media-sound/helm: Fix build on musl

Fixes three different issues with the bundled copy of JUCE in helm.
First, it conditions the usage of execinfo.h behind __GLIBC__ being
defined when on linux. Second, it removes the usage of lfs64 interfaces
and defines _FILE_OFFSET_BITS=64. Third, it conditions the usage of
_NL_IDENTIFICATION_LANGUAGE and _NL_IDENTIFICATION_TERRITORY behind
ifdefs, since musl does not define them.

Signed-off-by: Violet Purcell <vimproved@inventati.org>
Closes: https://github.com/gentoo/gentoo/pull/31463
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 131 insertions, 1 deletions

diff --git a/media-sound/helm/files/helm-0.9.0-musl.patch b/media-sound/helm/files/helm-0.9.0-musl.patch
new file mode 100644
index 000000000000..f089041c1da7
--- /dev/null
+++ b/media-sound/helm/files/helm-0.9.0-musl.patch
@@ -0,0 +1,129 @@
+Upstream (JUCE, bundled): https://github.com/juce-framework/JUCE/pull/1239
+
+From 393de14d3fb55e462eeae24a4e64978a8a30cd4f Mon Sep 17 00:00:00 2001
+From: Violet Purcell <vimproved@inventati.org>
+Date: Thu, 15 Jun 2023 19:01:32 +0000
+Subject: [PATCH] JUCE: Add support for musl
+
+---
+ JUCE/modules/juce_core/juce_core.cpp          |  2 +-
+ .../native/juce_linux_SystemStats.cpp         | 34 +++++++++++++++++--
+ .../juce_core/native/juce_posix_SharedCode.h  |  2 +-
+ .../juce_core/system/juce_SystemStats.cpp     |  2 +-
+ .../juce_core/system/juce_TargetPlatform.h    |  9 +++++
+ 5 files changed, 43 insertions(+), 6 deletions(-)
+
+diff --git a/JUCE/modules/juce_core/juce_core.cpp b/JUCE/modules/juce_core/juce_core.cpp
+index 9f87047..c6f28ce 100644
+--- a/JUCE/modules/juce_core/juce_core.cpp
++++ b/JUCE/modules/juce_core/juce_core.cpp
+@@ -93,7 +93,7 @@
+  #include <net/if.h>

+  #include <sys/ioctl.h>

+ 

+- #if ! JUCE_ANDROID

++ #if ! (JUCE_ANDROID || JUCE_MUSL)

+   #include <execinfo.h>

+  #endif

+ #endif

+diff --git a/JUCE/modules/juce_core/native/juce_linux_SystemStats.cpp b/JUCE/modules/juce_core/native/juce_linux_SystemStats.cpp
+index 4b8f4bd..55906eb 100644
+--- a/JUCE/modules/juce_core/native/juce_linux_SystemStats.cpp
++++ b/JUCE/modules/juce_core/native/juce_linux_SystemStats.cpp
+@@ -126,9 +126,37 @@ static String getLocaleValue (nl_item key)
+     return result;

+ }

+ 

+-String SystemStats::getUserLanguage()    { return getLocaleValue (_NL_IDENTIFICATION_LANGUAGE); }

+-String SystemStats::getUserRegion()      { return getLocaleValue (_NL_IDENTIFICATION_TERRITORY); }

+-String SystemStats::getDisplayLanguage() { return getUserLanguage() + "-" + getUserRegion(); }

++String SystemStats::getUserLanguage()

++{

++   #if JUCE_GLIBC

++    return getLocaleValue (_NL_ADDRESS_LANG_AB);

++   #else

++    if (auto langEnv = getenv ("LANG"))

++        return String::fromUTF8 (langEnv).upToLastOccurrenceOf (".UTF-8", false, true);

++

++    return {};

++   #endif

++}

++

++String SystemStats::getUserRegion()

++{

++   #if JUCE_GLIBC

++    return getLocaleValue (_NL_ADDRESS_COUNTRY_AB2);

++   #else

++    return {};

++   #endif

++}

++

++String SystemStats::getDisplayLanguage()

++{

++    auto result = getUserLanguage();

++    auto region = getUserRegion();

++

++    if (region.isNotEmpty())

++        result << "-" << region;

++

++    return result;

++}

+ 

+ //==============================================================================

+ void CPUInformation::initialise() noexcept

+diff --git a/JUCE/modules/juce_core/native/juce_posix_SharedCode.h b/JUCE/modules/juce_core/native/juce_posix_SharedCode.h
+index 876e681..59c49ba 100644
+--- a/JUCE/modules/juce_core/native/juce_posix_SharedCode.h
++++ b/JUCE/modules/juce_core/native/juce_posix_SharedCode.h
+@@ -235,7 +235,7 @@ int juce_siginterrupt (int sig, int flag)
+ //==============================================================================

+ namespace

+ {

+-   #if JUCE_LINUX || (JUCE_IOS && ! __DARWIN_ONLY_64_BIT_INO_T) // (this iOS stuff is to avoid a simulator bug)

++   #if JUCE_GLIBC || (JUCE_IOS && ! __DARWIN_ONLY_64_BIT_INO_T) // (this iOS stuff is to avoid a simulator bug)

+     typedef struct stat64 juce_statStruct;

+     #define JUCE_STAT     stat64

+    #else

+diff --git a/JUCE/modules/juce_core/system/juce_SystemStats.cpp b/JUCE/modules/juce_core/system/juce_SystemStats.cpp
+index 7e05277..cac9a14 100644
+--- a/JUCE/modules/juce_core/system/juce_SystemStats.cpp
++++ b/JUCE/modules/juce_core/system/juce_SystemStats.cpp
+@@ -120,7 +120,7 @@ String SystemStats::getStackBacktrace()
+ {

+     String result;

+ 

+-   #if JUCE_ANDROID || JUCE_MINGW

++   #if JUCE_ANDROID || JUCE_MINGW || JUCE_MUSL

+     jassertfalse; // sorry, not implemented yet!

+ 

+    #elif JUCE_WINDOWS

+diff --git a/JUCE/modules/juce_core/system/juce_TargetPlatform.h b/JUCE/modules/juce_core/system/juce_TargetPlatform.h
+index ae9d7e1..9dca4bc 100644
+--- a/JUCE/modules/juce_core/system/juce_TargetPlatform.h
++++ b/JUCE/modules/juce_core/system/juce_TargetPlatform.h
+@@ -33,6 +33,7 @@
+     - Either JUCE_LITTLE_ENDIAN or JUCE_BIG_ENDIAN.

+     - Either JUCE_INTEL or JUCE_ARM

+     - Either JUCE_GCC or JUCE_CLANG or JUCE_MSVC

++    - Either JUCE_GLIBC or JUCE_MUSL will be defined on Linux depending on the system's libc implementation.

+ */

+ 

+ //==============================================================================

+@@ -177,6 +178,14 @@
+   #elif __MMX__ || __SSE__ || __amd64__

+     #define JUCE_INTEL 1

+   #endif

++

++  #if JUCE_LINUX

++    #ifdef __GLIBC__

++      #define JUCE_GLIBC 1

++    #else

++      #define JUCE_MUSL 1

++    #endif

++  #endif

+ #endif

+ 

+ //==============================================================================

+-- 
+2.41.0
+
diff --git a/media-sound/helm/helm-0.9.0-r1.ebuild b/media-sound/helm/helm-0.9.0-r2.ebuild
index eb8bb1120649..46ef109dc534 100644
--- a/media-sound/helm/helm-0.9.0-r1.ebuild
+++ b/media-sound/helm/helm-0.9.0-r2.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
@@ -34,6 +34,7 @@ DOCS=( changelog README.md )
 PATCHES=(
 	"${FILESDIR}/${P}-nomancompress.patch"
 	"${FILESDIR}/${P}-fix-gcc91.patch"
+	"${FILESDIR}/${P}-musl.patch"
 )
 
 src_prepare() {