69 lines
3.4 KiB
Nix
69 lines
3.4 KiB
Nix
{ lib, version, hostPlatform, targetPlatform
|
|
, gnatboot ? null
|
|
, langAda ? false
|
|
, langJava ? false
|
|
, langJit ? false
|
|
, langGo }:
|
|
|
|
assert langJava -> lib.versionOlder version "7";
|
|
assert langAda -> gnatboot != null; let
|
|
needsLib
|
|
= (lib.versionOlder version "7" && (langJava || langGo))
|
|
|| (lib.versions.major version == "4" && lib.versions.minor version == "9" && targetPlatform.isDarwin);
|
|
in lib.optionalString (hostPlatform.isSunOS && hostPlatform.is64bit) ''
|
|
export NIX_LDFLAGS=`echo $NIX_LDFLAGS | sed -e s~$prefix/lib~$prefix/lib/amd64~g`
|
|
export LDFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $LDFLAGS_FOR_TARGET"
|
|
export CXXFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CXXFLAGS_FOR_TARGET"
|
|
export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET"
|
|
'' + lib.optionalString needsLib ''
|
|
export lib=$out;
|
|
'' + lib.optionalString langAda ''
|
|
export PATH=${gnatboot}/bin:$PATH
|
|
''
|
|
|
|
# NOTE 2020/3/18: This environment variable prevents configure scripts from
|
|
# detecting the presence of aligned_alloc on Darwin. There are many facts that
|
|
# collectively make this fix necessary:
|
|
# - Nix uses a fixed set of standard library headers on all MacOS systems,
|
|
# regardless of their actual version. (Nix uses version 10.12 headers.)
|
|
# - Nix uses the native standard library binaries for the build system. That
|
|
# means the standard library binaries may not exactly match the standard
|
|
# library headers.
|
|
# - The aligned_alloc procedure is present in MacOS 10.15 (Catalina), but not
|
|
# in earlier versions. Therefore on Catalina systems, aligned_alloc is
|
|
# linkable (i.e. present in the binary libraries) but not present in the
|
|
# headers.
|
|
# - Configure scripts detect a procedure's existence by checking whether it is
|
|
# linkable. They do not check whether it is present in the headers.
|
|
# - GCC throws an error during compilation because aligned_alloc is not
|
|
# defined in the headers---even though the linker can see it.
|
|
#
|
|
# This fix would not be necessary if ANY of the above were false:
|
|
# - If Nix used native headers for each different MacOS version, aligned_alloc
|
|
# would be in the headers on Catalina.
|
|
# - If Nix used the same libary binaries for each MacOS version, aligned_alloc
|
|
# would not be in the library binaries.
|
|
# - If Catalina did not include aligned_alloc, this wouldn't be a problem.
|
|
# - If the configure scripts looked for header presence as well as
|
|
# linkability, they would see that aligned_alloc is missing.
|
|
# - If GCC allowed implicit declaration of symbols, it would not fail during
|
|
# compilation even if the configure scripts did not check header presence.
|
|
#
|
|
+ lib.optionalString (hostPlatform.isDarwin) ''
|
|
export ac_cv_func_aligned_alloc=no
|
|
''
|
|
|
|
# In order to properly install libgccjit on macOS Catalina, strip(1)
|
|
# upon installation must not remove external symbols, otherwise the
|
|
# install step errors with "symbols referenced by indirect symbol
|
|
# table entries that can't be stripped".
|
|
+ lib.optionalString (hostPlatform.isDarwin && langJit) ''
|
|
export STRIP='strip -x'
|
|
''
|
|
|
|
# HACK: if host and target config are the same, but the platforms are
|
|
# actually different we need to convince the configure script that it
|
|
# is in fact building a cross compiler although it doesn't believe it.
|
|
+ lib.optionalString (targetPlatform.config == hostPlatform.config && targetPlatform != hostPlatform) ''
|
|
substituteInPlace configure --replace is_cross_compiler=no is_cross_compiler=yes
|
|
''
|