From 95570a64dc0636692f88370d7d747b96105403be Mon Sep 17 00:00:00 2001
From: Yureka <yuka@yuka.dev>
Date: Fri, 3 Dec 2021 18:36:06 +0100
Subject: [PATCH] lvm2: allow building static libdm

---
 pkgs/os-specific/linux/lvm2/common.nix     | 33 +++++++++++++++++-----
 pkgs/os-specific/linux/lvm2/no-shared.diff | 25 ++++++++++++++++
 2 files changed, 51 insertions(+), 7 deletions(-)
 create mode 100644 pkgs/os-specific/linux/lvm2/no-shared.diff

diff --git a/pkgs/os-specific/linux/lvm2/common.nix b/pkgs/os-specific/linux/lvm2/common.nix
index 2c8014d700a0..5ee368c242fd 100644
--- a/pkgs/os-specific/linux/lvm2/common.nix
+++ b/pkgs/os-specific/linux/lvm2/common.nix
@@ -9,7 +9,8 @@
 , libaio
 , enableCmdlib ? false
 , enableDmeventd ? false
-, udev ? null
+, udevSupport ? !stdenv.targetPlatform.isStatic, udev ? null
+, onlyLib ? stdenv.targetPlatform.isStatic
 , nixosTests
 }:
 
@@ -26,7 +27,13 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ udev libuuid libaio ];
+  buildInputs = [
+    libaio
+  ] ++ lib.optionals udevSupport [
+    udev
+  ] ++ lib.optionals (!onlyLib) [
+    libuuid
+  ];
 
   configureFlags = [
     "--disable-readline"
@@ -46,10 +53,11 @@ stdenv.mkDerivation rec {
   ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
     "ac_cv_func_malloc_0_nonnull=yes"
     "ac_cv_func_realloc_0_nonnull=yes"
-  ] ++
-  lib.optionals (udev != null) [
+  ] ++ lib.optionals udevSupport [
     "--enable-udev_rules"
     "--enable-udev_sync"
+  ] ++ lib.optionals stdenv.targetPlatform.isStatic [
+    "--enable-static_link"
   ];
 
   preConfigure = ''
@@ -78,30 +86,41 @@ stdenv.mkDerivation rec {
       url = "https://git.alpinelinux.org/aports/plain/main/lvm2/mallinfo.patch?h=3.7-stable&id=31bd4a8c2dc00ae79a821f6fe0ad2f23e1534f50";
       sha256 = "0g6wlqi215i5s30bnbkn8w7axrs27y3bnygbpbnf64wwx7rxxlj0";
     })
+  ] ++ lib.optionals stdenv.targetPlatform.isStatic [
+    ./no-shared.diff
   ];
 
   doCheck = false; # requires root
 
-  makeFlags = lib.optionals (udev != null) [
+  makeFlags = lib.optionals udevSupport [
     "SYSTEMD_GENERATOR_DIR=$(out)/lib/systemd/system-generators"
+  ] ++ lib.optionals onlyLib [
+    "libdm.device-mapper"
   ];
 
   # To prevent make install from failing.
   installFlags = [ "OWNER=" "GROUP=" "confdir=$(out)/etc" ];
 
   # Install systemd stuff.
-  installTargets = [ "install" ] ++ lib.optionals (udev != null) [
+  installTargets = [ "install" ] ++ lib.optionals udevSupport [
     "install_systemd_generators"
     "install_systemd_units"
     "install_tmpfiles_configuration"
   ];
 
+  installPhase = lib.optionalString onlyLib ''
+    install -D -t $out/lib libdm/ioctl/libdevmapper.${if stdenv.targetPlatform.isStatic then "a" else "so"}
+    make -C libdm install_include
+    make -C libdm install_pkgconfig
+  '';
+
   # only split bin and lib out from out if cmdlib isn't enabled
   outputs = [
     "out"
+  ] ++ lib.optionals (!onlyLib) [
     "dev"
     "man"
-  ] ++ lib.optionals (enableCmdlib != true) [
+  ] ++ lib.optionals (!onlyLib && !enableCmdlib) [
     "bin"
     "lib"
   ];
diff --git a/pkgs/os-specific/linux/lvm2/no-shared.diff b/pkgs/os-specific/linux/lvm2/no-shared.diff
new file mode 100644
index 000000000000..d40dd85dfc62
--- /dev/null
+++ b/pkgs/os-specific/linux/lvm2/no-shared.diff
@@ -0,0 +1,25 @@
+diff --git a/libdm/Makefile.in b/libdm/Makefile.in
+index 66ec39513..ab7123dae 100644
+--- a/libdm/Makefile.in
++++ b/libdm/Makefile.in
+@@ -44,7 +44,6 @@ endif
+ 
+ LIB_SHARED = $(interface)/libdevmapper.$(LIB_SUFFIX)
+ LIB_VERSION = $(LIB_VERSION_DM)
+-TARGETS = libdevmapper.$(LIB_SUFFIX) libdevmapper.$(LIB_SUFFIX).$(LIB_VERSION)
+ 
+ CFLOW_LIST = $(SOURCES)
+ CFLOW_LIST_TARGET = libdevmapper.cflow
+diff --git a/make.tmpl.in b/make.tmpl.in
+index e7780e8d4..ca4aa9fdd 100644
+--- a/make.tmpl.in
++++ b/make.tmpl.in
+@@ -346,7 +346,7 @@ SUBDIRS.cflow := $(SUBDIRS:=.cflow)
+ SUBDIRS.clean := $(SUBDIRS:=.clean)
+ SUBDIRS.distclean := $(SUBDIRS:=.distclean)
+ 
+-TARGETS += $(LIB_SHARED) $(LIB_STATIC)
++TARGETS += $(LIB_STATIC)
+ 
+ all: $(SUBDIRS) $(TARGETS)
+