Use is like:
```
(declare-native
:name "my-nuermical-library"
:source @["numerical_lib.c"]
:native-deps ["tarray"])
```
Where `tarray` is a native generated by o ne of the project
dependencies. This will lets us move more C functionality out of the
core of Janet while still allowing it's use from natives.
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>
Structs and tuples composed entirely out of constant values
will themselves be considered constant values during compilation.
This reduces the amount of generated code.
This means a binscript needs to indicate that it is a Janet script, and
then the user who is installing the script can choose whether or not to
do the magic shebang replacement.
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>
