Bug 886472 – >=x11-libs/cairo-1.17.6[X] cross-compile fails: ERROR: Can not run test applications in this cross environment

• Status: UNCONFIRMED
• Product: Gentoo Linux

[Description tt_1 2022-12-17 09:16:26 UTC]

Created attachment 843201 [details]
build log from aarch64-cross

attempting to cross-compile x11-libs/cairo-1.17.6: 

Run-time dependency zlib found: YES 1.2.13
Run-time dependency libpng found: YES 1.6.38
Run-time dependency fontconfig found: YES 2.14.0
Run-time dependency freetype2 found: YES 24.3.18
Checking if "FT has color" with dependency freetype2: links: YES 
Run-time dependency x11 found: YES 1.8.1
Run-time dependency xext found: YES 1.3.5

../cairo-1.17.6/meson.build:375:4: ERROR: Can not run test applications in this cross environment.

system is running meson-0.63.3

build log is attached

[Comment 1 tt_1 2022-12-17 09:16:54 UTC]

Created attachment 843202 [details]
meson log

[Comment 2 tt_1 2022-12-17 09:17:12 UTC]

Created attachment 843209 [details]
emerge --info from host

[Comment 3 tt_1 2022-12-17 09:17:46 UTC]

Created attachment 843210 [details]
output from emerge --info (aarch64)

[Comment 4 tt_1 2022-12-17 09:18:45 UTC]

I see this error in the meson log: 

Compiler stderr:
 /var/tmp/portage/portage/x11-libs/cairo-1.17.6/work/cairo-1.17.6-.arm64/meson-private/tmpnwsy540f/testfile.cpp: In function 'int main()':
/var/tmp/portage/portage/x11-libs/cairo-1.17.6/work/cairo-1.17.6-.arm64/meson-private/tmpnwsy540f/testfile.cpp:3:65: error: narrowing conversion of '-1' from 'int' to 'long unsigned int' [-Wnarrowing]
    3 |         int main(void) { static int a[1-2*!(sizeof(void *) > 15)]; a[0]=0; return 0; }
      |                                                                 ^
/var/tmp/portage/portage/x11-libs/cairo-1.17.6/work/cairo-1.17.6-.arm64/meson-private/tmpnwsy540f/testfile.cpp:3:40: error: size '-1' of array 'a' is negative
    3 |         int main(void) { static int a[1-2*!(sizeof(void *) > 15)]; a[0]=0; return 0; }

[Comment 5 tt_1 2022-12-22 12:29:54 UTC]

I forgot to provide the output of emerge -pv x11-libs/cairo

[ebuild     U  ] x11-libs/cairo-1.17.6::gentoo [1.16.0-r6::gentoo] to /usr/armv7a-unknown-linux-gnueabihf/ USE="X glib (-aqua) (-debug) (-gles2-only) -gles3% -gtk-doc% -opengl -test% (-static-libs%) (-svg%*) (-utils%) (-valgrind%)" 0 KiB


the configure is broken with using X, if USE="-X" is provided, it passes

[Comment 6 tt_1 2022-12-22 15:46:16 UTC]

Created attachment 844749 [details, diff]
simple patch to fix cross-compile

simple hack to workaround, it does compile now

I've opened an upstream patch, maybe there will be a proper solution soon.