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)
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)
HP-UX provides sockets symbols with incompatible prototypes under same
name. This caused problems in 64-bit builds. Additional macros force
unambiguous symbols with unambiguous prototypes.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5742)
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)
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5625)
The LIBZ macro definition was already quoted in BASE_windows, then got
quotified once more in windows-makefile.tmpl. That's a bit too much
quotations, ending up with the compiler being asked to define the
macro |"LIBZ=\"ZLIB1\""| (no, not the macro LIBZ with the value
"ZLIB1"). This is solved by removing the extra quoting in
BASE_windows.
Along with this, change the quotation of macro definitions and include
file specification, so we end up with things like -I"QuotedPath" and
-D"Macro=\"some weird value\"" rather than "-IQuotedPath" and
"-DMacro=\"some weird value\"".
Fixes#5827
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5833)
picker() is type agnostic, but its output consumer is not. Or rather
it doesn't work if picker() picks nothing when consumer expects
array. So ensure array is returned when array is expected.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5770)
This is quick-n-dirty ad-hoc solution, the problem asks for more
elegant one...
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5755)
.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)
Although it deviates from the actual prototype of DSO_dsobyaddr(), this
is now ISO C compliant and gcc -Wpedantic accepts the code.
Added DATA segment checking to catch ptrgl virtual addresses. Avoid
memleaks with every AIX/dladdr() call. Removed debug-fprintf()s.
Added test case for DSO_dsobyaddr(), which will eventually call dladdr().
Removed unecessary AIX ifdefs again.
The implementation can only lookup function symbols, no data symbols.
Added PIC-flag to aix*-cc build targets.
As AIX is missing a dladdr() implementation it is currently uncertain our
exit()-handlers can still be called when the application exits. After
dlclose() the whole library might have been unloaded already.
Signed-off-by: Matthias Kraft <makr@gmx.eu>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5668)
Since they intend to omit gcc, it's more appropriate to simply detect
if there is NDK's clang on PATH, as opposite to requiring to specify it
with CC=clang (and looking for it on PATH).
Also detect NDK version and default to armv7-a for NDK>16.
Address failure to recognize -D__ADNDROID_API__=N in CPPFLAGS.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5613)
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)
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)
The Debian build system uses a `debian' target which sets CFLAGS and
then we have for instance debian-amd64 which inherits from
linux-x86_64 and debian [0]. So far so good.
Unless there are different suggestions how to do this, I would keep it.
However since the target name does not start with `linux', the build
system does not enable the afalg engine. So in order to get enabled, I
added a
`enable => [ "afalgeng" ],'
to the generic linux config which sets it explicit (as suggested by
Richard Levitte). Having this set, we can check for it instead matching
the target name.
[0] https://sources.debian.org/src/openssl/1.1.0g-2/Configurations/20-debian.conf/
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5169)
We have '--strict-warnings' for this kind of stuff... also, user
flags are added last, so this overrides any warning supression
--strict-warnings may put in place (for good reasons).
Fixes#5609
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5612)
Move Android targets to separate file, automate sysroot setup and
add support for NDK 16.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5589)
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)
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)
$target{build_scheme} consists of fixed number of elements with 3rd
element denoting VC install-path "flavour", i.e. where to install things.
Instead of looking at 3rd, let's look at last. This allows to override
flavour from template in a simple way.
Configurations/10-main.conf: define generic "flavour" in VC-common
template. Since VC-W32 was the only recognized "flavour", remove
"flavour" definitions from all targets/templates, but VC-WIN32. And
rename VC-W32 to VC-WOW.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5502)
We're currently using the attributes 'defines', 'cppflags', 'cflags'
etc quite liberally, with no regard for where that ends up. Quite a
few of those flags are actually only relevant for the libraries
(mostly libcrypto), so it's safe to say that those could be applied to
the libraries only.
So, we move some of those flags to 'lib_defines', 'lib_cppflags',
'lib_cflags', etc.
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5560)
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)
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)
Because there are already attributes with the dso_ prefix that are
used instead of the corresponding lib_ attributes rather than in
addition to them, it gets confusing to have similar or exactly the
same attributes working with different semantics on Unix.
So we rename those by changing the prefix dso_ to module_, and having
those work just like the shared_ attributes, but for DSOs.
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5534)
We have never used these variables with the Unix Makefile, and there's
no reason for us to change this, so to avoid confusion, we remove them.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5545)
-fno-common was removed for all Darwin targets in
0c8734198d with rationale "it's either
'ranlib -c' or '-fno-common'." However, it's still absolutely required
in 32-bit darwin-ppc-cc. And when trying things out I didn't quite
see why it was formulated as one-or-another choice, as 'ranlib -c'
shouldn't [and doesn't] have problems with object modules without
commons. [Well, to be frank, I didn't manage to reproduce the problem
the modification was meaning to resolve either...]
Reviewed-by: Rich Salz <rsalz@openssl.org>
With this, we introduce the make variable 'libdir', which differs from
'LIBDIR' not only in casing, but also by being the absolute path to
the library installation directory. This variable is intentionally
compatible with the GNU coding standards.
When --libdir is given an absolute path, it is considered as a value
according to GNU coding standards, and the variables LIBDIR and libdir
will be this:
LIBDIR=
libdir=/absolute/path
When --libdir is given a relative path (just the name of the desired
library directory), or not given at all, it is considered as a
"traditional" OpenSSL value, and the variables LIBDIR and libdir will
be this:
LIBDIR=relativepath
libdir=$(INSTALLTOP)/$(LIBDIR)
Fixes#5398
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5446)
The reason for this is that some of the C flags affect built in macros
that we may depend on.
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5436)
If the configured value is the empty string, give them a sane default.
Otherwise, give them the configured value prefix with $(CROSS_COMPILE)
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5247)
It was inconsistent to see this specific command have
'$(CROSS_COMPILE)' in its value when no other command did.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5247)
In previous OpenSSL versions, this letter was part of the make
variable AR. However, following the usual convention (read: GNU),
this letter is supposed to be part of ARFLAGS.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5386)
Avoid using crypto/modes/ghash-ia64.s, as it uses features that are
explicitely prohibited on VMS.
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5357)
The make variables LIB_CFLAGS, DSO_CFLAGS and so on were used in
addition to CFLAGS and so on. This works without problem on Unix and
Windows, where options with different purposes (such as -D and -I) can
appear anywhere on the command line and get accumulated as they come.
This is not necessarely so on VMS. For example, macros must all be
collected and given through one /DEFINE, and the same goes for
inclusion directories (/INCLUDE).
So, to harmonize all platforms, we repurpose make variables starting
with LIB_, DSO_ and BIN_ to be all encompassing variables that
collects the corresponding values from CFLAGS, CPPFLAGS, DEFINES,
INCLUDES and so on together with possible config target values
specific for libraries DSOs and programs, and use them instead of the
general ones everywhere.
This will, for example, allow VMS to use the exact same generators for
generated files that go through cpp as all other platforms, something
that has been impossible to do safely before now.
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5357)
Instead of having the knowledge of the exact flags to run the C
preprocessor only and have it output on standard output in the deeper
recesses of the build file template, make it a config parameter, or
rely on build CPP in value ('$(CC) -E' on Unix).
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/5356)
All VMS config targets were literally copies of each other, only
differing in what argument the parameter seeking function vms_info()
received (the pointer size).
This could be hugely simplified by letting vms_info() detect what
pointer size was desired from the desired config target name instead.
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5364)
It was a bit absurd to have this being specially handled in the build
file templates, especially that we have the 'includes' attribute.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5296)
Configurations/descrip.mms.tmpl didn't treat the includes config
attribute very well. In fact, it didn't treat it at all!
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5295)
If a module is disablable (i.e. can be configured with 'no-FOO'), the
resulting header file needs to be guarded with a check of the
corresponding OPENSSL_NO_FOO. While this seem fairly innocuous, it
has an impact on the information in util/*.num, generated by mkdef.pl.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5275)
Most modules are direct implementations of openssl application
sub-commands, but some constitute a support library, which can be used
by more than one program (and is, incidently, by test/uitest).
For practical purposes, we place the support library modules in a
private, static library.
Finally, there are some modules that don't have direct references in
the rest of the apps code, but are still crucial. See them as some
kind of extra crt0 or similar for your platform.
Inspiration from David von Oheimb
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5222)
For proper escaping, we need the direct perl variable values, not a
make variable reference.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5196)
C++ flags got the same config target value as C flags, but then
nothing else happened while C flags get all kinds of stuff added to
them (especially when --strict-warnings is used).
Now, C++ flags get the exact same treatment as C flags. However, this
only happens when a C++ compiler is specified, to avoid confusing
messages about added C++ flags.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5181)
vc_wince_info()->{defines} was left around, when it should be
vc_wince_info()->{cppflags}
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5182)
There were a small number that inherited no BASE, the now inherit
BASE_unix.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5177)
Ideally, each config target should inherit a base to get their
platform specific defaults. Unfortunately, that is currently not the
case, so we duplicate the Unixly defaults from the BASE_unix template
into the DEFAULT template.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5177)
Default values belong in the DEFAULT config target template, in
Configurations/00-base-templates.conf.
This isn't a complete move, but takes care of the most blatant
examples.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5177)
Support the following "make variables":
AR (GNU compatible)
ARFLAGS (GNU Compatible)
AS (GNU Compatible)
ASFLAGS (GNU Compatible)
CC (GNU Compatible)
CFLAGS (GNU Compatible)
CXX (GNU Compatible)
CXXFLAGS (GNU Compatible)
CPP (GNU Compatible)
CPPFLAGS (GNU Compatible)
CPPDEFINES List of CPP macro definitions. Alternative for -D
CPPINCLUDES List of CPP inclusion directories. Alternative for -I
HASHBANGPERL Perl invocation to be inserted after '#!' in public
perl scripts.
LDFLAGS (GNU Compatible)
LDLIBS (GNU Compatible)
RANLIB Program to generate library archive index
RC Program to manipulate Windows resources
RCFLAGS Flags for $(RC)
RM (GNU Compatible)
Setting one of these overrides the corresponding data from our config
targets. However, flags given directly on the configuration command
line are additional, and are therefore added to the flags coming from
one of the variables above or the config target.
Fixes#2420
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5177)
C preprocessor flags get separated from C flags, which has the
advantage that we don't get loads of macro definitions and inclusion
directory specs when linking shared libraries, DSOs and programs.
This is a step to add support for "make variables" when configuring.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5177)
This ensures that only one set of includes is associated with each
object file, reagardless of where it's used.
For example, if apps/build.info has this:
SOURCE[openssl]=foo.c
INCLUDE[openssl]=.. ../include
and test/build.info has this:
SOURCE[footest]=../apps/foo.c
INCLUDE[footest]=../include
The inclusion directories used for apps/foo.o would differ depending
on which program's dependencies get generated first in the build file.
With this change, all those INCLUDEs get combined into one set of
inclusion directories tied to the object file.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5153)
Since libssl requires libcrypto and libcrypto.pc already has
Libs.private set exactly the same, there's no reason to repeat it in
libssl.pc.
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/5134)
Even -pthread gets treated that way. The reason to do this is so it
ends up in 'Libs.private' in libcrypto.pc.
Fixes#3884
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/5134)
So far, we've placed all extra library related flags together, ending
up in the make variable EX_LIBS. This turns out to be problematic, as
for example, some compilers don't quite agree with something like
this:
cc -o foo foo.o -L/whatever -lsomething
They prefer this:
cc -L/whatever -o foo foo.o -lsomething
IBM's compiler on OS/390 is such a compiler that we know of, and we
have previously handled that as a previous case.
The answer here is to make a more general solution, where linking
options are divided in two parts, where one ends up in LDFLAGS and
the other in EX_LIBS (they corresponds to what is called LDFLAGS and
LDLIBS in the GNU world)
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5033)
The uClinux targets included some attributes that would result in
circular references of CFLAGS and LDCLAGS.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5034)
Similar to commit 17b602802114d53017ff7894319498934a580b17(
"Remove extra `the` in SSL_SESSION_set1_id.pod"), this commit removes
typos where additional 'the' have been added.
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4999)
Following the changes that removed Makefile.shared, we also changed
the generation of .def / .map / .opt files from ordinals more
explicit, removing the need to the "magic" ORDINALS declaration.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4993)
The simplifications that were made when Makefile.shared was removed
didn't work quite right. Also, this is what we do on Unix and Windows
anyway, so this makes us more consistent across all platforms.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4982)
Ignore libssl.map/libcrypto.map instead of ssl.map/crypto.map
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4932)
Remove some config attributes that just duplicate values that are
already there in other attributes.
Remove the special runs of mkdef.pl and mkrc.pl from build file
templates, as these are now done via GENERATE statements in
build.info.
Remove all references to ordinal files from build file templates, as
these are now treated via the GENERATE statements in build.info.
Also remove -shared flags and similar that are there in shared-info.pl
anyway. (in the case of darwin, it's mandatory, as -bundle and
-dynamiclib don't mix)
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4840)
Because this also includes handling all sorts of non-object files when
linking a program, shared library or DSO, this also includes allowing
general recognition of files such as .res files (compiled from .rc
files), or .def / .map / .opt files (for export and possibly
versioning of public symbols only).
This does mean that there's a tangible change for all build file
templates: they must now recognise and handle the `.o` extension,
which is used internally to recognise object files internally. This
extension was removed by common.tmpl before this change, but would
mean that the platform specific templates wouldn't know if "foo.map"
was originally "foo.map.o" (i.e. an object file in its own right) or
"foo.map" (an export definition file that should be treated as such,
not as an object file).
For the sake of simplifying things, we also modify util/mkdef.pl to
produce .def (Windows) and .opt (VMS) files that don't need additional
hackery.
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4840)
This will replace the use of Makefile.shared
This also means a small adjustment on how the attributes dso_cflags,
dso_cxxflags and dso_lflags are treated. They were previously treated
as an extension to shared_cflag, shared_cxxflag and shared_ldflag, but
they should really be regarded as alternatives instead, for example
for darwin, where -dynamiclib is used for shared libraries and -bundle
for DSOs.
We take the opportunity to clean out things that are redundant or
otherwise superfluous (for example the check of GNU ld on platforms
where it never existed).
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4840)
