74e574c8a6
Meson does not allow to pass CFLAGS/LDFLAGS/CXXFLAGS via the environment or via command-line arguments or options (instead, those flags from the environment are passed to the host compiler, which is seldom what we need). The only way to pas those flags is via the cross-compilation.conf file. Add LIBFOO_CFLAGS, LIBFOO_LDFLAGS and LIBFOO_CXXFLAGS variables to allow packages to provide their own flags, possibly overriding the generic ones entirely, as we allow for other infras. Those per-package flags will then be used to generate the per-package cross-compilation.conf. This means that the meson infra is the first and only infra for which FOO_CFLAGS, FOO_LDFLAGS, and FOO_CXXFLAGS are meaningful, while for the other infras, they are just variables private to the package itself. Instead of naming those variables after the meson infra (e.g. FOO_MESON_CFLAGS), we name them with a generic name, as maybe, just maybe, we could also change the other infras to also recognise those variables. Just like for the HOST_MESON_SED_CFLAGS etc., we need to add auxiliary variables to do convert the shell-formatted argument list into the JSON-formatted list that meson expects. We can't use a pure-make construct because the CFLAGS can contain quoting that needs to be expanded by the shell. Similarly, we need a condition on the strip'ed variable to avoid passing empty arguments. To mimic this feature for packages that are built from the SDK, we also install a templatised version of cross-compilation.conf, with three new placeholders for custom flags. If a user wants to build a package that needs custom flags, they can use that template to generate a per-package cross-compilation.conf. Signed-off-by: Peter Seiderer <ps.report@gmx.net> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> Cc: Adam Duskett <aduskett@gmail.com> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Tested-by: Peter Seiderer <ps.report@gmx.net> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
178 lines
6 KiB
Makefile
178 lines
6 KiB
Makefile
################################################################################
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# Meson package infrastructure
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#
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# This file implements an infrastructure that eases development of
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# package .mk files for Meson packages. It should be used for all
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# packages that use Meson as their build system.
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#
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# See the Buildroot documentation for details on the usage of this
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# infrastructure
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#
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# In terms of implementation, this Meson infrastructure requires
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# the .mk file to only specify metadata information about the
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# package: name, version, download URL, etc.
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#
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# We still allow the package .mk file to override what the different
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# steps are doing, if needed. For example, if <PKG>_BUILD_CMDS is
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# already defined, it is used as the list of commands to perform to
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# build the package, instead of the default Meson behaviour. The
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# package can also define some post operation hooks.
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#
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################################################################################
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#
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# Pass PYTHONNOUSERSITE environment variable when invoking Meson or Ninja, so
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# $(HOST_DIR)/bin/python3 will not look for Meson modules in
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# $HOME/.local/lib/python3.x/site-packages
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#
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MESON = PYTHONNOUSERSITE=y $(HOST_DIR)/bin/meson
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NINJA = PYTHONNOUSERSITE=y $(HOST_DIR)/bin/ninja
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NINJA_OPTS = $(if $(VERBOSE),-v) -j$(PARALLEL_JOBS)
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################################################################################
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# inner-meson-package -- defines how the configuration, compilation and
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# installation of a Meson package should be done, implements a few hooks to
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# tune the build process and calls the generic package infrastructure to
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# generate the necessary make targets
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#
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# argument 1 is the lowercase package name
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# argument 2 is the uppercase package name, including a HOST_ prefix
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# for host packages
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# argument 3 is the uppercase package name, without the HOST_ prefix
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# for host packages
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# argument 4 is the type (target or host)
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################################################################################
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define inner-meson-package
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$(2)_CONF_ENV ?=
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$(2)_CONF_OPTS ?=
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$(2)_NINJA_ENV ?=
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#
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# Configure step. Only define it if not already defined by the package
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# .mk file. And take care of the differences between host and target
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# packages.
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#
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ifndef $(2)_CONFIGURE_CMDS
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ifeq ($(4),target)
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$(2)_CFLAGS ?= $$(TARGET_CFLAGS)
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$(2)_LDFLAGS ?= $$(TARGET_LDFLAGS)
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$(2)_CXXFLAGS ?= $$(TARGET_CXXFLAGS)
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$(2)_MESON_SED_CFLAGS = $$(if $$(strip $$($(2)_CFLAGS)),`printf '"%s"$$(comma) ' $$($(2)_CFLAGS)`)
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$(2)_MESON_SED_LDFLAGS = $$(if $$(strip $$($(2)_LDFLAGS)),`printf '"%s"$$(comma) ' $$($(2)_LDFLAGS)`)
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$(2)_MESON_SED_CXXFLAGS = $$(if $$(strip $$($(2)_CXXFLAGS)),`printf '"%s"$$(comma) ' $$($(2)_CXXFLAGS)`)
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# Configure package for target
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#
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#
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define $(2)_CONFIGURE_CMDS
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rm -rf $$($$(PKG)_SRCDIR)/build
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mkdir -p $$($$(PKG)_SRCDIR)/build
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sed -e "s%@TARGET_CROSS@%$$(TARGET_CROSS)%g" \
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-e "s%@TARGET_ARCH@%$$(HOST_MESON_TARGET_CPU_FAMILY)%g" \
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-e "s%@TARGET_CPU@%$$(GCC_TARGET_CPU)%g" \
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-e "s%@TARGET_ENDIAN@%$$(call LOWERCASE,$$(BR2_ENDIAN))%g" \
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-e "s%@TARGET_CFLAGS@%$$($(2)_MESON_SED_CFLAGS)%g" \
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-e "s%@TARGET_LDFLAGS@%$$($(2)_MESON_SED_LDFLAGS)%g" \
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-e "s%@TARGET_CXXFLAGS@%$$($(2)_MESON_SED_CXXFLAGS)%g" \
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-e "s%@HOST_DIR@%$$(HOST_DIR)%g" \
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package/meson/cross-compilation.conf.in \
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> $$($$(PKG)_SRCDIR)/build/cross-compilation.conf
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PATH=$$(BR_PATH) $$($$(PKG)_CONF_ENV) $$(MESON) \
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--prefix=/usr \
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--libdir=lib \
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--default-library=$(if $(BR2_STATIC_LIBS),static,shared) \
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--buildtype=$(if $(BR2_ENABLE_DEBUG),debug,release) \
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--cross-file=$$($$(PKG)_SRCDIR)/build/cross-compilation.conf \
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$$($$(PKG)_CONF_OPTS) \
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$$($$(PKG)_SRCDIR) $$($$(PKG)_SRCDIR)/build
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endef
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else
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# Configure package for host
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define $(2)_CONFIGURE_CMDS
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rm -rf $$($$(PKG)_SRCDIR)/build
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mkdir -p $$($$(PKG)_SRCDIR)/build
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$$(HOST_CONFIGURE_OPTS) \
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$$($$(PKG)_CONF_ENV) $$(MESON) \
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--prefix=$$(HOST_DIR) \
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--libdir=lib \
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--sysconfdir=$$(HOST_DIR)/etc \
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--localstatedir=$$(HOST_DIR)/var \
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--default-library=shared \
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--buildtype=release \
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$$($$(PKG)_CONF_OPTS) \
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$$($$(PKG)_SRCDIR) $$($$(PKG)_SRCDIR)/build
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endef
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endif
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endif
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$(2)_DEPENDENCIES += host-meson
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#
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# Build step. Only define it if not already defined by the package .mk
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# file.
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#
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ifndef $(2)_BUILD_CMDS
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ifeq ($(4),target)
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define $(2)_BUILD_CMDS
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$$(TARGET_MAKE_ENV) $$($$(PKG)_NINJA_ENV) \
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$$(NINJA) $$(NINJA_OPTS) $$($$(PKG)_NINJA_OPTS) -C $$($$(PKG)_SRCDIR)/build
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endef
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else
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define $(2)_BUILD_CMDS
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$$(HOST_MAKE_ENV) $$($$(PKG)_NINJA_ENV) \
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$$(NINJA) $$(NINJA_OPTS) $$($$(PKG)_NINJA_OPTS) -C $$($$(PKG)_SRCDIR)/build
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endef
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endif
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endif
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#
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# Host installation step. Only define it if not already defined by the
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# package .mk file.
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#
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ifndef $(2)_INSTALL_CMDS
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define $(2)_INSTALL_CMDS
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$$(HOST_MAKE_ENV) $$($$(PKG)_NINJA_ENV) \
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$$(NINJA) $$(NINJA_OPTS) -C $$($$(PKG)_SRCDIR)/build install
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endef
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endif
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#
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# Staging installation step. Only define it if not already defined by
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# the package .mk file.
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#
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ifndef $(2)_INSTALL_STAGING_CMDS
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define $(2)_INSTALL_STAGING_CMDS
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$$(TARGET_MAKE_ENV) $$($$(PKG)_NINJA_ENV) DESTDIR=$$(STAGING_DIR) \
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$$(NINJA) $$(NINJA_OPTS) -C $$($$(PKG)_SRCDIR)/build install
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endef
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endif
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#
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# Target installation step. Only define it if not already defined by
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# the package .mk file.
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#
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ifndef $(2)_INSTALL_TARGET_CMDS
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define $(2)_INSTALL_TARGET_CMDS
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$$(TARGET_MAKE_ENV) $$($$(PKG)_NINJA_ENV) DESTDIR=$$(TARGET_DIR) \
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$$(NINJA) $$(NINJA_OPTS) -C $$($$(PKG)_SRCDIR)/build install
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endef
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endif
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# Call the generic package infrastructure to generate the necessary
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# make targets
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$(call inner-generic-package,$(1),$(2),$(3),$(4))
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endef
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################################################################################
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# meson-package -- the target generator macro for Meson packages
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################################################################################
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meson-package = $(call inner-meson-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
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host-meson-package = $(call inner-meson-package,host-$(pkgname),$(call UPPERCASE,host-$(pkgname)),$(call UPPERCASE,$(pkgname)),host)
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