--- a/db/compilers.xml	2019-06-01 21:29:57.611722804 +0200
+++ b/db/compilers.xml	2019-06-01 21:42:56.000608601 +0200
@@ -20,15 +20,15 @@
   <!--    GCC 3.x & 4.x (not for GNAT Pro)-->
   <compiler_description>
     <name>GCC</name>
-    <executable prefix="1">(.*-wrs-.*|.*-sysgo.*|.*-elf-.*|.*-eabi-.*|.*-eabispe-.*|avr-.*|.*-elinos-linux.*|.*-generic-linux-gnu-|.*mingw32.*|.*-xcoff-.*|arm-linux-androideabi-|arm-linux-gnueabi-|arm-linux-gnueabihf-|e500v2-gnu-linux-|powerpc-.*-linux.*-|.*-darwin.*-|aarch64-linux-gnu-)?gcc</executable>
+    <executable prefix="1">(.*-wrs-.*|.*-sysgo.*|.*-elf-.*|.*-eabi-.*|.*-eabispe-.*|avr-.*|.*-elinos-linux.*|.*-generic-linux-gnu-|.*mingw32.*|.*-xcoff-.*|arm-linux-androideabi-|arm-linux-gnueabi-|arm-linux-gnueabihf-|e500v2-gnu-linux-|powerpc-.*-linux.*-|.*-darwin.*-|aarch64-linux-gnu-|.*pc-linux-gnu-)?gcc-@VER@</executable>
     <version>
-      <external>${PREFIX}gcc -v</external>
+      <external>${EXEC} -v</external>
       <nogrep regexp="for GNAT Pro"></nogrep>
       <grep regexp="^gcc \S+ (\S+)" group="1"></grep>
     </version>
     <languages>C</languages>
     <target>
-      <external>${PREFIX}gcc -dumpmachine</external>
+      <external>${EXEC} -dumpmachine</external>
       <grep regexp="[^\r\n]+"></grep>
     </target>
   </compiler_description>
@@ -185,14 +185,14 @@
    -->
   <compiler_description>
     <name>GNAT</name>
-    <executable prefix="1">(.*-wrs-.*|.*-sysgo.*|.*-elf-.*|.*-eabi-.*|.*-eabispe-.*|avr-.*|.*-elinos-linux.*|.*-generic-linux-gnu-|.*mingw32.*|.*-xcoff-.*|arm-linux-androideabi-|arm-linux-gnueabi-|arm-linux-gnueabihf-|e500v2-gnu-linux-|powerpc-.*-linux.*-|.*-darwin.*-|aarch64-linux-gnu-|.*-qnx.*|.*-rtems.*)?gnatls</executable>
+    <executable prefix="1">(.*-wrs-.*|.*-sysgo.*|.*-elf-.*|.*-eabi-.*|.*-eabispe-.*|avr-.*|.*-elinos-linux.*|.*-generic-linux-gnu-|.*mingw32.*|.*-xcoff-.*|arm-linux-androideabi-|arm-linux-gnueabi-|arm-linux-gnueabihf-|e500v2-gnu-linux-|powerpc-.*-linux.*-|.*-darwin.*-|aarch64-linux-gnu-|.*-qnx.*|.*-rtems.*|.*pc-linux-gnu-)?gnatls-@VER@</executable>
     <version>
-      <external>${PREFIX}gnatls -v --version</external>
+      <external>${EXEC} -v --version</external>
       <grep regexp="^GNATLS.+?(\d+(\.\d+)?)" group="1"></grep>
     </version>
     <languages>Ada</languages>
     <variable name="gcc_version">
-      <external>${PREFIX}gcc -v</external>
+      <external>${PREFIX}gcc-@VER@ -v</external>
       <grep regexp="^[-\w]*gcc \S+ (\S+)" group="1"></grep>
     </variable>
     <runtimes default="default,kernel,native">
@@ -202,7 +202,7 @@
        <directory group="1" >\.\./$TARGET/lib/gnat/(.*)/adalib/</directory>
     </runtimes>
     <target>
-      <external>${PREFIX}gcc -dumpmachine</external>
+      <external>${PREFIX}gcc-@VER@ -dumpmachine</external>
       <grep regexp="[^\r\n]+"></grep>
     </target>
   </compiler_description>
@@ -254,7 +254,7 @@
   <!--  Generic C compiler for LLVM  -->
   <compiler_description>
     <name>C_LLVM</name>
-    <executable>clang</executable>
+    <executable>fake-clang</executable>
     <version>
       <external>clang --version</external>
 
@@ -424,7 +424,7 @@
   <!-- LLVM Compiler -->
   <compiler_description>
     <name>LLVM</name>
-    <executable>clang</executable>
+    <executable>fake-clang</executable>
     <version>
       <external>clang -v</external>
       <grep regexp=".*(LLVM|clang) version ([0-9.]*)" group="2"></grep>
--- a/db/gnat.xml	2019-06-01 21:53:53.383281607 +0200
+++ b/db/gnat.xml	2019-06-01 21:57:08.414196529 +0200
@@ -60,7 +60,7 @@
    &filter_gnat;
    <config>
    package Compiler is
-      for Driver                   ("Ada") use "${PATH(ada)}${PREFIX(ada)}gcc";
+      for Driver                   ("Ada") use "${PATH(ada)}${PREFIX(ada)}gcc-@VER@";
       for Language_Kind            ("Ada") use "unit_based";
       for Dependency_Kind          ("Ada") use "ALI_File";
       for Leading_Required_Switches        ("Ada") use
@@ -77,6 +77,9 @@
       for Objects_Path_File     ("Ada") use "ADA_PRJ_OBJECTS_FILE";
       for Driver         ("Ada") use
           "${GPRCONFIG_PREFIX}libexec/gprbuild/gprbind";
+      for Switches ("Ada") use ("--gnatbind_path=${PREFIX(ada)}gnatbind-@VER@");
+      for Required_Switches ("Ada") use
+        Binder'Required_Switches ("Ada") &amp; ("--RTS=${RUNTIME_DIR(ada)}");
    end Binder;
 
    for Toolchain_Version ("Ada") use "GNAT ${VERSION(ada)}";
--- a/db/c.xml	2019-06-01 21:57:36.244755708 +0200
+++ b/db/c.xml	2019-06-01 21:59:14.919191663 +0200
@@ -14,7 +14,7 @@
      </compilers>
      <config>
    package Compiler is
-      for Driver              ("C") use "${PATH(c)}${PREFIX(c)}gcc";
+      for Driver              ("C") use "${PATH(c)}${PREFIX(c)}gcc-@VER@";
    end Compiler;
      </config>
    </configuration>
--- a/db/linker.xml	2021-12-21 22:36:01.054738486 +0100
+++ b/db/linker.xml	2021-12-21 22:36:59.973738600 +0100
@@ -128,9 +128,13 @@
       <host name="^i686.*-linux.*$" />
     </hosts>
     <config>
-   for Object_Lister use ("nm", "-g");
+   NM := External("NM", "nm");
+   for Object_Lister use (NM, "-g");
    for Object_Lister_Matcher use " [TDRB] (.*)";
 
+   LDFLAGS := External_As_List ("LDFLAGS", " ");
+   for Leading_Library_Options use LDFLAGS;
+
    package Linker is
       for Export_File_Format use "GNU";
       for Export_File_Switch use "-Wl,--version-script=";
@@ -877,7 +877,8 @@
       <host name="^x86_64-.*linux.*" />
     </hosts>
     <config>
-   for Archive_Builder  use ("ar", "cr");
+   AR := External("AR", "ar");
+   for Archive_Builder  use (AR, "cr");
    for Archive_Builder_Append_Option use ("q");
    for Archive_Indexer  use ("ranlib");
    for Archive_Suffix   use ".a";
@@ -1211,7 +1211,7 @@
     </targets>
     <config>
    for Library_Partial_Linker use
-     ("${PATH(ada)}${PREFIX(ada)}gcc", "-nostdlib")
+     ("${PATH(ada)}${PREFIX(ada)}gcc-@VER@", "-nostdlib")
       &amp; GCC_No_Pie
       &amp; ("-Wl,-r", "-o");
     </config>
@@ -1232,7 +1232,7 @@
     </targets>
     <config>
    for Library_Partial_Linker use
-     ("${PATH(c)}${PREFIX(c)}gcc", "-nostdlib")
+     ("${PATH(c)}${PREFIX(c)}gcc-@VER@", "-nostdlib")
       &amp; GCC_No_Pie
       &amp; ("-Wl,-r", "-o");
     </config>