For some systems (i.e. FreeBSD) the default 'make' is not compatible with the
GNU extensions used by QEMU makefiles.
Calling the GNU make (gmake) works, however the help displayed refers to the
host 'make' and copy/paste leads to lot of unobvious errors:
$ gmake check-help
[...]
make check Run all tests
$ make check
make: "Makefile" line 28: Missing dependency operator
make: "Makefile" line 37: Need an operator
make: "Makefile" line 41: warning: duplicate script for target "git-submodule-update" ignored
make: "rules.mak" line 70: warning: duplicate script for target "%.o" ignored
make: Unknown modifier ' '
make: Unclosed substitution for eval modules (= missing)
make: "tests/Makefile.include" line 24: Variable/Value missing from "export"
make: "tests/" line 1: warning: Zero byte read from file, skipping rest of line.
make: "tests/" line 1: Need an operator
make: "Makefile" line 660: warning: duplicate script for target "ifneq" ignored
make: "Makefile" line 78: warning: using previous script for "ifneq" defined here
make: Fatal errors encountered -- cannot continue
Using the $(MAKE) variable, the help displayed is consistent with the 'make'
program used.
Backports commit b98a3bae2596fd9bf60f140d042c8e993daba930 from qemu
Mandatory option is silly, and the error handling is missing: the
programs crash when -i isn't supplied. Make it an argument, and check
it properly.
Backports commit 16d80f61814745bd3f5bb9f47ae3b00edf9e1e45 from qemu
Future patches will be adding more crypto related APIs which
rely on QOM infrastructure. This creates a problem, because
QOM relies on library constructors to register objects. When
you have a file in a static .a library though which is only
referenced by a constructor the linker is dumb and will drop
that file when linking to the final executable :-( The only
workaround for this is to link the .a library to the executable
using the -Wl,--whole-archive flag, but this creates its own
set of problems because QEMU is relying on lazy linking for
libqemuutil.a. Using --whole-archive majorly increases the
size of final executables as they now contain a bunch of
object code they don't actually use.
The least bad option is to thus not include the crypto objects
in libqemuutil.la, and instead define a crypto-obj-y variable
that is referenced directly by all the executables that need
this code (tools + softmmu, but not qemu-ga). We avoid pulling
entire of crypto-obj-y into the userspace emulators as that
would force them to link to gnutls too, which is not required.
Backports commit fb37726db77b21f3731b90693d2c93ade1777528 from qemu
