingly,
platform::mingw and platform::Cygwin were also added to provide the
necessary tweaks.

This reworks Configurations/unix-Makefile.tmpl to work out product
names in platform::Unix et al terms.  In this one, we currently do
care about the *_extension config attributes, and the modules adapt
accordingly where it matters.

This change also affected crypto/include/internal/dso_conf.h.in, since
the DSO extension is meant to be the same as the short shared library
extension, which isn't '.so' everywhere.

'shared_extension' attributes that had the value
'.so.\$(SHLIB_VERSION_NUMBER)' are removed, platform::Unix provides
an extension where the shared library version number is hard-coded
instead.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7473)
2019-01-21 19:31:32 +01:00
Richard Levitte
539ea812c7 Configuration: $config{shlib_version_number} -> $config{shlib_version}
This was forgotten in a few places

Fixes #7862

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7865)
2018-12-11 10:34:53 +01:00
Dr. Matthias St. Pierre
16942e081e Configure: fix the version string in the configure output
Since `$config{version}` and `$config{version_num}` were removed
in commit 3a63dbef15, the configure output displays an empty
version number string in parentheses instead of the version number.

This pull request fixes that by adding new config variables
`version` and `full_version`, analogous to `OPENSSL_VERSION_STR`
and `OPENSSL_FULL_VERSION_STR`.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7841)
2018-12-07 17:45:49 +01:00
Richard Levitte
3a63dbef15 Switch to MAJOR.MINOR.PATCH versioning and version 3.0.0-dev
We're strictly use version numbers of the form MAJOR.MINOR.PATCH.
Letter releases are things of days past.

The most central change is that we now express the version number with
three macros, one for each part of the version number:

    OPENSSL_VERSION_MAJOR
    OPENSSL_VERSION_MINOR
    OPENSSL_VERSION_PATCH

We also provide two additional macros to express pre-release and build
metadata information (also specified in semantic versioning):

    OPENSSL_VERSION_PRE_RELEASE
    OPENSSL_VERSION_BUILD_METADATA

To get the library's idea of all those values, we introduce the
following functions:

    unsigned int OPENSSL_version_major(void);
    unsigned int OPENSSL_version_minor(void);
    unsigned int OPENSSL_version_patch(void);
    const char *OPENSSL_version_pre_release(void);
    const char *OPENSSL_version_build_metadata(void);

Additionally, for shared library versioning (which is out of scope in
semantic versioning, but that we still need):

    OPENSSL_SHLIB_VERSION

We also provide a macro that contains the release date.  This is not
part of the version number, but is extra information that we want to
be able to display:

    OPENSSL_RELEASE_DATE

Finally, also provide the following convenience functions:

    const char *OPENSSL_version_text(void);
    const char *OPENSSL_version_text_full(void);

The following macros and functions are deprecated, and while currently
existing for backward compatibility, they are expected to disappear:

    OPENSSL_VERSION_NUMBER
    OPENSSL_VERSION_TEXT
    OPENSSL_VERSION
    OpenSSL_version_num()
    OpenSSL_version()

Also, this function is introduced to replace OpenSSL_version() for all
indexes except for OPENSSL_VERSION:

    OPENSSL_info()

For configuration, the option 'newversion-only' is added to disable all
the macros and functions that are mentioned as deprecated above.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7724)
2018-12-06 12:24:47 +01:00
Richard Levitte
b741f153b2 Make sure to run util/mktar.sh from the source directory
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/7696)
2018-11-24 18:40:31 +01:00
Richard Levitte
8d9535ec3e Remove all 'make dist' artifacts
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7692)
2018-11-23 12:40:32 +01:00
Richard Levitte
9694ebf753 Unix build: for mingw and cygwin, create the right location for DLLs
Mingw and Cygwin builds install the DLLs in the application directory,
not the library directory, so ensure that one is created for them when
installing the DLLs.

Fixes #7653

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7654)
2018-11-19 10:26:48 +01:00
Richard Levitte
e8d01a6087 Have install targets depend on more precise build targets
We only had the main 'install' target depend on 'all'.  This changes
the dependencies so targets like install_dev, install_runtime_libs,
install_engines and install_programs depend on build targets that are
correspond to them more specifically.  This increases the parallel
possibilities.

Fixes #7466

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7583)
2018-11-08 23:23:46 +01:00
Richard Levitte
c1123d9f7e Allow parallel install
When trying 'make -j{n} install', you may occasionally run into
trouble because to sub-targets (install_dev and install_runtime) try
to install the same shared libraries.  That makes parallel install
difficult.

This is solved by dividing install_runtime into two parts, one for
libraries and one for programs, and have install_dev depend on
install_runtime_libs instead of installing the shared runtime
libraries itself.

Fixes #7466

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7583)
2018-11-08 23:23:46 +01:00
Richard Levitte
25628ab2ba Build: adapt Unix Makefile template to use the extra macros
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7553)
2018-11-05 08:13:04 +01:00
Richard Levitte
b6e660754c Configuration: when building the dirinfo structure, include shared_sources
This makes sure that any resulting directory target in the build files
also depend on object files meant for shared libraries.

As a side effect, we move the production of the dirinfo structure from
common.tmpl to Configure, to make it easier to check the result.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7452)
2018-10-31 15:46:36 +01:00
Richard Levitte
d8cac50b02 build file templates: have targets for all shared library names
We only had targets for the "simple" shared library names (libfoo.so
and not libfoo.so.x.y on Unix, import library libfoo.lib but not
libfoo.dll on Windows).  This has created some confusion why it wasn't
possible to rebuild the less "simple" name directly (just as an
example, someone who mistook the import library on Windows for a
static library, removed the DLL and then found it was difficult to
rebuild directly), so we change the target to include all possible
names.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7451)
2018-10-21 15:47:06 +02:00
Richard Levitte
92ebf6c4c2 Build file templates: look at *all* defines
When looking at configured macro definitions, we must look at both
what comes from the config target AND what comes from user
configuration.

Fixes #7396

Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/7402)
2018-10-17 10:57:17 +02:00
Richard Levitte
66a24ab868 Add build file support for generic symbol exports with DSOs
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7347)
2018-10-05 08:22:42 +02:00
Richard Levitte
30699aa194 Refactor util/mknum.pl for clearer separation of functionality
Rewrite util/mknum.pl to become cleaner, and to use the separate
generic C header parsing module, as well as the separate ordinals
manipulation module.
Adapt the build files.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)
2018-10-04 12:45:40 +02:00
Richard Levitte
8effd8fa67 Refactor util/mkdef.pl for clearer separation of functionality
Move the .num updating functionality to util/mknum.pl.
Rewrite util/mkdef.pl to create .def / .map / .opt files exclusively,
using the separate ordinals reading module.
Adapt the build files.
Adapt the symbol presence test.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7191)
2018-10-03 22:16:10 +02:00
Richard Levitte
ef2dfc9902 Refactor linker script generation
The generation of linker scripts was badly balanced, as all sorts of
platform dependent stuff went into the top build.info, when that part
should really be made as simply and generic as possible.

Therefore, we move a lot of the "magic" to the build files templates,
since they are the place for platform dependent things.  What remains
is to parametrize just enough in the build.info file to generate the
linker scripts correctly for each associated library.

"linker script" is a term usually reserved for certain Unix linkers.
However, we only use them to say what symbols should be exported, so
we use the term loosely for all platforms.  The internal extension is
'.ld', and is changed by the build file templates as appropriate for
each target platform.

Note that this adds extra meaning to the value of the shared_target
attribute.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7333)
2018-10-01 09:49:16 +02:00
Richard Levitte
f619622715 VMS: stop trying to build shared libraries from static ones
The possibility to do this was killed when we started producing object
file names with encoded intention (and possibly different builds), and
leads to build errors.

With that, 'libobj2shlib' is renamed to 'obj2shlib' to reflect this
design change.  The old name is still used if the new one isn't
available, for the sake of backward compatibility.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7198)
2018-09-13 00:41:21 +02:00
Richard Levitte
9dfc868025 Build files: Separate 'lib' intent from 'shlib' intent
This is in preparation for having separate CFLAGS variables for static
and for shared library builds.

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7159)
2018-09-12 01:59:46 +02:00
Andy Polyakov
d573ff1793 Configurations/unix-Makefile.tmpl: address find portability issue.
-path is non-portable extension, fortunately it's possible to express
.git subdirectory exclusion with -prune.

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7004)
2018-08-24 18:56:24 +02:00
Richard Levitte
d8356e1b0f Make sure the 'tsget' script is called 'tsget.pl' everywhere
The result is that we don't have to produce different names on
different platforms, and we won't have confusion on Windows depending
on if the script was built with mingw or with MSVC.

Partial fix for #3254

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6764)
2018-07-23 18:33:48 +02:00
Richard Levitte
9e26532295 Keep supporting the env / make variable PERL
OpenSSL 1.1.0 supports the use of this environment variable for
passing to the build files.  For the sake of backward compatibility,
we keep it.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/6668)
2018-07-09 09:21:36 +02:00
Andy Polyakov
cff89b179c Configurations/unix-Makefile.tmpl: switch to "natural" AIX shared libraries.
AIX treats its shared libraries in unique manner, by placing multiple
shared objects of different versions and bitnesses, into .a file.
So far we have been naively linking with version-less libcrypto|ssl.so,
which poses long-term maintenance problems. One could choose to link
straight with libcrypto.so.X.Y [or libcrypto.X.Y.so], but it would be
inconsistent with the way AIX [or Unix] does things.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6487)
2018-06-22 10:57:01 +02:00
Dr. Matthias St. Pierre
c4fad5d348 Improve the output of make doc-nits
- Print positive feedback in the case when 'make doc-nits' finds no errors.
- Other than before, keep the 'doc-nits' output file only in case of errors
  and remove it if it is empty.
- Declare 'doc-nits' as a phony make target to facilitate rerunning
  'make doc-nits' without having to remove the output file first.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6517)
2018-06-19 17:13:03 +02:00
Richard Levitte
aa6cc8d33c make errors: use the new util/ck_errf.pl options
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6461)
2018-06-12 12:31:45 +02:00
Andy Polyakov
06444da464 Configurations/unix-Makefile.tmpl: harmonize with no-engine.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6106)
2018-04-29 21:39:00 +02:00
Richard Levitte
918388b5a0 Don't distribute team internal config targets
Configurations/90-team.conf isn't for public consumption, so we rename
it to 90-team.norelease.conf and make sure 'make dist' and 'make tar'
don't include it in the tarball.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5836)
2018-04-19 15:02:19 +02:00
Bernd Edlinger
b0a97931fb Remove mandatory generated files too
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5951)
2018-04-15 08:13:38 +02:00
Bernd Edlinger
49bb4dd049 Fix cygwin make dependencies
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5951)
2018-04-15 08:13:37 +02:00
Andy Polyakov
18d1588268 Configurations/*.tmpl: refine build_all_generated.
Purpose of build_all_generated is to execute all the rules that require
perl, so that one can copy the tree to system with compiler but without
perl. This commit removes last dependencies on perl.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5929)
2018-04-12 14:58:53 +02:00
Richard Levitte
8258975c94 Configuration: Simplify generating list of generated files in build file templates
Computing the value of the GENERATED variable in the build file
templates is somewhat overcomplicated, and because of possible
duplication errors, changes are potentially error prone.

Looking more closely at how this list is determined, it can be
observed that the exact list of files to check is consistently
available in all the values found in the %unified_info tables
'depends', 'sources' and 'shared_sources', and all that's needed is to
filter those values so only those present as keys in the 'generate'
table are left.

This computation is also common for all build files, so due to its
apparent complexity, we move it to common0.tmpl, with the result left
in a global variable (@generated), to be consumed by all build file
templates.

common0.tmpl is included among the files to process when creating
build files, but unlike common.tmpl, it comes first of all.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5930)
2018-04-11 20:52:14 +02:00
Bernd Edlinger
5283e19f11 Fix the build_all_generated rule to include generated .map, .def and .opt files
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5900)
2018-04-08 17:20:01 +02:00
Richard Levitte
d3f9268aa5 Don't use CPP in Configurations/unix-Makefile.tmpl
We started using $(CPP) instead of $(CC) -E, with the assumption that
CPP would be predefined.  This is, however, not always true, and
rather depends on the 'make' implementation.  Furthermore, on
platforms where CPP=cpp or something else other than '$(CC) -E',
there's a risk that it won't understand machine specific flags that we
pass to it.  So it turns out that trying to use $(CPP) was a mistake,
and we therefore revert that use back to using $(CC) -E directly.

Fixes #5867

Note: this affects config targets that use Alpha, ARM, IA64, MIPS,
s390x or SPARC assembler modules.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5872)
2018-04-04 16:44:45 +02:00
Richard Levitte
29f3cfddab Configurations/unix-Makefile.tmpl: fix inconsistencies with resource files
.res files weren't treated consistently.  They weren't included at all
in the build of a shared library, and were named inconsistently; .res
sometimes, and .res.o otherwise.  Now we standardise it to .res.o,
which is the recommended way with GNU tools.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5730)
2018-03-22 22:36:49 +01:00
Richard Levitte
c39785d4e6 Move all dependency post-processing to util/add-depends.pl
In the end, it's more efficient to only have one perl instance (that
loads configdata.pm) dealing with dependency files than running one
(that still loads configdata.pm) for each such file.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5631)
2018-03-16 09:33:53 +01:00
Richard Levitte
bbb9413b7e Streamline dependency generation
It seems that only gcc -MMD produces dependency files that are "sane"
for our needs.  For all other methods, some post processing is needed:

- 'makedepend' (Unix) insists that object files are located in the
  same spot as the source file.
- 'cl /Zs /showIncludes' (Visual C) has "Note: including file: " where
  we'd like to see the object.
- 'CC/DECC' (VMS) insists that the object file is located in the
  current directory, i.e. it strips away all directory information.

So far, we've managed this (except for the VMS case) with individual
uncommented perl command lines directly in the build file template.
We're now collecting these diverse hacks into one perl script that
takes an argument to tell what kind of input to expect and that
massages whatever it gets on STDIN and outputs the result on STDOUT.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5591)
2018-03-15 15:21:52 +01:00
Richard Levitte
249b4e28a6 Refactor the 'depend' target
With the help of the perl script util/add-depends.pl, which takes all
its information directly from configdata.pm, the dependency adding
procedure can be streamlined for all support platforms.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5606)
2018-03-13 19:24:26 +01:00
Andy Polyakov
a23f03166e Configurations/unix-Makefile.tmpl: overhaul assembler make rules.
So far assembly modules were built as .pl->.S->.s followed by .s->.o.
This posed a problem in build_all_generated rule if it was executed
on another computer. So we change rule sequence to .pl->.S and then
.S->.s->.o.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5573)
2018-03-10 15:38:50 +01:00
Richard Levitte
58d6be5b5d Display the library building flags
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5560)
2018-03-09 14:07:59 +01:00
Michael Richardson
9967a9edbe Reduce travis-ci log output
Travis-ci log output is huge and overflows internal travis-ci view,
which makes it hard to find errors.
Redirect some output to a file and dump it only if it fails.
Remove "v" option from tar that builds and extracts the srcdist.
While running the tests manually, some non-POSIX (bashisms) with ==
vs = came to light.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5555)
2018-03-08 21:18:35 +01:00
Richard Levitte
150624bcf5 Configure et al: get rid of last traces of plib_lflags / PLIB_LDFLAGS
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5534)
2018-03-08 17:24:02 +01:00
Richard Levitte
abe256e795 Make "make variables" config attributes for overridable flags
With the support of "make variables" comes the possibility for the
user to override them.  However, we need to make a difference between
defaults that we use (and that should be overridable by the user) and
flags that are crucial for building OpenSSL (should not be
overridable).

Typically, overridable flags are those setting optimization levels,
warnings levels, that kind of thing, while non-overridable flags are,
for example, macros that indicate aspects of how the config target
should be treated, such as L_ENDIAN and B_ENDIAN.

We do that differentiation by allowing upper case attributes in the
config targets, named exactly like the "make variables" we support,
and reserving the lower case attributes for non-overridable project
flags.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5534)
2018-03-08 17:24:02 +01:00