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{ lib, version, hostPlatform
, gnatboot ? null
, langAda ? false
, langJava ? false
, langJit ? false
, langGo }:
assert langJava -> lib.versionOlder version "7";
assert langAda -> gnatboot != null;
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 $CFLAGS_FOR_TARGET"
'' + lib.optionalString (lib.versionOlder version "7" && (langJava || langGo)) ''
export lib=$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'
''
|
