From b72de63a50fcd46ec290b0028f47f1f9f00b7a9b Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Sat, 26 Mar 2022 12:50:53 +0100
Subject: extra/meson: local arch-meson script and patch for no LTO for i486

---
 extra/meson/PKGBUILD   | 20 ++++++++------------
 extra/meson/arch-meson | 21 +++++++++++++++++++++
 2 files changed, 29 insertions(+), 12 deletions(-)
 create mode 100755 extra/meson/arch-meson

diff --git a/extra/meson/PKGBUILD b/extra/meson/PKGBUILD
index 74cfa56b..376dd629 100644
--- a/extra/meson/PKGBUILD
+++ b/extra/meson/PKGBUILD
@@ -17,15 +17,11 @@ checkdepends_pentium4=("${checkdepends_i686[@]}")
 unset check
 unset checkdepends
 
-# do not set b_lto to true in arch-meson wrapper on i486 
-if [ "${CARCH}" = "i486" ]; then
-  eval "$(
-    {
-      declare -f package || \
-      printf 'package() {\n}\n'
-    } \
-    | sed '
-      $i sed -i "s/b_lto=.*/b_lto=false/" "$pkgdir/usr/bin/arch-meson"
-    '
-  )"
-fi
+# fail if upstream changes arch-meson
+# we patch a version of arch-meson reading CARCH (later maybe LTOFLAGS)
+# to find out whether it should add blto to the arch flags
+for ((i=0; i<${#sha512sums[@]}; i++)); do
+  if [ "${sha512sums[${i}]}" = 'f451f8a7ef9cf1dd724c2ce20bb85a3f1611b87b2e7a17ef0fdbe8ab82a67389f818ea30a5adfe8413143e4eac77ea2e0b8234b5b2466b41a892e2bd0435376c' ]; then
+    sha512sums[${i}]='4b389796c52a5aa84a05cecc9b0c87924992627a61faf1707624f157d03315df143a562bec982d3ad7c64a7de767fce56567e718005cb92e297672d37b39230e'
+  fi
+done
diff --git a/extra/meson/arch-meson b/extra/meson/arch-meson
new file mode 100755
index 00000000..577edca4
--- /dev/null
+++ b/extra/meson/arch-meson
@@ -0,0 +1,21 @@
+#!/bin/bash -ex
+# Highly opinionated wrapper for Arch Linux packaging
+
+CARCH=$(. /etc/makepkg.conf; echo $CARCH)
+
+if [ "${CARCH}" =  "i486" ]; then
+  LTO="b_lto=false"
+else
+  LTO="b_lto=true"
+fi
+
+exec meson setup \
+  --prefix        /usr \
+  --libexecdir    lib \
+  --sbindir       bin \
+  --buildtype     plain \
+  --auto-features enabled \
+  --wrap-mode     nodownload \
+  -D              "${LTO}" \
+  -D              b_pie=true \
+  "$@"
-- 
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