std.os.getenv and std.os.getenvZ have nice compile errors when not linking
libc and using Windows.
std.os.getenvW is provided as a Windows-only API that does not require
an allocator. It uses the Process Environment Block.
std.process.getEnvVarOwned is improved to be a simple wrapper on top of
std.os.getenvW.
std.process.getEnvMap is improved to use the Process Environment Block
rather than calling GetEnvironmentVariableW.
std.zig.system.NativePaths uses process.getEnvVarOwned instead of
std.os.getenvZ, which works on Windows as well as POSIX.
This function expands argv[0] into the absolute path resolved with PATH
environment variable before making the execve syscall. However, in case
the execve fails, e.g. with ENOENT, it did not restore argv to how it
was before it was passed in. This resulted in the caller performing an
invalid free.
This commit also adds verbose debug info when native system C compiler
detection fails. See #4521.
When the build.zig logic to build libzigstage2 was converted to a cmake
command, it neglected to use baseline CPU features rather than compiling
with native features.
This adds a hard coded flag `-mcpu=baseline` which can be used to detect
the native target, but mark it as non-native so that it does not get the
CPU features specific to the host used to compile libzigstage2.
Full `-mcpu` support is happening in the upcoming pull request #4509,
and so this "quick fix" will be cleaned up in that branch, before it is
merged to master.
closes#4506
This was deceptive. It was always meant to be sort of a "GNU readline"
sort of thing where it provides a Command Line Interface to input text.
However that functionality did not exist and it was basically a red
herring for people trying to read line-delimited input from a stream.
In this commit the API is deleted, so that people can find the proper
API more easily.
A CLI text input abstraction would be useful but may not even need to be
in the standard library. As you can see in this commit, the guess_number
CLI game gets by just fine by using `std.fs.File.read`.
