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oh -lexecinfo exists

This commit is contained in:
Cadey Ratio 2019-06-23 16:16:03 -04:00
parent cba2905135
commit 3037b455c6
1 changed files with 24 additions and 2 deletions
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26
blog/v-vaporware-2019-06-23.markdown
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@ -277,8 +277,30 @@ RUN apk --no-cache add build-base libexecinfo-dev clang git \
&& apk del clang
```
Except it doesn't build on Alpine. Annoying, but we can adjust to Ubuntu fairly
easily:
Except it doesn't build on Alpine:
```
/usr/bin/ld: /tmp/v-c9fb07.o: in function `os__print_backtrace':
v.c:(.text+0x84d9): undefined reference to `backtrace'
/usr/bin/ld: v.c:(.text+0x8514): undefined reference to `backtrace_symbols_fd'
clang-8: error: linker command failed with exit code 1 (use -v to see invocation)
```
It looks like `backtrace()` is a glibc-specific addon. Let's link against
[`libexecinfo`](https://www.freshports.org/devel/libexecinfo) to fix this:
```
&& clang -Dlinux -lexecinfo -std=c11 -w -o vc v.c \
```
```
Cloning into '/root/code/v'...
Connecting to vlang.io (3.91.188.13:443)
v.c 100% |********************************| 310k 0:00:00 ETA
Segmentation fault (core dumped)
```
Annoying, but we can adjust to Ubuntu fairly easily:
```
FROM ubuntu:latest