Cross compilation for different CPU fails

[xnoreq]

Setting -march in C(XX)FLAGS to a different CPU than the host system will result in a build error:

ninja: Entering directory `/home/build/packages/fribidi-prefix/src/fribidi-build'
[1/62] Compiling C object 'gen.tab/1a55e88@@gen-unicode-version@exe/gen-unicode-version.c.obj'.
[2/62] Linking target gen.tab/gen-unicode-version.
[3/62] Generating fribidi-unicode-version.h with a meson_exe.py custom command.
[4/62] Compiling C object 'gen.tab/1a55e88@@gen-bidi-type-tab@exe/gen-bidi-type-tab.c.obj'.
[5/62] Compiling C object 'gen.tab/1a55e88@@gen-bidi-type-tab@exe/packtab.c.obj'.
[6/62] Compiling C object 'gen.tab/1a55e88@@gen-joining-type-tab@exe/packtab.c.obj'.
[7/62] Compiling C object 'gen.tab/1a55e88@@gen-joining-type-tab@exe/gen-joining-type-tab.c.obj'.
[8/62] Linking target gen.tab/gen-bidi-type-tab.
[9/62] Linking target gen.tab/gen-joining-type-tab.
[10/62] Compiling C object 'gen.tab/1a55e88@@gen-arabic-shaping-tab@exe/gen-arabic-shaping-tab.c.obj'.
[11/62] Compiling C object 'gen.tab/1a55e88@@gen-arabic-shaping-tab@exe/packtab.c.obj'.
[12/62] Linking target gen.tab/gen-arabic-shaping-tab.
[13/62] Generating gen-joining-type-tab with a meson_exe.py custom command.
FAILED: gen.tab/joining-type.tab.i
/usr/bin/meson --internal exe /home/build/packages/fribidi-prefix/src/fribidi-build/meson-private/meson_exe_gen-joining-type-tab_27f6141f6867ccd1da41b423057bf31f543bcc63.dat
[14/62] Generating gen-arabic-shaping-tab with a meson_exe.py custom command.
FAILED: gen.tab/arabic-shaping.tab.i
/usr/bin/meson --internal exe /home/build/packages/fribidi-prefix/src/fribidi-build/meson-private/meson_exe_gen-arabic-shaping-tab_f62b79f1df6ab4d3ebb04011e8001e25aaa5f206.dat
[15/62] Generating gen-bidi-type-tab with a meson_exe.py custom command.
FAILED: gen.tab/bidi-type.tab.i
/usr/bin/meson --internal exe /home/build/packages/fribidi-prefix/src/fribidi-build/meson-private/meson_exe_gen-bidi-type-tab_204a27bcdc27e46f326808dff1f7fe3309db873e.dat
ninja: build stopped: subcommand failed.

[behdad]

I don't think that's how you are supposed to do cross-compilation. But then again, I don't know anything about meson.

[xnoreq]

I am using a meson cross-file with all the correct paths but I don't think you can specify host CFLAGS in there.
And meson seems to use env vars like CFLAGS for the build system instead of the host. Or maybe it does use them for the host too..

[vtorri]

template :

https://github.com/vtorri/ewpi/blob/master/packages/glib2/cross_toolchain.txt

you have to replace text between @ with the correct value. I use sed for that