From 400a204bea4aa72d51a0ef53260743c9f7ee0310 Mon Sep 17 00:00:00 2001
From: brahmajit das <brahmajit.xyz@gmail.com>
Date: Fri, 15 Jul 2022 15:43:20 +0530
Subject: sci-libs/netcdf: Fix musl missing execinfo.h check

Check if execinfo.h is present before including the header. The check is
preset in other parts of the souce code, here it was only being checked if
it's WIN32 or CYGIWIN before including execinfo.h as a result build was
failing on musl.

Closes: https://bugs.gentoo.org/828677

Signed-off-by: brahmajit das <brahmajit.xyz@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/26284
Signed-off-by: Sam James <sam@gentoo.org>
---
 .../files/netcdf-4.9.0-fix-musl-execinfo_h.patch   | 46 ++++++++++++++++++++++
 sci-libs/netcdf/netcdf-4.9.0.ebuild                |  1 +
 2 files changed, 47 insertions(+)
 create mode 100644 sci-libs/netcdf/files/netcdf-4.9.0-fix-musl-execinfo_h.patch

(limited to 'sci-libs')

diff --git a/sci-libs/netcdf/files/netcdf-4.9.0-fix-musl-execinfo_h.patch b/sci-libs/netcdf/files/netcdf-4.9.0-fix-musl-execinfo_h.patch
new file mode 100644
index 000000000000..7b711327512a
--- /dev/null
+++ b/sci-libs/netcdf/files/netcdf-4.9.0-fix-musl-execinfo_h.patch
@@ -0,0 +1,46 @@
+# Conditionally include execinfo as it's not available on all libc
+# systems. There is a PR upstream for a similiar issue but the actual
+# issus is not reproducable on Gentoo [math library not found] [1], so
+# for now this is a temporary fix and can be removed once the PR [1]
+# is merged upstream.
+# [1]: https://github.com/Unidata/netcdf-c/pull/1701
+#
+# Closes: https://bugs.gentoo.org/828677
+--- a/libhdf5/hdf5debug.c
++++ b/libhdf5/hdf5debug.c
+@@ -5,7 +5,7 @@
+ #include "config.h"
+ #include <stdarg.h>
+ #include <stdio.h>
+-#if !defined _WIN32 && !defined __CYGWIN__
++#ifdef HAVE_EXECINFO_H
+ #include <execinfo.h>
+ #endif
+
+@@ -15,15 +15,18 @@
+
+ #define STSIZE 1000
+
++#ifdef HAVE_EXECINFO_H
+ #ifdef H5BACKTRACE
+ #  if !defined _WIN32 && !defined __CYGWIN__
+ static void* stacktrace[STSIZE];
+ #  endif
+ #endif
++#endif
+
+ int
+ nch5breakpoint(int err)
+ {
++#ifdef HAVE_EXECINFO_H
+ #ifdef H5BACKTRACE
+ #  if !defined _WIN32 && !defined __CYGWIN__
+     int count = 0;
+@@ -39,6 +42,7 @@ nch5breakpoint(int err)
+     if(trace != NULL) free(trace);
+ #    endif
+ #  endif
++#endif
+ #endif
+     return err;
+ }
diff --git a/sci-libs/netcdf/netcdf-4.9.0.ebuild b/sci-libs/netcdf/netcdf-4.9.0.ebuild
index 8ffc629f18a2..651ca0381223 100644
--- a/sci-libs/netcdf/netcdf-4.9.0.ebuild
+++ b/sci-libs/netcdf/netcdf-4.9.0.ebuild
@@ -36,6 +36,7 @@ REQUIRED_USE="
 
 PATCHES=(
 	"${FILESDIR}"/${PN}-4.7.4-big-endian-test.patch
+	"${FILESDIR}"/${PN}-4.9.0-fix-musl-execinfo_h.patch
 )
 
 src_configure() {
-- 
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