nixpkgs/pkgs/development/libraries/gobject-introspection/wrapper.nix
Artturin 740ebffd5a gobject-introspection: use lddtree instead of objdump as ldd wrapper
the wrong path was used in gir files because the format of objdump is
different from ldd so the regex in gobject-introspection doesn't work

https://gitlab.gnome.org/GNOME/gobject-introspection/-/blob/main/giscanner/shlibs.py#L42-57

  <namespace name="GLib"
             shared-library="/nix/store/pak6rr8wdnbwa1iq2ldvg8pa8zahl3r1-gobject-introspection-aarch64-unknown-linux-gnu-1.72.0/lib/libgobject-2.0.so.0,/nix/store/pak6rr8wdnbwa1iq2ldvg8pa8zahl3r1-gobject-introspection-aarch64-unknown-linux-gnu-1.72.0/lib/libglib-2.0.so.0"

objdump
gobject-introspection>   NEEDED               libgmodule-2.0.so.0
gobject-introspection>   NEEDED               libglib-2.0.so.0

ldd
gobject-introspection>  libgmodule-2.0.so.0 => /nix/store/ngm1wbwms13c2crsvrah2ypfj0b2yii5-glib-2.73.2/lib/libgmodule-2.0.so.0 (0x00007ffff7d6e000)
gobject-introspection>  libglib-2.0.so.0 => /nix/store/ngm1wbwms13c2crsvrah2ypfj0b2yii5-glib-2.73.2/lib/libglib-2.0.so.0 (0x00007ffff7c32000)
2022-09-07 21:24:08 +03:00

58 lines
2.5 KiB
Nix

{ lib
, stdenv
, buildPackages
, targetPackages
, gobject-introspection-unwrapped
, ...
}@_args:
# to build, run
# `nix build ".#pkgsCross.aarch64-multiplatform.buildPackages.gobject-introspection"`
let
# ensure that `.override` works when gobject-introspection == gobject-introspection-wrapped
args = builtins.removeAttrs _args [ "buildPackages" "targetPackages" "gobject-introspection-unwrapped" ];
# passing this stdenv to `targetPackages...` breaks due to splicing not working in `.override``
argsForTarget = builtins.removeAttrs args [ "stdenv" ];
in
(gobject-introspection-unwrapped.override args).overrideAttrs (previousAttrs: {
pname = "gobject-introspection-wrapped";
depsTargetTargetPropagated = [ gobject-introspection-unwrapped ];
postFixup = (previousAttrs.postFixup or "") + ''
mv $dev/bin/g-ir-compiler $dev/bin/.g-ir-compiler-wrapped
mv $dev/bin/g-ir-scanner $dev/bin/.g-ir-scanner-wrapped
(
export bash="${buildPackages.bash}"
export emulator=${lib.escapeShellArg (stdenv.targetPlatform.emulator buildPackages)}
export emulatorwrapper="$dev/bin/g-ir-scanner-qemuwrapper"
export buildlddtree="${buildPackages.pax-utils}/bin/lddtree"
export targetgir="${lib.getDev (targetPackages.gobject-introspection-unwrapped.override argsForTarget)}"
substituteAll "${./wrappers/g-ir-compiler.sh}" "$dev/bin/g-ir-compiler"
substituteAll "${./wrappers/g-ir-scanner.sh}" "$dev/bin/g-ir-scanner"
substituteAll "${./wrappers/g-ir-scanner-lddwrapper.sh}" "$dev/bin/g-ir-scanner-lddwrapper"
substituteAll "${./wrappers/g-ir-scanner-qemuwrapper.sh}" "$dev/bin/g-ir-scanner-qemuwrapper"
chmod +x $dev/bin/g-ir-*
)
''
# when cross-compiling and using the wrapper then when a package looks up the g_ir_X
# variable with pkg-config they'll get the host version which can't be run
# override the variable to use the absolute path to g_ir_X in PATH which can be run
+ ''
cat >> $dev/nix-support/setup-hook <<-'EOF'
override-pkg-config-gir-variables() {
PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_G_IR_SCANNER="$(type -p g-ir-scanner)"
PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_G_IR_COMPILER="$(type -p g-ir-compiler)"
PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_G_IR_GENERATE="$(type -p g-ir-generate)"
export PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_G_IR_SCANNER
export PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_G_IR_COMPILER
export PKG_CONFIG_GOBJECT_INTROSPECTION_1_0_G_IR_GENERATE
}
preConfigureHooks+=(override-pkg-config-gir-variables)
EOF
'';
})