Public bug reported:
The build fails with the following errors:
---
1: all warnings being treated as errors
make[2]: *** [make_linux.mak:180: cairo.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [make_linux.mak:203: atk.o] Error 1
cairo_structs.c: In function ‘getcairo_path_tFields’:
cairo_structs.c:85:26: error: cast to pointer from integer of different size
[-Werror=int-to-pointer-cast]
85 | lpStruct->data = (cairo_path_data_t *)(*env)->GetLongField(env,
lpObject, cairo_path_tFc.data);
| ^
cairo_structs.c: In function ‘setcairo_path_tFields’:
cairo_structs.c:94:66: error: cast from pointer to integer of different size
[-Werror=pointer-to-int-cast]
94 | (*env)->SetLongField(env, lpObject, cairo_path_tFc.data,
(jlong)lpStruct->data);
| ^
cc1: all warnings being treated as errors
make[2]: *** [make_linux.mak:182: cairo_structs.o] Error 1
cc1: all warnings being treated as errors
make[2]: *** [make_linux.mak:205: atk_structs.o] Error 1
--- [1]
Note:
On 32-bit arches the sizeof(void*) == 4 and sizeof(jlong)=8 bytes
The JNI code uses jlong to store pointer values and then assigns them back to
the pointers.
In this case we can disable those warnings.
[1]
https://launchpadlibrarian.net/720137763/buildlog_ubuntu-noble-armhf.swt4-gtk_4.26.0-2build1_BUILDING.txt.gz
** Affects: swt4-gtk (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2058559
Title:
Unable to build swt4-gtk on armhf due to int-to-pointer and point-to-
int cast warnings
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