How to call `autoheader`?

I'm using `configure_make` to build [SAMtools](https://github.com/samtools/samtools#building-samtools), a popular bioinformatics library.

The installation instructions request that the user run `autoheader` *before* `autoconf`.

I can obviously just check in the `config.h.in` file that `autoheader` generates, but this will introduce the requirement that I carefully ensure the (6+) environments I build in have identical libraries (and I am not a large enough operation to realistically vendor all of these upstream dependencies).

I tried playing some tricks like:
```
autogen = 1,
autogen_command = "autoheader",
```
but that produces a `build_script.sh` like:
```
NOCONFIGURE="1" "$BUILD_TMPDIR/autoheader"
```
which is not quite right.

I've patched this repo to get the behavior I want for now, but was wondering if there is a "better" way to do this?

```diff
❯ git diff HEAD~1 HEAD
diff --git a/foreign_cc/configure.bzl b/foreign_cc/configure.bzl
index 781f3ab..bc5c15b 100644
--- a/foreign_cc/configure.bzl
+++ b/foreign_cc/configure.bzl
@@ -111,6 +111,7 @@ def _create_configure_script(configureParameters):
autogen = ctx.attr.autogen,
autogen_command = ctx.attr.autogen_command,
autogen_options = ctx.attr.autogen_options,
+ autoheader = ctx.attr.autoheader,
make_commands = make_commands,
make_path = attrs.make_path,
)
@@ -159,6 +160,14 @@ def _attrs():
"autogen_options": attr.string_list(
doc = "Any options to be put in the 'autogen.sh' command line.",
),
+ "autoheader": attr.bool(
+ doc = (
+ "Set to True if we should run 'autoheader' before 'autoconf', " +
+ "currently requires `configure_in_place` to be True."
+ ),
+ mandatory = False,
+ default = False,
+ ),
"autoreconf": attr.bool(
doc = (
"Set to True if 'autoreconf' should be invoked before 'configure.', " +
diff --git a/foreign_cc/private/configure_script.bzl b/foreign_cc/private/configure_script.bzl
index dce885a..aa8836f 100644
--- a/foreign_cc/private/configure_script.bzl
+++ b/foreign_cc/private/configure_script.bzl
@@ -24,6 +24,7 @@ def create_configure_script(
autogen,
autogen_command,
autogen_options,
+ autoheader,
make_path,
make_commands):
ext_build_dirs = inputs.ext_build_dirs
@@ -40,6 +41,9 @@ def create_configure_script(
script.append("##export_var## MAKE {}".format(make_path))
script.append("##enable_tracing##")

+ if autoheader:
+ script.append("autoheader")
+
if autogen:
# NOCONFIGURE is pseudo standard and tells the script to not invoke configure.
# We explicitly invoke configure later.
```

Start in foreign_cc/configure.bzl and private/configure_script.bzl, following create_configure_script and the generated build_script.sh shown in the issue. Verify how configure_make assembles autogen commands, then confirm that the requested autoheader invocation appears before autoconf without breaking existing generation behavior.

Written by the indexing model from the issue text.