From a4a19cca5de67ffb9d50c61f3fe1273dd6aa348e Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Thu, 23 Jun 2022 05:43:49 +0100
Subject: sys-process/nmon: fix musl build

Closes: https://bugs.gentoo.org/712472
Thanks-to: Jory A. Pratt <anarchy@gentoo.org>
Signed-off-by: Sam James <sam@gentoo.org>
---
 sys-process/nmon/files/nmon-16n-musl.patch | 29 +++++++++++++++++++++++++++++
 sys-process/nmon/nmon-16n.ebuild           | 12 +++++++-----
 2 files changed, 36 insertions(+), 5 deletions(-)
 create mode 100644 sys-process/nmon/files/nmon-16n-musl.patch

diff --git a/sys-process/nmon/files/nmon-16n-musl.patch b/sys-process/nmon/files/nmon-16n-musl.patch
new file mode 100644
index 000000000000..a26008cc3bf4
--- /dev/null
+++ b/sys-process/nmon/files/nmon-16n-musl.patch
@@ -0,0 +1,29 @@
+https://bugs.gentoo.org/712472
+
+From: Mike Crute <mike@crute.us>
+Date: Sun, 31 May 2020 19:26:32 +0000
+Subject: [PATCH] Add glibc compatibility to nmon
+
+musl is missing some compatibility with glibc which this patch adds to the nmon
+source. The fstab.h header was not used and fails to build if it's included.
+
+--- a/nmon.c
++++ b/nmon.c
+@@ -42,6 +42,9 @@
+ 	pi_delayacct_blkio_ticks 
+ */
+ 
++/* Fix compatibility for glibc */ 
++#define __STRING(x) #x
++
+ /* note: RAW assumes you are using the index "i" to select the CPU */
+ #define RAW(member)      (long)((long)(p->cpuN[i].member)   - (long)(q->cpuN[i].member))
+ #define RAWTOTAL(member) (long)((long)(p->cpu_total.member) - (long)(q->cpu_total.member))
+@@ -583,7 +586,6 @@
+ int isroot = 0;
+ 
+ #include <mntent.h>
+-#include <fstab.h>
+ #include <sys/stat.h>
+ #include <sys/statfs.h>
+ #include <net/if.h>
diff --git a/sys-process/nmon/nmon-16n.ebuild b/sys-process/nmon/nmon-16n.ebuild
index f4d4553ac6e5..1aee09867d35 100644
--- a/sys-process/nmon/nmon-16n.ebuild
+++ b/sys-process/nmon/nmon-16n.ebuild
@@ -6,10 +6,10 @@ EAPI=8
 inherit flag-o-matic toolchain-funcs
 
 MY_P="lmon${PV}"
-
-DESCRIPTION="Nigel's performance MONitor for CPU, memory, network, disks, etc..."
+DESCRIPTION="Nigel's performance MONitor for CPU, memory, network, disks, etc"
 HOMEPAGE="http://nmon.sourceforge.net/"
 SRC_URI="mirror://sourceforge/${PN}/${MY_P}.c"
+S="${WORKDIR}"
 
 LICENSE="GPL-3"
 SLOT="0"
@@ -19,7 +19,9 @@ RDEPEND="sys-libs/ncurses:="
 DEPEND="${RDEPEND}"
 BDEPEND="virtual/pkgconfig"
 
-S="${WORKDIR}"
+PATCHES=(
+	"${FILESDIR}"/${PN}-16n-musl.patch
+)
 
 src_unpack() {
 	cp "${DISTDIR}"/${MY_P}.c "${S}"/${PN}.c || die
@@ -27,13 +29,13 @@ src_unpack() {
 
 src_configure() {
 	local cflags=(
-		## recommended by upstream to be always on
+		# Recommended by upstream to be always on
 		-DGETUSER
 		-DJFS
 		-DLARGEMEM
 		-DKERNEL_2_6_18
 
-		## archs
+		# Arches
 		$(usex amd64 -DX86 '')
 		$(usex x86 -DX86 '')
 		$(usex arm -DARM '')
-- 
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