zsh: statically link the optional modules (mathfunc, regex, system, ...)

alganet · alganet · commit 297c26a23331 · 2026-06-23T00:41:44.000-03:00
A fully static binary cannot dlopen modules, so the -static build makes
configure mark every optional module link=no -- they are dropped, leaving zsh
with only its core set. This flips the buildable, libc-only modules to
link=static in the generated config.modules and runs `make prep`, compiling them
into the binary and making them usable via zmodload: mathfunc (float math
functions), regex (=~), system (syscall/sysread/zsystem flock), stat, mapfile,
files (zf_*), zselect, zpty, net/socket + net/tcp, zftp, clone, param/private,
zprof, watch, deltochar, nearcolor. (datetime, zle, complete, ... were already
link=static.)

Modules needing libraries we do not ship are deliberately left link=no:
cap-&gt;libcap, db/gdbm-&gt;libgdbm, pcre-&gt;libpcre2, and zsh/curses needs wide-char
ncurses (the in-tree build is --disable-widec). The sed no-ops on versions that
lack a given module, so one module list is safe across the whole range; older
zsh (4.0.9/4.2.7) simply gets the smaller set of modules it actually ships.

Also: --enable-multibyte (5.0+, pinned) and --enable-unicode9 (5.3.1+, in-tree
Unicode-9 width tables, no external lib). And -Dgamma=lgamma for zsh &lt;5.0, whose
mathfunc.c calls the deprecated gamma() (a historical alias for lgamma)
unconditionally -- musl dropped that symbol, so zsh/mathfunc otherwise fails to
link; the only gamma( token in the tree is that call, and the "gamma" math
function name is a string literal, so users still call gamma() and get lgamma.
5.0+ guards the call behind a configure probe and is left untouched.

Verified across the full range on both arches: all 12 versions build, the module
set loads (zmodload zsh/mathfunc -&gt; sqrt(2), =~ matches, datetime), and
verify_build_checksums passes. Regenerated checksums/build/{amd64,arm64}/zsh_*.
diff --git a/checksums/build/amd64/zsh_4.0.9/bin/zsh.sha256sums b/checksums/build/amd64/zsh_4.0.9/bin/zsh.sha256sums
@@ -1 +1 @@
-ac63a020c9f5568ad5b5b9de2a9a42ade7197b1531c906d8d66c8aae402ee8a8  zsh
+018b6fe9a660d1c3ad532cd9b78b553057b1040739c3b483c5312d49b252408f  zsh
diff --git a/checksums/build/amd64/zsh_4.2.7/bin/zsh.sha256sums b/checksums/build/amd64/zsh_4.2.7/bin/zsh.sha256sums
@@ -1 +1 @@
-ae58bf647203dc1b8d9a786094ffe8b3293d225b0ff38fd8ac71a15d0dec8eef  zsh
+b1bf4f28641e31cce5da761be0458fac0cf8bb89badba92d470cd9c03e42305b  zsh
diff --git a/checksums/build/amd64/zsh_5.0.8/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.0.8/bin/zsh.sha256sums
@@ -1 +1 @@
-203ac448cd54f0bec664b924062963efa12574a905ae0f4745fd6baca4945dfd  zsh
+24a5a7de8e33a69c3d838d8aa3291a1c886de61e6cebd0075d717d1b4b427280  zsh
diff --git a/checksums/build/amd64/zsh_5.1.1/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.1.1/bin/zsh.sha256sums
@@ -1 +1 @@
-cc8b175c0554d3312f4ef54bf580c7f781d751cb3c42dc2d0632895f7b5c1113  zsh
+9fce81a3ddcb40af8bac34a97a488ced5fc82167a57b02cc507210be37d0d477  zsh
diff --git a/checksums/build/amd64/zsh_5.2/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.2/bin/zsh.sha256sums
@@ -1 +1 @@
-0afbbff105cfa33912907088ccc2a97e75d8fbf7c537fcc9a41a899aeed1f806  zsh
+388e73e1dce0a9f54fbc43fe57e292295e1d1d6db9cd2b825c427bc9faa05ad9  zsh
diff --git a/checksums/build/amd64/zsh_5.3.1/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.3.1/bin/zsh.sha256sums
@@ -1 +1 @@
-6bad94a9c7f2bf5abeea353e4b50c4d0ed69ee0591169a78b1ecc8d00167eaa2  zsh
+447295941bf399d2c8f6dbebe043b49de7241893653e531e9a3b098cc3cccb3a  zsh
diff --git a/checksums/build/amd64/zsh_5.4.2/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.4.2/bin/zsh.sha256sums
@@ -1 +1 @@
-efca83c6c2e4dd3a95c9e3f7a307c6c1c7a0bb24c9dad32be51a126d110f4017  zsh
+395b3ea624b7acdb0fd359f5201b22afcd4a1d1d133d61455a86daccbf854113  zsh
diff --git a/checksums/build/amd64/zsh_5.5.1/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.5.1/bin/zsh.sha256sums
@@ -1 +1 @@
-8c852572ef5f4c822ec34a10c076e01f70084a9b032de8380d09c975e39fd553  zsh
+77d72cb185f00d95d983c250451feed4fd91a97b6a8724a9d18c6c9cbd456f75  zsh
diff --git a/checksums/build/amd64/zsh_5.6.2/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.6.2/bin/zsh.sha256sums
@@ -1 +1 @@
-3d3aa2fc7a4d6ba6a9f9cce11a9e63e55b0482ba979d63e5ffa6026934d3ef3d  zsh
+20de56e16e490da763fe07a8b0b75693fd76a9fad3bc879707887a99e0a72226  zsh
diff --git a/checksums/build/amd64/zsh_5.7.1/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.7.1/bin/zsh.sha256sums
@@ -1 +1 @@
-ea732eda99f123a1cabf4cbb57f4b3540024d4e37fe97007c44cf3b135f14f91  zsh
+2321a2ea779797df6345c80f167db96c445ead20d0c99bac425a7a8d587c86f9  zsh
diff --git a/checksums/build/amd64/zsh_5.8.1/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.8.1/bin/zsh.sha256sums
@@ -1 +1 @@
-6c16494d5db011c12eb791ffeab96a6da91816bcfdf66699dced5f842c4eac2e  zsh
+228362fa8d60a3faf0c4d53a9e340e48dacaf9381b418e5df35e9fababd52e53  zsh
diff --git a/checksums/build/amd64/zsh_5.9.1/bin/zsh.sha256sums b/checksums/build/amd64/zsh_5.9.1/bin/zsh.sha256sums
@@ -1 +1 @@
-f888a40f6b5012cebad7704a6ea8f122c5135e55deba4f202cf3e199db98a310  zsh
+94023095ca98e8aa0d371c553094be8891733bc01a491cebb531328628fc17e7  zsh
diff --git a/checksums/build/arm64/zsh_4.0.9/bin/zsh.sha256sums b/checksums/build/arm64/zsh_4.0.9/bin/zsh.sha256sums
@@ -1 +1 @@
-9239bff6b03a6b4d9f5b5b341d0e776ebd62ae2be629b6043e481858a4bc4b68  zsh
+9f40cc6dd9d05e0e7aba1be56a2e8abe28bcd75ddc95a341a95ad85e54912127  zsh
diff --git a/checksums/build/arm64/zsh_4.2.7/bin/zsh.sha256sums b/checksums/build/arm64/zsh_4.2.7/bin/zsh.sha256sums
@@ -1 +1 @@
-51ab2c4ec5959f326aee46566087aca3caab15986e56b506a68397bb7884cd6c  zsh
+6f58f969fc978b941e309ec2424e37380f0dac80cd38274bba4120943c3d998f  zsh
diff --git a/checksums/build/arm64/zsh_5.0.8/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.0.8/bin/zsh.sha256sums
@@ -1 +1 @@
-45f86579e80af959aaac66455085433fd64664a23795ce565457cdba47082f2a  zsh
+62ce13be5f5e78cfd62e55e64484f2ff3afb77edd17d7a9cbc61ff97c3002dc4  zsh
diff --git a/checksums/build/arm64/zsh_5.1.1/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.1.1/bin/zsh.sha256sums
@@ -1 +1 @@
-7a6b3a6e93b1590a5f370ef3fbf6e1d5ed8b34507624a75d473f34fdf859c6d4  zsh
+43938a7ed8f9dfeb5b815b5b0b9bed00d9c9cc5a1f023b57c4d7c1a0c84b2390  zsh
diff --git a/checksums/build/arm64/zsh_5.2/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.2/bin/zsh.sha256sums
@@ -1 +1 @@
-d5a83a24fcc0d263e75ba27107eb068bae6f3eb95712d610bee02ec21bb91dbc  zsh
+959c25165dd089db430fbfb15040ff41112c979280109805b97d5ac950359ce7  zsh
diff --git a/checksums/build/arm64/zsh_5.3.1/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.3.1/bin/zsh.sha256sums
@@ -1 +1 @@
-f8bab06804d985cff1d7c6f1c8b619b0596db9585526e7e94be738ea2e37e6c0  zsh
+c1a2294e054fc803b1ce26476a78953cef50d98f707dfed6ff85dcb7f99a6b46  zsh
diff --git a/checksums/build/arm64/zsh_5.4.2/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.4.2/bin/zsh.sha256sums
@@ -1 +1 @@
-13161af94c61887b8d63442e0fe9bfaef25eb774f7a4269e91956ea61b9ee31b  zsh
+486426b9aa52ca1b16b6cec8c551b7f2d18c52826b4b5b64b0d8c38e2c422139  zsh
diff --git a/checksums/build/arm64/zsh_5.5.1/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.5.1/bin/zsh.sha256sums
@@ -1 +1 @@
-7af29f6338b7f4a62c9e6982728555cd5bd4bece82567768dec2d4160f0ede13  zsh
+ab9d8c2c31de750312cf0ce561641992c4a2dab8ccd5374273e5ae6869681ab2  zsh
diff --git a/checksums/build/arm64/zsh_5.6.2/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.6.2/bin/zsh.sha256sums
@@ -1 +1 @@
-c51f121ecb87e402bbb9b39d941225b1edfc69ef6ed3020a89645f2a6c8e1745  zsh
+a58d502a912f16860c5fae721c21be45dba6a9b2ca440650e30f9f5ac81fec3a  zsh
diff --git a/checksums/build/arm64/zsh_5.7.1/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.7.1/bin/zsh.sha256sums
@@ -1 +1 @@
-58c516457aeecb3c59ce561ef9136e685643f0ed1bdf4e20d3b9e04bc4bf3a1f  zsh
+8fce6d64acf2798fed264dc30ad5b6cee83d10441e6f8450db0eef0478d9917b  zsh
diff --git a/checksums/build/arm64/zsh_5.8.1/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.8.1/bin/zsh.sha256sums
@@ -1 +1 @@
-790c3c747f0b1880fa42938895f448216546512882473d1e4122e5687bd27c9b  zsh
+42e0ecafbcd98550bc7a9aed6a4fa8f69a4bb3b312bb1d2a934d9cd3b2809ca9  zsh
diff --git a/checksums/build/arm64/zsh_5.9.1/bin/zsh.sha256sums b/checksums/build/arm64/zsh_5.9.1/bin/zsh.sha256sums
@@ -1 +1 @@
-d945a7a891ceab089f15cf1918b9fac1498de39f93d4c5156875d23f4dc7292d  zsh
+ebec291ffeeb0881f8dfb96cac2188ea05ad974d687317c5365aaa0c51261d1d  zsh
diff --git a/variants/zsh.sh b/variants/zsh.sh
@@ -115,6 +115,17 @@ shvr_build_zsh ()
 	export LDFLAGS="-Wl,--build-id=none $(shvr_ncurses_ldflags)"
 	export CPPFLAGS="$(shvr_ncurses_cflags)"
 
+	# zsh <5.0 mathfunc.c calls the deprecated gamma() (a historical alias for
+	# lgamma, i.e. log-gamma) unconditionally; musl dropped that symbol, so
+	# statically linking zsh/mathfunc fails at link with "undefined reference to
+	# gamma". Map the call to lgamma -- it is the only `gamma(` token in the tree
+	# and the "gamma" math-function name is a string literal, so users still call
+	# gamma() and get the same value. 5.0+ guards the call on a configure probe
+	# (HAVE_GAMMA), which fails cleanly under musl, so this is only needed for 4.x.
+	if test "$version_major" -lt 5
+	then export CFLAGS="${CFLAGS} -Dgamma=lgamma"
+	fi
+
 	./Util/preconfig
 
 	# Replace config.sub/config.guess with modern versions that recognize musl
@@ -123,12 +134,45 @@ shvr_build_zsh ()
 	cp "$(automake --print-libdir)/config.sub" .
 	cp "$(automake --print-libdir)/config.guess" .
 
+	# Multibyte/Unicode: --enable-multibyte (zsh 5.0+) is on by default in 5.x but
+	# pinned here; --enable-unicode9 (5.3.1+) compiles in the in-tree Unicode-9
+	# width tables (emoji/CJK widths) and needs no external library. Both are
+	# unknown to older configure but autoconf accepts unknown --enable silently,
+	# so the version gates are for cleanliness, not safety.
+	extra_flags=
+	if test "$version_major" -ge 5
+	then extra_flags="--enable-multibyte"
+	fi
+	if test "$version_major" -gt 5 ||
+		{ test "$version_major" -eq 5 && test "$version_minor" -ge 3; }
+	then extra_flags="$extra_flags --enable-unicode9"
+	fi
+
 	./configure \
 		--host="$(shvr_musl_target)" \
 		--prefix="${SHVR_DIR_OUT}/zsh_$version" \
 		--disable-dynamic \
 		--with-tcsetpgrp \
-		--with-term-lib="ncurses"
+		--with-term-lib="ncurses" \
+		$extra_flags
+
+	# A fully static binary cannot dlopen modules, so configure marks every
+	# optional module link=no (dropped). Flip the buildable, libc-only ones to
+	# link=static so they are compiled into the binary and usable via zmodload:
+	# mathfunc (float math fns), regex (=~), system (syscall/flock), stat, mapfile,
+	# files (zf_*), zselect, zpty, net/socket+net/tcp, zftp, clone, param/private,
+	# zprof, watch, deltochar, nearcolor. (datetime, zle, complete, etc. are
+	# already link=static.) Modules needing libraries we do not ship are left
+	# link=no: cap->libcap, db/gdbm->libgdbm, pcre->libpcre2, and zsh/curses needs
+	# wide-char ncurses (ours is --disable-widec). The sed no-ops on versions that
+	# lack a given module, so one list is safe across the whole range; make prep
+	# regenerates the module tables from the edited config.modules.
+	for mod in mathfunc regex stat system mapfile files zselect zpty \
+		net/socket net/tcp zftp clone param/private zprof watch deltochar nearcolor
+	do
+		sed -i "\\#name=zsh/${mod} #s/link=no/link=static/" config.modules
+	done
+	make prep
 
 	# Single-threaded build for deterministic ordering
 	make

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`@@ -1 +1 @@`
`1`		`-ac63a020c9f5568ad5b5b9de2a9a42ade7197b1531c906d8d66c8aae402ee8a8 zsh`
	`1`	`+018b6fe9a660d1c3ad532cd9b78b553057b1040739c3b483c5312d49b252408f zsh`
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`@@ -1 +1 @@`
`1`		`-ae58bf647203dc1b8d9a786094ffe8b3293d225b0ff38fd8ac71a15d0dec8eef zsh`
	`1`	`+b1bf4f28641e31cce5da761be0458fac0cf8bb89badba92d470cd9c03e42305b zsh`
Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-203ac448cd54f0bec664b924062963efa12574a905ae0f4745fd6baca4945dfd zsh`
	`1`	`+24a5a7de8e33a69c3d838d8aa3291a1c886de61e6cebd0075d717d1b4b427280 zsh`
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`@@ -1 +1 @@`
`1`		`-cc8b175c0554d3312f4ef54bf580c7f781d751cb3c42dc2d0632895f7b5c1113 zsh`
	`1`	`+9fce81a3ddcb40af8bac34a97a488ced5fc82167a57b02cc507210be37d0d477 zsh`
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`@@ -1 +1 @@`
`1`		`-0afbbff105cfa33912907088ccc2a97e75d8fbf7c537fcc9a41a899aeed1f806 zsh`
	`1`	`+388e73e1dce0a9f54fbc43fe57e292295e1d1d6db9cd2b825c427bc9faa05ad9 zsh`
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`@@ -1 +1 @@`
`1`		`-6bad94a9c7f2bf5abeea353e4b50c4d0ed69ee0591169a78b1ecc8d00167eaa2 zsh`
	`1`	`+447295941bf399d2c8f6dbebe043b49de7241893653e531e9a3b098cc3cccb3a zsh`
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`@@ -1 +1 @@`
`1`		`-efca83c6c2e4dd3a95c9e3f7a307c6c1c7a0bb24c9dad32be51a126d110f4017 zsh`
	`1`	`+395b3ea624b7acdb0fd359f5201b22afcd4a1d1d133d61455a86daccbf854113 zsh`
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`@@ -1 +1 @@`
`1`		`-8c852572ef5f4c822ec34a10c076e01f70084a9b032de8380d09c975e39fd553 zsh`
	`1`	`+77d72cb185f00d95d983c250451feed4fd91a97b6a8724a9d18c6c9cbd456f75 zsh`
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`@@ -1 +1 @@`
`1`		`-3d3aa2fc7a4d6ba6a9f9cce11a9e63e55b0482ba979d63e5ffa6026934d3ef3d zsh`
	`1`	`+20de56e16e490da763fe07a8b0b75693fd76a9fad3bc879707887a99e0a72226 zsh`
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`@@ -1 +1 @@`
`1`		`-ea732eda99f123a1cabf4cbb57f4b3540024d4e37fe97007c44cf3b135f14f91 zsh`
	`1`	`+2321a2ea779797df6345c80f167db96c445ead20d0c99bac425a7a8d587c86f9 zsh`