diff --git a/projects/libgcrypt/build b/projects/libgcrypt/build
index ac272850631a212b6e9d4b634f5aff387739d353..d5e1848fb1325350e61e294279c789607f2710d6 100644
--- a/projects/libgcrypt/build
+++ b/projects/libgcrypt/build
@@ -14,8 +14,15 @@ cd /var/tmp/build/[% project %]-[% c('version') %]
 sed -i 's/^BUILD_TIMESTAMP=.*/BUILD_TIMESTAMP=2000-01-01T00:00+0000/' configure
 export SOURCE_DATE_EPOCH=$(stat -c %Y ChangeLog)
 ./configure --prefix=$distdir [% c("var/configure_opt") %][% IF c('var/windows') or c('var/osx') %] --enable-static --disable-shared[% END %]
+[% IF c("var/osx") -%]
+  export LD_PRELOAD=[% c("var/faketime_path") %]
+  export FAKETIME="[% USE date; GET date.format(c('timestamp'), format = '%Y-%m-%d %H:%M:%S') %]"
+[% END -%]
 make -j4
 make prefix=$distdir install
+[% IF c("var/osx") -%]
+  unset LD_PRELOAD
+[% END -%]
 cd /var/tmp/dist
 [% c('tar', {
         tar_src => [ project ],
diff --git a/projects/libgcrypt/config b/projects/libgcrypt/config
index d9f08febb82e361b032c67da8c4e093c67977ef5..33a49a2c45f19f1b26a0d810043c153fd6addb94 100644
--- a/projects/libgcrypt/config
+++ b/projects/libgcrypt/config
@@ -13,6 +13,10 @@ targets:
     var:
       arch_deps:
         - gettext
+  osx-x86_64:
+    var:
+      arch_deps:
+        - faketime
 input_files:
   - URL: 'ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-[% c("version") %].tar.bz2'
     sig_ext: sig
diff --git a/projects/libgpg-error/build b/projects/libgpg-error/build
index 13197865d704ad418668c32464b9c3292704b57d..e2680eb16e54a65568d091ccd96d06f518645609 100644
--- a/projects/libgpg-error/build
+++ b/projects/libgpg-error/build
@@ -13,8 +13,15 @@ echo 'int main() {}' > src/gen-posix-lock-obj.c
 [% END -%]
 export SOURCE_DATE_EPOCH=$(stat -c %Y ChangeLog)
 ./configure --prefix="$distdir" [% c("var/configure_opt") %][% IF c('var/windows') or c('var/osx') %] --enable-static --disable-shared[% END %]
+[% IF c("var/osx") -%]
+  export LD_PRELOAD=[% c("var/faketime_path") %]
+  export FAKETIME="[% USE date; GET date.format(c('timestamp'), format = '%Y-%m-%d %H:%M:%S') %]"
+[% END -%]
 make -j4
 make prefix="$distdir" install
+[% IF c("var/osx") -%]
+  unset LD_PRELOAD
+[% END -%]
 cd /var/tmp/dist
 [% c('tar', {
         tar_src => [ project ],
diff --git a/projects/libgpg-error/config b/projects/libgpg-error/config
index 07d5d22387b4ad236402f7293b2cfd7cd991e3f7..a815397d362c0271992f0950030e907e49ba88ff 100644
--- a/projects/libgpg-error/config
+++ b/projects/libgpg-error/config
@@ -13,6 +13,10 @@ targets:
     var:
       arch_deps:
         - gettext
+  osx-x86_64:
+    var:
+      arch_deps:
+        - faketime
 input_files:
   - URL: 'ftp://ftp.gnupg.org/gcrypt/libgpg-error/libgpg-error-[% c("version") %].tar.bz2'
     sig_ext: sig
diff --git a/projects/libotr/build b/projects/libotr/build
index 2f4960253a5202b7e71cca7392090212dea41e41..6edb5d14f379e327f6205e4a08714c69e7faa95b 100755
--- a/projects/libotr/build
+++ b/projects/libotr/build
@@ -15,8 +15,15 @@ tar -C /var/tmp/build -xf libotr-[% c('version') %].tar.gz
 cd /var/tmp/build/libotr-[% c('version') %]
 export SOURCE_DATE_EPOCH=$(stat -c %Y ChangeLog)
 ./configure --prefix=$distdir [% c("var/configure_opt") %]
+[% IF c("var/osx") -%]
+  export LD_PRELOAD=[% c("var/faketime_path") %]
+  export FAKETIME="[% USE date; GET date.format(c('timestamp'), format = '%Y-%m-%d %H:%M:%S') %]"
+[% END -%]
 make -j4 [% IF c("var/windows") %]LDFLAGS='-no-undefined -lssp'[% END %]
 make prefix=$distdir install
+[% IF c("var/osx") -%]
+  unset LD_PRELOAD
+[% END -%]
 cd /var/tmp/dist
 [% c('tar', {
         tar_src => [ project ],
diff --git a/projects/libotr/config b/projects/libotr/config
index 14a8ea422d23faa465e5a2957c0f41165927dc22..12cf34b7b4e7f64d89b1bf47d266b06cd9dc0883 100644
--- a/projects/libotr/config
+++ b/projects/libotr/config
@@ -17,6 +17,10 @@ targets:
       configure_opt: '--host=i686-w64-mingw32 CFLAGS="[% c("var/CFLAGS_otr") %]" LDFLAGS="[% c("var/LDFLAGS_otr") %]" CC="i686-w64-mingw32-gcc -static-libgcc"'
       CFLAGS_otr: '[% c("var/CFLAGS") %] -Wl,-Bstatic,-L/var/tmp/dist/libgcrypt/lib,-lgcrypt,-L/var/tmp/dist/libgpg-error/lib,-lgpg-error,-Bdynamic'
       LDFLAGS_otr: '[% c("var/LDFLAGS") %] -Wl,-Bstatic,-L/var/tmp/dist/libgcrypt/lib,-lgcrypt,-L/var/tmp/dist/libgpg-error/lib,-lgpg-error,-Bdynamic'
+  osx-x86_64:
+    var:
+      arch_deps:
+        - faketime
 input_files:
   - filename: 'libotr-[% c("version") %].tar.gz'
     URL: 'https://otr.cypherpunks.ca/libotr-[% c("version") %].tar.gz'