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From: Emil Velikov via B4 Relay <devnull+emil.l.velikov.gmail.com@kernel.org>
Date: Tue, 16 Jan 2024 13:52:03 +0000
Subject: [PATCH BlueZ 09/10] build: enable gc/dead code removal
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Cc: Emil Velikov <emil.velikov@collabora.com>
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From: Emil Velikov <emil.velikov@collabora.com>

Currently, there's plenty of unused code in most binaries. Enable
-fdata/function-sections, which allows the linker garbage collection to
do its job.

On a maintainer build, this reduces the (unstriped) binaries from 117 to
114MiB.
---
 acinclude.m4 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/acinclude.m4 b/acinclude.m4
index c5d6de7b3..4b73a5bfc 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -134,6 +134,8 @@ AC_DEFUN([MISC_FLAGS], [
 		misc_cflags="$misc_cflags --coverage"
 		misc_ldflags="$misc_ldflags --coverage"
 	fi
+	misc_cflags="$misc_cflags -ffunction-sections -fdata-sections"
+	misc_ldflags="$misc_ldflags -Wl,--gc-sections"
 	AC_SUBST([MISC_CFLAGS], $misc_cflags)
 	AC_SUBST([MISC_LDFLAGS], $misc_ldflags)
 ])

-- 
2.43.0