sys-devel/lld: ixup zlib, zstd handling

From the LLVM docs:
```
LLVM_ENABLE_ZLIB:STRING
Used to decide if LLVM tools should support compression/decompression with zlib. Allowed values are OFF, ON (default, enable if zlib is found), and FORCE_ON (error if zlib is not found).

LLVM_ENABLE_ZSTD:STRING
Used to decide if LLVM tools should support compression/decompression with zstd. Allowed values are OFF, ON (default, enable if zstd is found), and FORCE_ON (error if zstd is not found).
```

We had a user report that they had an LLVM / LLD built without zlib support
despite the unconditional RDEPEND we have. Use FORCE_ON so we bail out at
configure/build time rather than silently buliding without it if the system's
zlib is broken.

Ditto zstd.

Bug: https://bugs.gentoo.org/873526
Signed-off-by: Sam James <sam@gentoo.org>

7 files changed, 20 insertions, 7 deletions

diff --git a/sys-devel/lld/lld-15.0.7.ebuild b/sys-devel/lld/lld-15.0.7.ebuild
index 9f1faebcbbbf..51a6a5bb778c 100644
--- a/sys-devel/lld/lld-15.0.7.ebuild
+++ b/sys-devel/lld/lld-15.0.7.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -69,6 +69,7 @@ src_configure() {
 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_INCLUDE_TESTS=$(usex test)
 		-DLLVM_MAIN_SRC_DIR="${WORKDIR}/llvm"
+		-DLLVM_ENABLE_ZLIB=FORCE_ON
 	)
 
 	use test && mycmakeargs+=(
diff --git a/sys-devel/lld/lld-16.0.6.ebuild b/sys-devel/lld/lld-16.0.6.ebuild
index 274f0ff243dd..ab2cbc982c7f 100644
--- a/sys-devel/lld/lld-16.0.6.ebuild
+++ b/sys-devel/lld/lld-16.0.6.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -70,6 +70,8 @@ src_configure() {
 		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_INCLUDE_TESTS=$(usex test)
+		-DLLVM_ENABLE_ZLIB=FORCE_ON
+		-DLLVM_ENABLE_ZSTD=$(usex zstd FORCE_ON OFF)
 	)
 
 	use test && mycmakeargs+=(
diff --git a/sys-devel/lld/lld-17.0.6.ebuild b/sys-devel/lld/lld-17.0.6.ebuild
index 7289e547c49a..a6c8e30c0d8c 100644
--- a/sys-devel/lld/lld-17.0.6.ebuild
+++ b/sys-devel/lld/lld-17.0.6.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -68,6 +68,8 @@ src_configure() {
 		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_INCLUDE_TESTS=$(usex test)
+		-DLLVM_ENABLE_ZLIB=FORCE_ON
+		-DLLVM_ENABLE_ZSTD=$(usex zstd FORCE_ON OFF)
 	)
 
 	use test && mycmakeargs+=(
diff --git a/sys-devel/lld/lld-18.0.0.9999.ebuild b/sys-devel/lld/lld-18.0.0.9999.ebuild
index c99759356a66..3dd9c8c26a2e 100644
--- a/sys-devel/lld/lld-18.0.0.9999.ebuild
+++ b/sys-devel/lld/lld-18.0.0.9999.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -67,6 +67,8 @@ src_configure() {
 		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_INCLUDE_TESTS=$(usex test)
+		-DLLVM_ENABLE_ZLIB=FORCE_ON
+		-DLLVM_ENABLE_ZSTD=$(usex zstd FORCE_ON OFF)
 	)
 
 	use test && mycmakeargs+=(
diff --git a/sys-devel/lld/lld-18.0.0_pre20231215.ebuild b/sys-devel/lld/lld-18.0.0_pre20231215.ebuild
index c99759356a66..3dd9c8c26a2e 100644
--- a/sys-devel/lld/lld-18.0.0_pre20231215.ebuild
+++ b/sys-devel/lld/lld-18.0.0_pre20231215.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -67,6 +67,8 @@ src_configure() {
 		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_INCLUDE_TESTS=$(usex test)
+		-DLLVM_ENABLE_ZLIB=FORCE_ON
+		-DLLVM_ENABLE_ZSTD=$(usex zstd FORCE_ON OFF)
 	)
 
 	use test && mycmakeargs+=(
diff --git a/sys-devel/lld/lld-18.0.0_pre20231222.ebuild b/sys-devel/lld/lld-18.0.0_pre20231222.ebuild
index c99759356a66..3dd9c8c26a2e 100644
--- a/sys-devel/lld/lld-18.0.0_pre20231222.ebuild
+++ b/sys-devel/lld/lld-18.0.0_pre20231222.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -67,6 +67,8 @@ src_configure() {
 		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_INCLUDE_TESTS=$(usex test)
+		-DLLVM_ENABLE_ZLIB=FORCE_ON
+		-DLLVM_ENABLE_ZSTD=$(usex zstd FORCE_ON OFF)
 	)
 
 	use test && mycmakeargs+=(
diff --git a/sys-devel/lld/lld-18.0.0_pre20231228.ebuild b/sys-devel/lld/lld-18.0.0_pre20231228.ebuild
index c99759356a66..3dd9c8c26a2e 100644
--- a/sys-devel/lld/lld-18.0.0_pre20231228.ebuild
+++ b/sys-devel/lld/lld-18.0.0_pre20231228.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -67,6 +67,8 @@ src_configure() {
 		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}"
 		-DBUILD_SHARED_LIBS=ON
 		-DLLVM_INCLUDE_TESTS=$(usex test)
+		-DLLVM_ENABLE_ZLIB=FORCE_ON
+		-DLLVM_ENABLE_ZSTD=$(usex zstd FORCE_ON OFF)
 	)
 
 	use test && mycmakeargs+=(