ghc: compile with DWARF support by default

This allows our GHCs to build programs with DWARF debug information
when -g is passed, see https://ghc.haskell.org/trac/ghc/wiki/DWARF.

Compiling with debug symbols is off by default until GHC ticket #15960
(Using -g causes differences in generated core) is fixed.

6 files changed, 36 insertions, 6 deletions

diff --git a/pkgs/development/compilers/ghc/8.2.2.nix b/pkgs/development/compilers/ghc/8.2.2.nix
index a034e4ec8dd..7c13db74c4c 100644
--- a/pkgs/development/compilers/ghc/8.2.2.nix
+++ b/pkgs/development/compilers/ghc/8.2.2.nix
@@ -8,6 +8,8 @@
 
 , libiconv ? null, ncurses
 
+, enableDwarf ? !stdenv.isDarwin, elfutils # for DWARF support
+
 , useLLVM ? !stdenv.targetPlatform.isx86 || (stdenv.targetPlatform.isMusl && stdenv.hostPlatform != stdenv.targetPlatform)
 , # LLVM is conceptually a run-time-only depedendency, but for
   # non-x86, we need LLVM to bootstrap later stages, so it becomes a
@@ -69,7 +71,8 @@ let
   # Splicer will pull out correct variations
   libDeps = platform: [ ncurses ]
     ++ stdenv.lib.optional (!enableIntegerSimple) gmp
-    ++ stdenv.lib.optional (platform.libc != "glibc") libiconv;
+    ++ stdenv.lib.optional (platform.libc != "glibc") libiconv
+    ++ stdenv.lib.optional enableDwarf elfutils;
 
   toolsForTarget = [
     pkgsBuildTarget.targetPackages.stdenv.cc
@@ -203,6 +206,8 @@ stdenv.mkDerivation (rec {
   ] ++ stdenv.lib.optionals (targetPlatform.isDarwin && targetPlatform.isAarch64) [
     # fix for iOS: https://www.reddit.com/r/haskell/comments/4ttdz1/building_an_osxi386_to_iosarm64_cross_compiler/d5qvd67/
     "--disable-large-address-space"
+  ] ++ stdenv.lib.optional enableDwarf [
+    "--enable-dwarf-unwind"
   ];
 
   # Don’t add -liconv to LDFLAGS automatically so that GHC will add it itself.
diff --git a/pkgs/development/compilers/ghc/8.4.4.nix b/pkgs/development/compilers/ghc/8.4.4.nix
index 52fb926cdc6..30353771ea6 100644
--- a/pkgs/development/compilers/ghc/8.4.4.nix
+++ b/pkgs/development/compilers/ghc/8.4.4.nix
@@ -7,6 +7,8 @@
 
 , libiconv ? null, ncurses
 
+, enableDwarf ? !stdenv.isDarwin, elfutils # for DWARF support
+
 , useLLVM ? !stdenv.targetPlatform.isx86 || (stdenv.targetPlatform.isMusl && stdenv.hostPlatform != stdenv.targetPlatform)
 , # LLVM is conceptually a run-time-only depedendency, but for
   # non-x86, we need LLVM to bootstrap later stages, so it becomes a
@@ -71,7 +73,8 @@ let
   # Splicer will pull out correct variations
   libDeps = platform: stdenv.lib.optional enableTerminfo [ ncurses ]
     ++ stdenv.lib.optional (!enableIntegerSimple) gmp
-    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
+    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv
+    ++ stdenv.lib.optional enableDwarf elfutils;
 
   toolsForTarget = [
     pkgsBuildTarget.targetPackages.stdenv.cc
@@ -180,6 +183,8 @@ stdenv.mkDerivation (rec {
   ] ++ stdenv.lib.optionals (targetPlatform.isDarwin && targetPlatform.isAarch64) [
     # fix for iOS: https://www.reddit.com/r/haskell/comments/4ttdz1/building_an_osxi386_to_iosarm64_cross_compiler/d5qvd67/
     "--disable-large-address-space"
+  ] ++ stdenv.lib.optional enableDwarf [
+    "--enable-dwarf-unwind"
   ];
 
   # Make sure we never relax`$PATH` and hooks support for compatability.
diff --git a/pkgs/development/compilers/ghc/8.6.4.nix b/pkgs/development/compilers/ghc/8.6.4.nix
index 18b2407a90b..7b6769df682 100644
--- a/pkgs/development/compilers/ghc/8.6.4.nix
+++ b/pkgs/development/compilers/ghc/8.6.4.nix
@@ -7,6 +7,8 @@
 
 , libiconv ? null, ncurses
 
+, enableDwarf ? !stdenv.isDarwin, elfutils # for DWARF support
+
 , # GHC can be built with system libffi or a bundled one.
   libffi ? null
 
@@ -76,7 +78,8 @@ let
   libDeps = platform: stdenv.lib.optional enableTerminfo [ ncurses ]
     ++ [libffi]
     ++ stdenv.lib.optional (!enableIntegerSimple) gmp
-    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
+    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv
+    ++ stdenv.lib.optional enableDwarf elfutils;
 
   toolsForTarget = [
     pkgsBuildTarget.targetPackages.stdenv.cc
@@ -179,6 +182,8 @@ stdenv.mkDerivation (rec {
     "CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold"
   ] ++ stdenv.lib.optionals (disableLargeAddressSpace) [
     "--disable-large-address-space"
+  ] ++ stdenv.lib.optional enableDwarf [
+    "--enable-dwarf-unwind"
   ];
 
   # Make sure we never relax`$PATH` and hooks support for compatability.
diff --git a/pkgs/development/compilers/ghc/8.6.5.nix b/pkgs/development/compilers/ghc/8.6.5.nix
index cdbcb8e1aed..acc97f93c63 100644
--- a/pkgs/development/compilers/ghc/8.6.5.nix
+++ b/pkgs/development/compilers/ghc/8.6.5.nix
@@ -7,6 +7,8 @@
 
 , libiconv ? null, ncurses
 
+, enableDwarf ? !stdenv.isDarwin, elfutils # for DWARF support
+
 , # GHC can be built with system libffi or a bundled one.
   libffi ? null
 
@@ -76,7 +78,8 @@ let
   libDeps = platform: stdenv.lib.optional enableTerminfo [ ncurses ]
     ++ [libffi]
     ++ stdenv.lib.optional (!enableIntegerSimple) gmp
-    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
+    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv
+    ++ stdenv.lib.optional enableDwarf elfutils;
 
   toolsForTarget = [
     pkgsBuildTarget.targetPackages.stdenv.cc
@@ -179,6 +182,8 @@ stdenv.mkDerivation (rec {
     "CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold"
   ] ++ stdenv.lib.optionals (disableLargeAddressSpace) [
     "--disable-large-address-space"
+  ] ++ stdenv.lib.optional enableDwarf [
+    "--enable-dwarf-unwind"
   ];
 
   # Make sure we never relax`$PATH` and hooks support for compatability.
diff --git a/pkgs/development/compilers/ghc/8.8.1.nix b/pkgs/development/compilers/ghc/8.8.1.nix
index 95bbab3cb3e..c80ccf72817 100644
--- a/pkgs/development/compilers/ghc/8.8.1.nix
+++ b/pkgs/development/compilers/ghc/8.8.1.nix
@@ -7,6 +7,8 @@
 
 , libiconv ? null, ncurses
 
+, enableDwarf ? !stdenv.isDarwin, elfutils # for DWARF support
+
 , # GHC can be built with system libffi or a bundled one.
   libffi ? null
 
@@ -76,7 +78,8 @@ let
   libDeps = platform: stdenv.lib.optional enableTerminfo [ ncurses ]
     ++ [libffi]
     ++ stdenv.lib.optional (!enableIntegerSimple) gmp
-    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
+    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv
+    ++ stdenv.lib.optional enableDwarf elfutils;
 
   toolsForTarget = [
     pkgsBuildTarget.targetPackages.stdenv.cc
@@ -164,6 +167,8 @@ stdenv.mkDerivation (rec {
     "CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold"
   ] ++ stdenv.lib.optionals (disableLargeAddressSpace) [
     "--disable-large-address-space"
+  ] ++ stdenv.lib.optional enableDwarf [
+    "--enable-dwarf-unwind"
   ];
 
   # Make sure we never relax`$PATH` and hooks support for compatability.
diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index b78f5bc2204..240b55deb68 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -7,6 +7,8 @@
 
 , libiconv ? null, ncurses
 
+, enableDwarf ? !stdenv.isDarwin, elfutils # for DWARF support
+
 , useLLVM ? !stdenv.targetPlatform.isx86
 , # LLVM is conceptually a run-time-only depedendency, but for
   # non-x86, we need LLVM to bootstrap later stages, so it becomes a
@@ -73,7 +75,8 @@ let
   # Splicer will pull out correct variations
   libDeps = platform: stdenv.lib.optional enableTerminfo [ ncurses ]
     ++ stdenv.lib.optional (!enableIntegerSimple) gmp
-    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
+    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv
+    ++ stdenv.lib.optional enableDwarf elfutils;
 
   toolsForTarget = [
     pkgsBuildTarget.targetPackages.stdenv.cc
@@ -176,6 +179,8 @@ stdenv.mkDerivation (rec {
     "CONF_GCC_LINKER_OPTS_STAGE2=-fuse-ld=gold"
   ] ++ stdenv.lib.optionals (disableLargeAddressSpace) [
     "--disable-large-address-space"
+  ] ++ stdenv.lib.optional enableDwarf [
+    "--enable-dwarf-unwind"
   ];
 
   # Make sure we never relax`$PATH` and hooks support for compatability.