build: fix static linking with a hack

This causes libstore, libexpr, libfetchers, and libutil to be linked
with -Wl,--whole-archive to executables, when building statically.

libstore for the store backends, libexpr for the primops, libfetchers
for the fetcher backends I assume(?), and libutil for the nix::logger
initializer (which notably shows in pre-main constructors when HOME is
not owned by the user. cursed.).

This workaround should be removed when #359 is fixed.

Fixes #306.

Change-Id: Ie9ef0154e09a6ed97920ee8ab23810ca5e2de84c

5 files changed, 44 insertions, 4 deletions

diff --git a/src/libexpr/meson.build b/src/libexpr/meson.build
index 9a18c7ab3..e60a85b5d 100644
--- a/src/libexpr/meson.build
+++ b/src/libexpr/meson.build
@@ -162,6 +162,16 @@ liblixexpr = declare_dependency(
   link_with : libexpr,
 )
 
+# FIXME: remove when https://git.lix.systems/lix-project/lix/issues/359 is fixed.
+if is_static
+  liblixexpr_mstatic = declare_dependency(
+    include_directories : include_directories('.'),
+    link_whole : libexpr,
+  )
+else
+  liblixexpr_mstatic = liblixexpr
+endif
+
 # FIXME: not using the pkg-config module because it creates way too many deps
 # while meson migration is in progress, and we want to not include boost here
 configure_file(
diff --git a/src/libfetchers/meson.build b/src/libfetchers/meson.build
index 365bcd4a7..ee38b6cda 100644
--- a/src/libfetchers/meson.build
+++ b/src/libfetchers/meson.build
@@ -56,3 +56,13 @@ liblixfetchers = declare_dependency(
   include_directories : include_directories('.'),
   link_with : libfetchers,
 )
+
+# FIXME: remove when https://git.lix.systems/lix-project/lix/issues/359 is fixed.
+if is_static
+  liblixfetchers_mstatic = declare_dependency(
+    include_directories : include_directories('.'),
+    link_whole : libfetchers,
+  )
+else
+  liblixfetchers_mstatic = liblixfetchers
+endif
diff --git a/src/libstore/meson.build b/src/libstore/meson.build
index 65ecacc20..7a129d22c 100644
--- a/src/libstore/meson.build
+++ b/src/libstore/meson.build
@@ -234,6 +234,16 @@ liblixstore = declare_dependency(
   link_with : libstore,
 )
 
+# FIXME: remove when https://git.lix.systems/lix-project/lix/issues/359 is fixed.
+if is_static
+  liblixstore_mstatic = declare_dependency(
+    include_directories : include_directories('.'),
+    link_whole : libstore,
+  )
+else
+  liblixstore_mstatic = liblixstore
+endif
+
 # FIXME: not using the pkg-config module because it creates way too many deps
 # while meson migration is in progress, and we want to not include boost here
 configure_file(
diff --git a/src/libutil/meson.build b/src/libutil/meson.build
index cfdd0e52c..8c3377e76 100644
--- a/src/libutil/meson.build
+++ b/src/libutil/meson.build
@@ -155,3 +155,13 @@ liblixutil = declare_dependency(
   include_directories : include_directories('.'),
   link_with : libutil
 )
+
+# FIXME: remove when https://git.lix.systems/lix-project/lix/issues/359 is fixed.
+if is_static
+  liblixutil_mstatic = declare_dependency(
+    include_directories : include_directories('.'),
+    link_whole : libutil,
+  )
+else
+  liblixutil_mstatic = liblixutil
+endif
diff --git a/src/nix/meson.build b/src/nix/meson.build
index 45303641f..8115a3d08 100644
--- a/src/nix/meson.build
+++ b/src/nix/meson.build
@@ -81,10 +81,10 @@ nix = executable(
   nix2_commands_sources,
   dependencies : [
     liblixcmd,
-    liblixutil,
-    liblixstore,
-    liblixexpr,
-    liblixfetchers,
+    liblixutil_mstatic,
+    liblixstore_mstatic,
+    liblixexpr_mstatic,
+    liblixfetchers_mstatic,
     liblixmain,
     boehm,
     nlohmann_json,