faust2: fix cross / strictDeps build (#370582)

pkgs/applications/audio/faust/faust2.nix

@@ -78,12 +78,24 @@ let
       passthru = { inherit wrap wrapWithBuildEnv faust2ApplBase; };
 
       preConfigure = ''
+        # include llvm-config in path
+        export PATH="${lib.getDev llvm_18}/bin:$PATH"
         cd build
-        sed -i 's@LIBNCURSES_PATH ?= .*@LIBNCURSES_PATH ?= ${ncurses_static}/lib/libncurses.a@'  Make.llvm.static
         substituteInPlace Make.llvm.static \
           --replace 'mkdir -p $@ && cd $@ && ar -x ../../$<' 'mkdir -p $@ && cd $@ && ar -x ../source/build/lib/libfaust.a && cd ../source/build/'
         substituteInPlace Make.llvm.static \
-          --replace 'rm -rf $(TMP)' ' '
+          --replace 'rm -rf $(TMP)' ' ' \
+          --replace-fail "ar" "${stdenv.cc.targetPrefix}ar"
+        sed -i 's@LIBNCURSES_PATH ?= .*@LIBNCURSES_PATH ?= ${ncurses_static}/lib/libncurses.a@'  Make.llvm.static
+        cd ..
+        shopt -s globstar
+        for f in **/Makefile **/Makefile.library **/CMakeLists.txt build/Make.llvm.static embedded/faustjava/faust2engine architecture/autodiff/autodiff.sh source/tools/faust2appls/* **/llvm.cmake tools/benchmark/faust2object; do
+          echo $f "llvm-config${lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) "-native"}"
+          substituteInPlace $f \
+            --replace-quiet "llvm-config" "llvm-config${lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) "-native"}"
+        done
+        shopt -u globstar
+        cd build
       '';
 
       cmakeFlags = [

pkgs/applications/audio/faust/faust2jaqt.nix

@@ -1,4 +1,5 @@
 {
+  bash,
   faust,
   jack2,
   qtbase,
@@ -32,6 +33,10 @@ faust.wrapWithBuildEnv {
     "faust2jackserver"
   ];
 
+  buildInputs = [
+    bash
+  ];
+
   propagatedBuildInputs = [
     jack2
     qtbase

pkgs/applications/audio/faust/faust2lv2.nix

@@ -1,4 +1,5 @@
 {
+  bash,
   boost,
   faust,
   lv2,
@@ -9,6 +10,10 @@ faust.wrapWithBuildEnv {
 
   baseName = "faust2lv2";
 
+  buildInputs = [
+    bash
+  ];
+
   propagatedBuildInputs = [
     boost
     lv2

pkgs/by-name/fa/faustPhysicalModeling/package.nix

@@ -1,6 +1,7 @@
 {
   stdenv,
   lib,
+  bash,
   fetchFromGitHub,
   faust2jaqt,
   faust2lv2,
@@ -16,28 +17,45 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-CADiJXyB4FivQjbh1nhpAVgCkTi1pW/vtXKXfL7o7xU=";
   };
 
-  buildInputs = [
+  nativeBuildInputs = [
     faust2jaqt
     faust2lv2
   ];
 
+  buildInputs = [
+    bash
+  ];
+
+  # ld: /nix/store/*-gcc-14-20241116/lib/gcc/x86_64-unknown-linux-gnu/14.2.1/crtbegin.o:
+  #  relocation R_X86_64_32 against hidden symbol `__TMC_END__' can not be used when making a PIE object
+  hardeningDisable = [ "pie" ];
+
   dontWrapQtApps = true;
 
   buildPhase = ''
+    runHook preBuild
+
     cd examples/physicalModeling
 
     for f in *MIDI.dsp; do
       faust2jaqt -time -vec -double -midi -nvoices 16 -t 99999 $f
       faust2lv2  -time -vec -double -gui -nvoices 16 -t 99999 $f
     done
+
+    runHook postBuild
   '';
 
   installPhase = ''
+    runHook preInstall
+
     mkdir -p $out/lib/lv2 $out/bin
     mv *.lv2/ $out/lib/lv2
     for f in $(find . -executable -type f); do
       cp $f $out/bin/
     done
+    patchShebangs --host $out/bin
+
+    runHook postInstall
   '';
 
   meta = with lib; {
@@ -46,5 +64,7 @@ stdenv.mkDerivation rec {
     license = licenses.mit;
     platforms = platforms.linux;
     maintainers = with maintainers; [ magnetophon ];
+    # compiles stuff for the build platform, difficult to do properly
+    broken = stdenv.hostPlatform != stdenv.buildPlatform;
   };
 }