mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-17 02:14:36 +00:00
76 lines
2.5 KiB
XML
76 lines
2.5 KiB
XML
<chapter xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
xml:id="chap-platform-nodes">
|
|
<title>Platform Notes</title>
|
|
<section xml:id="sec-darwin">
|
|
<title>Darwin (macOS)</title>
|
|
|
|
<para>
|
|
Some common issues when packaging software for darwin:
|
|
</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para>
|
|
The darwin <literal>stdenv</literal> uses clang instead of gcc. When
|
|
referring to the compiler <varname>$CC</varname> or <command>cc</command>
|
|
will work in both cases. Some builds hardcode gcc/g++ in their build
|
|
scripts, that can usually be fixed with using something like
|
|
<literal>makeFlags = [ "CC=cc" ];</literal> or by patching the build
|
|
scripts.
|
|
</para>
|
|
<programlisting>
|
|
stdenv.mkDerivation {
|
|
name = "libfoo-1.2.3";
|
|
# ...
|
|
buildPhase = ''
|
|
$CC -o hello hello.c
|
|
'';
|
|
}
|
|
</programlisting>
|
|
</listitem>
|
|
<listitem>
|
|
<para>
|
|
On darwin libraries are linked using absolute paths, libraries are
|
|
resolved by their <literal>install_name</literal> at link time. Sometimes
|
|
packages won't set this correctly causing the library lookups to fail at
|
|
runtime. This can be fixed by adding extra linker flags or by running
|
|
<command>install_name_tool -id</command> during the
|
|
<function>fixupPhase</function>.
|
|
</para>
|
|
<programlisting>
|
|
stdenv.mkDerivation {
|
|
name = "libfoo-1.2.3";
|
|
# ...
|
|
makeFlags = stdenv.lib.optional stdenv.isDarwin "LDFLAGS=-Wl,-install_name,$(out)/lib/libfoo.dylib";
|
|
}
|
|
</programlisting>
|
|
</listitem>
|
|
<listitem>
|
|
<para>
|
|
Some packages assume xcode is available and use <command>xcrun</command>
|
|
to resolve build tools like <command>clang</command>, etc. This causes
|
|
errors like <code>xcode-select: error: no developer tools were found at
|
|
'/Applications/Xcode.app'</code> while the build doesn't actually depend
|
|
on xcode.
|
|
</para>
|
|
<programlisting>
|
|
stdenv.mkDerivation {
|
|
name = "libfoo-1.2.3";
|
|
# ...
|
|
prePatch = ''
|
|
substituteInPlace Makefile \
|
|
--replace '/usr/bin/xcrun clang' clang
|
|
'';
|
|
}
|
|
</programlisting>
|
|
<para>
|
|
The package <literal>xcbuild</literal> can be used to build projects that
|
|
really depend on Xcode, however projects that build some kind of graphical
|
|
interface won't work without using Xcode in an impure way.
|
|
</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
</chapter>
|