gcc: move version iteration out of all-packages.nix

This resolves a TODO previously in all-packages.nix.

1 files changed, 53 insertions, 0 deletions

diff --git a/pkgs/development/compilers/gcc/all.nix b/pkgs/development/compilers/gcc/all.nix
new file mode 100644
index 0000000000000..82a64f48c37e3
--- /dev/null
+++ b/pkgs/development/compilers/gcc/all.nix
@@ -0,0 +1,53 @@
+{ lib
+, stdenv
+, gccStdenv
+, gcc7Stdenv
+, callPackage
+, isl_0_11, isl_0_14, isl_0_17, isl_0_20
+, libcCross
+, threadsCrossFor
+, noSysDirs
+, texinfo5
+, cloog_0_18_0, cloog
+, lowPrio
+, wrapCC
+}@args:
+
+let
+  versions = import ./versions.nix;
+  gccForMajorMinorVersion = majorMinorVersion:
+    let
+      atLeast = lib.versionAtLeast majorMinorVersion;
+      attrName = "gcc${lib.replaceStrings ["."] [""] majorMinorVersion}";
+      pkg = lowPrio (wrapCC (callPackage ./default.nix ({
+        inherit noSysDirs;
+        inherit majorMinorVersion;
+        reproducibleBuild = true;
+        profiledCompiler = false;
+        libcCross = if stdenv.targetPlatform != stdenv.buildPlatform then args.libcCross else null;
+        threadsCross = if stdenv.targetPlatform != stdenv.buildPlatform then threadsCrossFor majorMinorVersion else { };
+        isl = if       stdenv.isDarwin then null
+              else if    atLeast "9"   then isl_0_20
+              else if    atLeast "7"   then isl_0_17
+              else if    atLeast "6"   then (if stdenv.targetPlatform.isRedox then isl_0_17 else isl_0_14)
+              else if    atLeast "4.9" then isl_0_11
+              else            /* "4.8" */   isl_0_14;
+      } // lib.optionalAttrs (majorMinorVersion == "4.8") {
+        texinfo = texinfo5; # doesn't validate since 6.1 -> 6.3 bump
+      } // lib.optionalAttrs (majorMinorVersion == "4.9") {
+        # Build fails on Darwin with clang
+        stdenv = if stdenv.isDarwin then gccStdenv else stdenv;
+      } // lib.optionalAttrs (!(atLeast "6")) {
+        cloog = if stdenv.isDarwin
+                then null
+                else if atLeast "4.9" then cloog_0_18_0
+                else          /* 4.8 */    cloog;
+      } // lib.optionalAttrs (atLeast "6" && !(atLeast "9")) {
+        # gcc 10 is too strict to cross compile gcc <= 8
+        stdenv = if (stdenv.targetPlatform != stdenv.buildPlatform) && stdenv.cc.isGNU then gcc7Stdenv else stdenv;
+      })));
+    in
+      lib.nameValuePair attrName pkg;
+in
+lib.listToAttrs (map gccForMajorMinorVersion versions.allMajorVersions)
+