Add information about NetBSD 6 compilation on i386

(cherry picked from commit 9a16e0a5ae88455a9b9ecc24e8308277798f4c8a)

diff --git a/PLATFORMS.md b/PLATFORMS.md
index af75b73819adbfcb480ef1a51783d9776e7b5aba..543135a4e31f5bcfed2f3606e26282c9c1388a24 100644 (file)
--- a/PLATFORMS.md
+++ b/PLATFORMS.md
@@ -95,8 +95,18 @@ armhf documentation):
   the processors to support here, therefore the recommended build option is
   `-mfpu=vfpv3-d16`.
 
-The configure command should look like this:
+The `configure` command should look like this:
 
 ```
 CFLAGS="-march=armv7-a -mfpu=vfpv3-d16 -Os -g" ./configure
 ```
+
+### NetBSD 6 i386
+
+The i386 build of NetBSD requires the `libatomic` library, available from
+the `gcc5-libs` package.  Because this library is in a non-standard path,
+its location must be specified in the `configure` command line:
+
+```
+LDFLAGS="-L/usr/pkg/gcc5/i486--netbsdelf/lib/ -Wl,-R/usr/pkg/gcc5/i486--netbsdelf/lib/" ./configure
+```