kumquat-buildroot/package/gobject-introspection/gobject-introspection.mk
Adam Duskett 7687a396e8 package/gobject-introspection: new package
GObject introspection is a middleware layer between C
libraries (using GObject) and language bindings. The C library
can be scanned at compile time and generate a metadata file,
in addition to the actual native C library. Then at runtime,
language bindings can read this metadata and automatically
provide bindings to call into the C library.

There's an XML format called GIR used by GObject-Introspection.
The purpose of it is to provide a standard structure to access the complete
available API that a library or other unit of code exports. It's
language-agnostic using namespaces to separate core, language, or
library-specific functionality.

Cross-compiling gobject-introspection is not an easy task. The main issue is
that in the process of creating the XML files, gobject-introspection must first
run and scan the binary, which, if the binary is cross-compiled, would not
typically be possible from the host system.

Because of this limitation, we use several wrappers to call instead first out
qemu, which runs the native scanner to create the binaries.

There are seven total patches and four different wrapper files needed to
successfully cross-compile and run this package, many of them are from
open-embedded, but one of them is of my own doing.

1) Revert a previous, incomplete attempt at adding cross-compiling support.

2) Add support for cross-compiling with meson.

3) Disable tests.

4) Add an option to use a binary wrapper; this patch will force giscanner to
   use a wrapper executable to run binaries it's producing, instead of
   attempting to run them from the host.

5) Add an option to use an LDD wrapper, again, useful for cross-compiled
   environments.

6) Add a --lib-dirs-envar option to pass to giscanner. (See patch for details.)

7) Add rpath-links to ccompiler: when passing the PACKAGE_GIR_EXTRA_LIBS_PATH
   to the ccompiler.py script, ccompiler.py needs to add -Wl,-rpath-link to the
   environment for the package to correctly link against the passed on paths.

8) Ignore error return codes from ldd-wrapper because prelink-rtld returns 127
   when it can't find a library, which breaks subprocess.check_output().

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
Tested-by: Yegor Yefremov <yegorslists@googlemail.com>
Tested-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
[yann.morin.1998@free.fr:
  - host-prelink-cross has no Kconfig entry
  - reorder dependencies for arch deps first
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2020-02-20 22:16:30 +01:00

134 lines
5.7 KiB
Makefile

################################################################################
#
# gobject-introspection
#
################################################################################
GOBJECT_INTROSPECTION_VERSION_MAJOR = 1.62
GOBJECT_INTROSPECTION_VERSION = $(GOBJECT_INTROSPECTION_VERSION_MAJOR).0
GOBJECT_INTROSPECTION_SITE = http://ftp.gnome.org/pub/GNOME/sources/gobject-introspection/$(GOBJECT_INTROSPECTION_VERSION_MAJOR)
GOBJECT_INTROSPECTION_SOURCE = gobject-introspection-$(GOBJECT_INTROSPECTION_VERSION).tar.xz
GOBJECT_INTROSPECTION_INSTALL_STAGING = YES
GOBJECT_INTROSPECTION_AUTORECONF = YES
GOBJECT_INTROSPECTION_LICENSE = LGPL-2.0+, GPL-2.0+, BSD-2-Clause
GOBJECT_INTROSPECTION_LICENSE_FILES = COPYING.LGPL COPYING.GPL giscanner/scannerlexer.l
GOBJECT_INTROSPECTION_DEPENDENCIES = \
host-autoconf-archive \
host-gobject-introspection \
host-prelink-cross \
host-qemu \
libffi \
libglib2 \
python3 \
zlib
HOST_GOBJECT_INTROSPECTION_DEPENDENCIES = \
host-bison \
host-flex \
host-libglib2 \
host-python3
# g-ir-scanner will default to /usr/bin/ld for linking if this is not set.
GOBJECT_INTROSPECTION_NINJA_ENV += \
CC="$(TARGET_CC)"
# Disable introspection data on the host, as it is not needed and
# the package will attempt to use the systems libglib2 which will fail
# if the systems libglib2 version is older than 2.60.
HOST_GOBJECT_INTROSPECTION_CONF_OPTS = \
-Denable-introspection-data=false
# Use the host gi-scanner to prevent the scanner from generating incorrect
# elf classes.
GOBJECT_INTROSPECTION_CONF_OPTS = \
-Denable-host-gi=true \
-Denable-gi-cross-wrapper="$(STAGING_DIR)/usr/bin/g-ir-scanner-qemuwrapper" \
-Denable-gi-ldd-wrapper="$(STAGING_DIR)/usr/bin/g-ir-scanner-lddwrapper" \
-Denable-introspection-data=true
ifeq ($(BR2_PACKAGE_CAIRO),y)
GOBJECT_INTROSPECTION_DEPENDENCIES += cairo
GOBJECT_INTROSPECTION_CONF_OPTS += -Dcairo=true
endif
# GI_SCANNER_DISABLE_CACHE=1 prevents g-ir-scanner from writing cache data to ${HOME}
GOBJECT_INTROSPECTION_CONF_ENV = \
GI_SCANNER_DISABLE_CACHE=1
HOST_GOBJECT_INTROSPECTION_CONF_ENV = \
GI_SCANNER_DISABLE_CACHE=1
# Make sure g-ir-tool-template uses the host python.
define GOBJECT_INTROSPECTION_FIX_TOOLTEMPLATE_PYTHON_PATH
$(SED) '1s%#!.*%#!$(HOST_DIR)/bin/python%' $(@D)/tools/g-ir-tool-template.in
endef
HOST_GOBJECT_INTROSPECTION_PRE_CONFIGURE_HOOKS += GOBJECT_INTROSPECTION_FIX_TOOLTEMPLATE_PYTHON_PATH
# Perform the following:
# - Just as above, Ensure that g-ir-tool-template.in uses the host python.
# - Install all of the wrappers needed to build gobject-introspection.
# - Create a safe modules directory which does not exist so we don't load random things
# which may then get deleted (or their dependencies) and potentially segfault
define GOBJECT_INTROSPECTION_INSTALL_PRE_WRAPPERS
$(SED) '1s%#!.*%#!$(HOST_DIR)/bin/python%' $(@D)/tools/g-ir-tool-template.in
$(INSTALL) -D -m 755 $(GOBJECT_INTROSPECTION_PKGDIR)/g-ir-scanner-lddwrapper.in \
$(STAGING_DIR)/usr/bin/g-ir-scanner-lddwrapper
$(INSTALL) -D -m 755 $(GOBJECT_INTROSPECTION_PKGDIR)/g-ir-scanner-qemuwrapper.in \
$(STAGING_DIR)/usr/bin/g-ir-scanner-qemuwrapper
$(SED) "s%@QEMU_USER@%$(QEMU_USER)%g" \
$(STAGING_DIR)/usr/bin/g-ir-scanner-qemuwrapper
$(SED) "s%@TOOLCHAIN_HEADERS_VERSION@%$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)%g" \
$(STAGING_DIR)/usr/bin/g-ir-scanner-qemuwrapper
# Use a modules directory which does not exist so we don't load random things
# which may then get deleted (or their dependencies) and potentially segfault
mkdir -p $(STAGING_DIR)/usr/lib/gio/modules-dummy
endef
GOBJECT_INTROSPECTION_PRE_CONFIGURE_HOOKS += GOBJECT_INTROSPECTION_INSTALL_PRE_WRAPPERS
# Move the real compiler and scanner to .real, and replace them with the wrappers.
# Using .real has the following advantages:
# - There is no need to change the logic for other packages.
# - The wrappers call the .real files using qemu.
define GOBJECT_INTROSPECTION_INSTALL_WRAPPERS
# Move the real binaries to their names.real, then replace them with
# the wrappers.
$(foreach w,g-ir-compiler g-ir-scanner,
mv $(STAGING_DIR)/usr/bin/$(w) $(STAGING_DIR)/usr/bin/$(w).real
$(INSTALL) -D -m 755 \
$(GOBJECT_INTROSPECTION_PKGDIR)/$(w).in $(STAGING_DIR)/usr/bin/$(w)
)
# Gobject-introspection installs Makefile.introspection in
# $(STAGING_DIR)/usr/share which is needed for autotools-based programs to
# build .gir and .typelib files. Unfortuantly, gobject-introspection-1.0.pc
# uses $(prefix)/share as the directory, which
# causes the host /usr/share being used instead of $(STAGING_DIR)/usr/share.
# Change datarootdir to $(libdir)/../share which will prefix $(STAGING_DIR)
# to the correct location.
$(SED) "s%datarootdir=.*%datarootdir=\$${libdir}/../share%g" \
$(STAGING_DIR)/usr/lib/pkgconfig/gobject-introspection-1.0.pc
# By default, girdir and typelibdir use datadir and libdir as their prefix,
# of which pkg-config appends the sysroot directory. This results in files
# being installed in $(STAGING_DIR)/$(STAGING_DIR)/path/to/files.
# Changing the prefix to exec_prefix prevents this error.
$(SED) "s%girdir=.*%girdir=\$${exec_prefix}/share/gir-1.0%g" \
$(STAGING_DIR)/usr/lib/pkgconfig/gobject-introspection-1.0.pc
$(SED) "s%typelibdir=.*%typelibdir=\$${exec_prefix}/lib/girepository-1.0%g" \
$(STAGING_DIR)/usr/lib/pkgconfig/gobject-introspection-1.0.pc
endef
GOBJECT_INTROSPECTION_POST_INSTALL_STAGING_HOOKS += GOBJECT_INTROSPECTION_INSTALL_WRAPPERS
# Only .typelib files are needed to run.
define GOBJECT_INTROSPECTION_REMOVE_DEVELOPMENT_FILES
find $(TARGET_DIR)/usr/share \( -iname "*.gir" -o -iname \*.rnc \) -delete
endef
GOBJECT_INTROSPECTION_TARGET_FINALIZE_HOOKS += GOBJECT_INTROSPECTION_REMOVE_DEVELOPMENT_FILES
$(eval $(meson-package))
$(eval $(host-meson-package))