package/meson: make pkg-config --static aware

Our pkg-config wrapper is not used since commit
4e0bc29993376613d200e892d491e31ea5a49622, this raise static build
failures with libglib2 because --static is not passed anymore to
pkg-config so add a patch to get back the old behaviour.

The patch was proposed upstream
https://github.com/mesonbuild/meson/pull/6629, and the feedback was
not very positive. However, we need a solution that works for
Buildroot now, and this proposal is simple enough.

Fixes:

  http://autobuild.buildroot.org/results/0d36952def63cb69628697fa6408aeb6ce10cb5b

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/meson/0004-mesonbuild-dependencies-base.py-add-pkg_config_stati.patch

@@ -0,0 +1,38 @@
+From 3a4962ede0d12bac66b38e0843f6e2ea75b03d50 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sat, 15 Feb 2020 15:13:59 +0100
+Subject: [PATCH] mesonbuild/dependencies/base.py: add pkg_config_static
+
+Allow the user to always call pkg-config with --static thanks to a
+pkg_config_static property. This will allow to fix static build failures
+with libglib2:
+
+FAILED: gio/gio
+/home/naourr/work/instance-0/output-1/host/bin/arm-linux-gcc  -o gio/gio 'gio/6ae6c9e@@gio@exe/gio-tool.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-cat.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-copy.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-info.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-list.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-mime.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-mkdir.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-monitor.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-mount.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-move.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-open.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-rename.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-remove.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-save.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-set.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-trash.c.o' 'gio/6ae6c9e@@gio@exe/gio-tool-tree.c.o' -Wl,--as-needed -Wl,--no-undefined -Wl,-O1 -static -Wl,--start-group gio/libgio-2.0.a glib/libglib-2.0.a gobject/libgobject-2.0.a gmodule/libgmodule-2.0.a -pthread /home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libz.a /home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libmount.a /home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libpcre.a -lm /home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libffi.a -Wl,--end-group '-Wl,-rpath,$ORIGIN/:$ORIGIN/../glib:$ORIGIN/../gobject:$ORIGIN/../gmodule' -Wl,-rpath-link,/home/naourr/work/instance-0/output-1/build/libglib2-2.62.4/build/gio -Wl,-rpath-link,/home/naourr/work/instance-0/output-1/build/libglib2-2.62.4/build/glib -Wl,-rpath-link,/home/naourr/work/instance-0/output-1/build/libglib2-2.62.4/build/gobject -Wl,-rpath-link,/home/naourr/work/instance-0/output-1/build/libglib2-2.62.4/build/gmodule
+/home/naourr/work/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/8.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: /home/naourr/work/instance-0/output-1/host/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libmount.a(la-fs.o): in function `__mnt_fs_set_source_ptr':
+fs.c:(.text+0x5ec): undefined reference to `blkid_parse_tag_string'
+
+Fixes:
+ - http://autobuild.buildroot.org/results/0d36952def63cb69628697fa6408aeb6ce10cb5b
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ mesonbuild/dependencies/base.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/mesonbuild/dependencies/base.py b/mesonbuild/dependencies/base.py
+index a83e3d6c..913bff6b 100644
+--- a/mesonbuild/dependencies/base.py
++++ b/mesonbuild/dependencies/base.py
+@@ -840,7 +840,7 @@ class PkgConfigDependency(ExternalDependency):
+     def _set_libs(self):
+         env = None
+         libcmd = [self.name, '--libs']
+-        if self.static:
++        if self.static or self.env.properties[self.for_machine].get('pkg_config_static', False):
+             libcmd.append('--static')
+         # Force pkg-config to output -L fields even if they are system
+         # paths so we can do manual searching with cc.find_library() later.
+-- 
+2.24.1
+

package/meson/cross-compilation.conf.in

@@ -18,6 +18,7 @@ cpp_args = [@TARGET_CXXFLAGS@]
 cpp_link_args = [@TARGET_LDFLAGS@]
 sys_root = '@STAGING_DIR@'
 pkg_config_libdir = '@STAGING_DIR@/usr/lib/pkgconfig:@STAGING_DIR@/usr/share/pkgconfig'
+pkg_config_static = '@STATIC@'
 
 [host_machine]
 system = 'linux'

package/pkg-meson.mk

@@ -76,6 +76,7 @@ define $(2)_CONFIGURE_CMDS
 	    -e 's%@TARGET_CXXFLAGS@%$$(call make-comma-list,$$($(2)_CXXFLAGS))%g' \
 	    -e 's%@HOST_DIR@%$$(HOST_DIR)%g' \
 	    -e 's%@STAGING_DIR@%$$(STAGING_DIR)%g' \
+	    -e 's%@STATIC@%$$(if $$(BR2_STATIC_LIBS),true,false)%g' \
 	    -e "/^\[binaries\]$$$$/s:$$$$:$$(foreach x,$$($(2)_MESON_EXTRA_BINARIES),\n$$(x)):" \
 	    -e "/^\[properties\]$$$$/s:$$$$:$$(foreach x,$$($(2)_MESON_EXTRA_PROPERTIES),\n$$(x)):" \
 	    package/meson/cross-compilation.conf.in \
@@ -193,6 +194,7 @@ define PKG_MESON_INSTALL_CROSS_CONF
 	    -e 's%@TARGET_CXXFLAGS@%$(call make-comma-list,$(TARGET_CXXFLAGS))@PKG_TARGET_CFLAGS@%g' \
 	    -e 's%@HOST_DIR@%$(HOST_DIR)%g' \
 	    -e 's%@STAGING_DIR@%$(STAGING_DIR)%g' \
+	    -e 's%@STATIC@%$$(if $$(BR2_STATIC_LIBS),true,false)%g' \
 	    $(HOST_MESON_PKGDIR)/cross-compilation.conf.in \
 	    > $(HOST_DIR)/etc/meson/cross-compilation.conf.in
 	sed -e 's%@PKG_TARGET_CFLAGS@%%g' \