Adjust workaround

cmake/wasi-sdk-toolchain.cmake

@@ -109,9 +109,20 @@ if(WASI_SDK_LLDB)
     -DLLDB_ENABLE_LINUXPTY=OFF
   )
 
-  set(sed_inplace_flag -i)
+  set(extra_configure_commands)
-  if(CMAKE_SYSTEM_NAME STREQUAL Darwin)
+  if(CMAKE_SYSTEM_NAME STREQUAL Linux)
-    set(sed_inplace_flag -i "")
+    set(extra_configure_commands
+      # By default it looks like `libedit` tries to link to `libncurses.so` and
+      # such on Linux. This is problematic as systems may not have that
+      # installed. Turns out though at least for AlmaLinux [1] they just edit
+      # makefile and pkg-config info and it works out. Who knew! I thought
+      # one of the millions of lines in `./configure` would take care of this
+      # but apparently we're still resorting to editing things raw...
+      #
+      # [1]: https://git.almalinux.org/rpms/libedit/src/commit/3f0893c4cd8e0cbb2f556d2fad48326c9c037a6c/SPECS/libedit.spec#L44-L48
+      COMMAND sed -i "s/lncurses/ltinfo/" src/Makefile
+      COMMAND sed -i "s/ -lncurses//" libedit.pc
+    )
   endif()
 
   if (WASI_SDK_LIBEDIT)
@@ -138,16 +149,7 @@ if(WASI_SDK_LLDB)
           --disable-silent-rules
           CC=${CMAKE_C_COMPILER}
           LDFLAGS=${libedit_ldflags}
-      # By default it looks like `libedit` tries to link to `libncurses.so` and
+      ${extra_configure_commands}
-      # such on Linux. This is problematic as systems may not have that
-      # installed. Turns out though at least for AlmaLinux [1] they just edit
-      # makefile and pkg-config info and it works out. Who knew! I thought
-      # one of the millions of lines in `./configure` would take care of this
-      # but apparently we're still resorting to editing things raw...
-      #
-      # [1]: https://git.almalinux.org/rpms/libedit/src/commit/3f0893c4cd8e0cbb2f556d2fad48326c9c037a6c/SPECS/libedit.spec#L44-L48
-      COMMAND sed ${sed_inplace_flag} "s/lncurses/ltinfo/" src/Makefile
-      COMMAND sed ${sed_inplace_flag} "s/ -lncurses//" libedit.pc
       BUILD_COMMAND
         ${MAKE_EXECUTABLE} -j${nproc}