1 files changed, 184 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/by-name/cm/cmake/setup-hook.sh b/nixpkgs/pkgs/by-name/cm/cmake/setup-hook.sh
new file mode 100755
index 000000000000..b28ed42b6896
--- /dev/null
+++ b/nixpkgs/pkgs/by-name/cm/cmake/setup-hook.sh
@@ -0,0 +1,184 @@
+addCMakeParams() {
+    addToSearchPath CMAKE_PREFIX_PATH $1
+}
+
+fixCmakeFiles() {
+    # Replace occurences of /usr and /opt by /var/empty.
+    echo "fixing cmake files..."
+    find "$1" \( -type f -name "*.cmake" -o -name "*.cmake.in" -o -name CMakeLists.txt \) -print |
+        while read fn; do
+            sed -e 's^/usr\([ /]\|$\)^/var/empty\1^g' -e 's^/opt\([ /]\|$\)^/var/empty\1^g' < "$fn" > "$fn.tmp"
+            mv "$fn.tmp" "$fn"
+        done
+}
+
+cmakeConfigurePhase() {
+    runHook preConfigure
+
+    # default to CMake defaults if unset
+    : ${cmakeBuildDir:=build}
+
+    export CTEST_OUTPUT_ON_FAILURE=1
+    if [ -n "${enableParallelChecking-1}" ]; then
+        export CTEST_PARALLEL_LEVEL=$NIX_BUILD_CORES
+    fi
+
+    if [ -z "${dontFixCmake-}" ]; then
+        fixCmakeFiles .
+    fi
+
+    if [ -z "${dontUseCmakeBuildDir-}" ]; then
+        mkdir -p "$cmakeBuildDir"
+        cd "$cmakeBuildDir"
+        : ${cmakeDir:=..}
+    else
+        : ${cmakeDir:=.}
+    fi
+
+    if [ -z "${dontAddPrefix-}" ]; then
+        cmakeFlags="-DCMAKE_INSTALL_PREFIX=$prefix $cmakeFlags"
+    fi
+
+    # We should set the proper `CMAKE_SYSTEM_NAME`.
+    # http://www.cmake.org/Wiki/CMake_Cross_Compiling
+    #
+    # Unfortunately cmake seems to expect absolute paths for ar, ranlib, and
+    # strip. Otherwise they are taken to be relative to the source root of the
+    # package being built.
+    cmakeFlags="-DCMAKE_CXX_COMPILER=$CXX $cmakeFlags"
+    cmakeFlags="-DCMAKE_C_COMPILER=$CC $cmakeFlags"
+    cmakeFlags="-DCMAKE_AR=$(command -v $AR) $cmakeFlags"
+    cmakeFlags="-DCMAKE_RANLIB=$(command -v $RANLIB) $cmakeFlags"
+    cmakeFlags="-DCMAKE_STRIP=$(command -v $STRIP) $cmakeFlags"
+
+    # on macOS we want to prefer Unix-style headers to Frameworks
+    # because we usually do not package the framework
+    cmakeFlags="-DCMAKE_FIND_FRAMEWORK=LAST $cmakeFlags"
+
+    # we never want to use the global macOS SDK
+    cmakeFlags="-DCMAKE_OSX_SYSROOT= $cmakeFlags"
+
+    # correctly detect our clang compiler
+    cmakeFlags="-DCMAKE_POLICY_DEFAULT_CMP0025=NEW $cmakeFlags"
+
+    # This installs shared libraries with a fully-specified install
+    # name. By default, cmake installs shared libraries with just the
+    # basename as the install name, which means that, on Darwin, they
+    # can only be found by an executable at runtime if the shared
+    # libraries are in a system path or in the same directory as the
+    # executable. This flag makes the shared library accessible from its
+    # nix/store directory.
+    cmakeFlags="-DCMAKE_INSTALL_NAME_DIR=${!outputLib}/lib $cmakeFlags"
+
+    # The docdir flag needs to include PROJECT_NAME as per GNU guidelines,
+    # try to extract it from CMakeLists.txt.
+    if [[ -z "$shareDocName" ]]; then
+        local cmakeLists="${cmakeDir}/CMakeLists.txt"
+        if [[ -f "$cmakeLists" ]]; then
+            local shareDocName="$(grep --only-matching --perl-regexp --ignore-case '\bproject\s*\(\s*"?\K([^[:space:]")]+)' < "$cmakeLists" | head -n1)"
+        fi
+        # The argument sometimes contains garbage or variable interpolation.
+        # When that is the case, let’s fall back to the derivation name.
+        if [[ -z "$shareDocName" ]] || echo "$shareDocName" | grep -q '[^a-zA-Z0-9_+-]'; then
+            if [[ -n "${pname-}" ]]; then
+                shareDocName="$pname"
+            else
+                shareDocName="$(echo "$name" | sed 's/-[^a-zA-Z].*//')"
+            fi
+        fi
+    fi
+
+    # This ensures correct paths with multiple output derivations
+    # It requires the project to use variables from GNUInstallDirs module
+    # https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html
+    cmakeFlags="-DCMAKE_INSTALL_BINDIR=${!outputBin}/bin $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_SBINDIR=${!outputBin}/sbin $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_INCLUDEDIR=${!outputInclude}/include $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_OLDINCLUDEDIR=${!outputInclude}/include $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_MANDIR=${!outputMan}/share/man $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_INFODIR=${!outputInfo}/share/info $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_DOCDIR=${!outputDoc}/share/doc/${shareDocName} $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_LIBDIR=${!outputLib}/lib $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_LIBEXECDIR=${!outputLib}/libexec $cmakeFlags"
+    cmakeFlags="-DCMAKE_INSTALL_LOCALEDIR=${!outputLib}/share/locale $cmakeFlags"
+
+    # Don’t build tests when doCheck = false
+    if [ -z "${doCheck-}" ]; then
+        cmakeFlags="-DBUILD_TESTING=OFF $cmakeFlags"
+    fi
+
+    # Always build Release, to ensure optimisation flags
+    cmakeFlags="-DCMAKE_BUILD_TYPE=${cmakeBuildType:-Release} $cmakeFlags"
+
+    # Disable user package registry to avoid potential side effects
+    # and unecessary attempts to access non-existent home folder
+    # https://cmake.org/cmake/help/latest/manual/cmake-packages.7.html#disabling-the-package-registry
+    cmakeFlags="-DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON $cmakeFlags"
+    cmakeFlags="-DCMAKE_FIND_USE_PACKAGE_REGISTRY=OFF $cmakeFlags"
+    cmakeFlags="-DCMAKE_FIND_USE_SYSTEM_PACKAGE_REGISTRY=OFF $cmakeFlags"
+
+    if [ "${buildPhase-}" = ninjaBuildPhase ]; then
+        cmakeFlags="-GNinja $cmakeFlags"
+    fi
+
+    echo "cmake flags: $cmakeFlags ${cmakeFlagsArray[@]}"
+
+    cmake "$cmakeDir" $cmakeFlags "${cmakeFlagsArray[@]}"
+
+    if ! [[ -v enableParallelBuilding ]]; then
+        enableParallelBuilding=1
+        echo "cmake: enabled parallel building"
+    fi
+
+    if ! [[ -v enableParallelInstalling ]]; then
+        enableParallelInstalling=1
+        echo "cmake: enabled parallel installing"
+    fi
+
+    runHook postConfigure
+}
+
+if [ -z "${dontUseCmakeConfigure-}" -a -z "${configurePhase-}" ]; then
+    setOutputFlags=
+    configurePhase=cmakeConfigurePhase
+fi
+
+addEnvHooks "$targetOffset" addCMakeParams
+
+makeCmakeFindLibs(){
+  isystem_seen=
+  iframework_seen=
+  for flag in ${NIX_CFLAGS_COMPILE-} ${NIX_LDFLAGS-}; do
+    if test -n "$isystem_seen" && test -d "$flag"; then
+      isystem_seen=
+      export CMAKE_INCLUDE_PATH="${CMAKE_INCLUDE_PATH-}${CMAKE_INCLUDE_PATH:+:}${flag}"
+    elif test -n "$iframework_seen" && test -d "$flag"; then
+      iframework_seen=
+      export CMAKE_FRAMEWORK_PATH="${CMAKE_FRAMEWORK_PATH-}${CMAKE_FRAMEWORK_PATH:+:}${flag}"
+    else
+      isystem_seen=
+      iframework_seen=
+      case $flag in
+        -I*)
+          export CMAKE_INCLUDE_PATH="${CMAKE_INCLUDE_PATH-}${CMAKE_INCLUDE_PATH:+:}${flag:2}"
+          ;;
+        -L*)
+          export CMAKE_LIBRARY_PATH="${CMAKE_LIBRARY_PATH-}${CMAKE_LIBRARY_PATH:+:}${flag:2}"
+          ;;
+        -F*)
+          export CMAKE_FRAMEWORK_PATH="${CMAKE_FRAMEWORK_PATH-}${CMAKE_FRAMEWORK_PATH:+:}${flag:2}"
+          ;;
+        -isystem)
+          isystem_seen=1
+          ;;
+        -iframework)
+          iframework_seen=1
+          ;;
+      esac
+    fi
+  done
+}
+
+# not using setupHook, because it could be a setupHook adding additional
+# include flags to NIX_CFLAGS_COMPILE
+postHooks+=(makeCmakeFindLibs)