Fix the following build failure with -Dsingle_threaded=true on embedded
toolchains without pthread:
FAILED: janet.p/meson-generated_.._janet.c.o
/home/buildroot/autobuild/run/instance-3/output-1/host/bin/arm-linux-gcc -Ijanet.p -I. -I.. -I../src/include -fdiagnostics-color=always -pipe -Wall -Winvalid-pch -std=c99 -O3 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -pthread -fvisibility=hidden -MD -MQ janet.p/meson-generated_.._janet.c.o -MF janet.p/meson-generated_.._janet.c.o.d -o janet.p/meson-generated_.._janet.c.o -c janet.c
In file included from /home/buildroot/autobuild/run/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/include/stdlib.h:24,
from ../src/include/janet.h:300,
from src/core/features.h:57:
/home/buildroot/autobuild/run/instance-3/output-1/host/arm-buildroot-linux-uclibcgnueabihf/sysroot/usr/include/features.h:218:5: warning: #warning requested reentrant code, but thread support was disabled [-Wcpp]
218 | # warning requested reentrant code, but thread support was disabled
| ^~~~~~~
src/core/ev.c:39:10: fatal error: pthread.h: No such file or directory
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Since Meson 0.51, there are special build options for "native:true"
builds, prefixed with "build.". This change breaks cross builds
because `janet-boot/src_core_asm.c` is no longer built with `-std=c99`:
FAILED: janet-boot.p/src_core_asm.c.o
/usr/bin/gcc -Ijanet-boot.p -I. -I.. -I../src/include -pipe -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -O3 -pthread -DJANET_BOOTSTRAP -MD -MQ janet-boot.p/src_core_asm.c.o -MF janet-boot.p/src_core_asm.c.o.d -o janet-boot.p/src_core_asm.c.o -c ../src/core/asm.c
../src/core/asm.c: In function 'janet_disasm_bytecode':
../src/core/asm.c:866:5: error: 'for' loop initial declarations are only allowed in C99 mode
for (int32_t i = 0; i < def->bytecode_length; i++) {
^
Fixes:
- http://autobuild.buildroot.net/results/355e0992338a8d132050517f83a3884606b00529
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Don't search for cross compilerUnless needed.
This should help prevent issues building Meson on debian. Also
fix issue using the wrong set of flags to build the native janet
interpreter vs. the cross compiled janet interpreter.
This means we no longer need to guess paths after install.
Custom directory layouts can now be better supported at install
time without need for environment variables.
