[PR PATCH] lame: fix ID3 tags on musl

[balejk <balejk@users.noreply.github.com>]

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There is a new pull request by balejk against master on the void-packages repository

https://github.com/balejk/void-packages lame-translit
https://github.com/void-linux/void-packages/pull/43550

lame: fix ID3 tags on musl
<!-- Uncomment relevant sections and delete options which are not applicable -->

musl's iconv does not support transliterations causing `lame` to fail to write most of the ID3 tags.

I have modified the code so that it only does transliteration if the host libc is glibc. I don't know whether there are any other iconv implementations which support this, if so, please let me know and I can try to add them, although for Void's purposes it's needless at the moment.

I have not attempted to submit the patch upstream as it seems inactive, I might try to do so later.

#### Testing the changes
- I tested the changes in this PR: **YES** (on musl)

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#### New package
- This new package conforms to the [package requirements](https://github.com/void-linux/void-packages/blob/master/CONTRIBUTING.md#package-requirements): **YES**|**NO**
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#### Local build testing
- I built this PR locally for my native architecture, (x86_64-musl)
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - x86_64


A patch file from https://github.com/void-linux/void-packages/pull/43550.patch is attached

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From 1797153489c2cfbfcedab88f863a72f25852eb14 Mon Sep 17 00:00:00 2001
From: Karel Balej <balejk@matfyz.cz>
Date: Thu, 20 Apr 2023 19:15:09 +0200
Subject: [PATCH] lame: fix ID3 tags on musl

---
 srcpkgs/lame/patches/translit.patch | 26 ++++++++++++++++++++++++++
 srcpkgs/lame/template               |  2 +-
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 srcpkgs/lame/patches/translit.patch

diff --git a/srcpkgs/lame/patches/translit.patch b/srcpkgs/lame/patches/translit.patch
new file mode 100644
index 000000000000..660c57c930d9
--- /dev/null
+++ b/srcpkgs/lame/patches/translit.patch
@@ -0,0 +1,26 @@
+--- lame/frontend/parse.c	2023-04-20 18:12:43.988212890 +0200
++++ -	2023-04-20 18:13:39.537622345 +0200
+@@ -232,7 +232,11 @@
+         dst = calloc(n+4, 4);
+         if (dst != 0) {
+             char* cur_code = nl_langinfo(CODESET);
++#ifdef __GNU_LIBRARY__
+             iconv_t xiconv = iconv_open("ISO_8859-1//TRANSLIT", cur_code);
++#else
++            iconv_t xiconv = iconv_open("ISO_8859-1", cur_code);
++#endif
+             if (xiconv != (iconv_t)-1) {
+                 char* i_ptr = (char*)src;
+                 char* o_ptr = dst;
+@@ -258,7 +262,11 @@
+         dst = calloc(n+4, 4);
+         if (dst != 0) {
+             char* cur_code = nl_langinfo(CODESET);
++#ifdef __GNU_LIBRARY__
+             iconv_t xiconv = iconv_open("UTF-16LE//TRANSLIT", cur_code);
++#else
++            iconv_t xiconv = iconv_open("UTF-16LE", cur_code);
++#endif
+             dst[0] = 0xff;
+             dst[1] = 0xfe;
+             if (xiconv != (iconv_t)-1) {
diff --git a/srcpkgs/lame/template b/srcpkgs/lame/template
index 7718c7720c76..5bc4247b3f43 100644
--- a/srcpkgs/lame/template
+++ b/srcpkgs/lame/template
@@ -1,7 +1,7 @@
 # Template file for 'lame'
 pkgname=lame
 version=3.100
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--enable-nasm --enable-shared"
 hostmakedepends="nasm"