tjh.dev
nixpkgs mirror (for testing)
github.com/NixOS/nixpkgs
nix
1{ lib, stdenv
2, targetPackages
3
4, crossStageStatic, libcCross
5, threadsCross
6, version
7
8, binutils, gmp, mpfr, libmpc, isl
9, cloog ? null
10
11, enableLTO
12, enableMultilib
13, enablePlugin
14, disableGdbPlugin ? !enablePlugin
15, enableShared
16
17, langC
18, langCC
19, langD ? false
20, langFortran
21, langJava ? false, javaAwtGtk ? false, javaAntlr ? null, javaEcj ? null
22, langAda ? false
23, langGo
24, langObjC
25, langObjCpp
26, langJit
27, disableBootstrap ? stdenv.targetPlatform != stdenv.hostPlatform
28}:
29
30assert !enablePlugin -> disableGdbPlugin;
31assert langJava -> lib.versionOlder version "7";
32
33# Note [Windows Exception Handling]
34# sjlj (short jump long jump) exception handling makes no sense on x86_64,
35# it's forcably slowing programs down as it produces a constant overhead.
36# On x86_64 we have SEH (Structured Exception Handling) and we should use
37# that. On i686, we do not have SEH, and have to use sjlj with dwarf2.
38# Hence it's now conditional on x86_32 (i686 is 32bit).
39#
40# ref: https://stackoverflow.com/questions/15670169/what-is-difference-between-sjlj-vs-dwarf-vs-seh
41
42
43let
44 inherit (stdenv)
45 buildPlatform hostPlatform targetPlatform;
46
47 # See https://github.com/NixOS/nixpkgs/pull/209870#issuecomment-1500550903
48 disableBootstrap' = disableBootstrap && !langFortran && !langGo;
49
50 crossMingw = targetPlatform != hostPlatform && targetPlatform.libc == "msvcrt";
51 crossDarwin = targetPlatform != hostPlatform && targetPlatform.libc == "libSystem";
52
53 targetPrefix = lib.optionalString (stdenv.targetPlatform != stdenv.hostPlatform)
54 "${stdenv.targetPlatform.config}-";
55
56 crossConfigureFlags =
57 # Ensure that -print-prog-name is able to find the correct programs.
58 [
59 "--with-as=${if targetPackages.stdenv.cc.bintools.isLLVM then binutils else targetPackages.stdenv.cc.bintools}/bin/${targetPlatform.config}-as"
60 "--with-ld=${targetPackages.stdenv.cc.bintools}/bin/${targetPlatform.config}-ld"
61 ]
62 ++ (if crossStageStatic then [
63 "--disable-libssp"
64 "--disable-nls"
65 "--without-headers"
66 "--disable-threads"
67 "--disable-libgomp"
68 "--disable-libquadmath"
69 "--disable-shared"
70 "--disable-libatomic" # requires libc
71 "--disable-decimal-float" # requires libc
72 "--disable-libmpx" # requires libc
73 ] ++ lib.optionals crossMingw [
74 "--with-headers=${lib.getDev libcCross}/include"
75 "--with-gcc"
76 "--with-gnu-as"
77 "--with-gnu-ld"
78 "--disable-debug"
79 "--disable-win32-registry"
80 "--enable-hash-synchronization"
81 "--enable-libssp"
82 "--disable-nls"
83 # To keep ABI compatibility with upstream mingw-w64
84 "--enable-fully-dynamic-string"
85 ] ++ lib.optionals (crossMingw && targetPlatform.isx86_32) [
86 # See Note [Windows Exception Handling]
87 "--enable-sjlj-exceptions"
88 "--with-dwarf2"
89 ] else [
90 (if crossDarwin then "--with-sysroot=${lib.getLib libcCross}/share/sysroot"
91 else "--with-headers=${lib.getDev libcCross}${libcCross.incdir or "/include"}")
92 "--enable-__cxa_atexit"
93 "--enable-long-long"
94 "--enable-threads=${if targetPlatform.isUnix then "posix"
95 else if targetPlatform.isWindows then (threadsCross.model or "win32")
96 else "single"}"
97 "--enable-nls"
98 ] ++ lib.optionals (targetPlatform.libc == "uclibc" || targetPlatform.libc == "musl") [
99 # libsanitizer requires netrom/netrom.h which is not
100 # available in uclibc.
101 "--disable-libsanitizer"
102 ] ++ lib.optional (targetPlatform.libc == "newlib" || targetPlatform.libc == "newlib-nano") "--with-newlib"
103 ++ lib.optional (targetPlatform.libc == "avrlibc") "--with-avrlibc"
104 );
105
106 configureFlags =
107 # Basic dependencies
108 [
109 "--with-gmp-include=${gmp.dev}/include"
110 "--with-gmp-lib=${gmp.out}/lib"
111 "--with-mpfr-include=${mpfr.dev}/include"
112 "--with-mpfr-lib=${mpfr.out}/lib"
113 "--with-mpc=${libmpc}"
114 ]
115 ++ lib.optionals (!crossStageStatic) [
116 (if libcCross == null
117 then "--with-native-system-header-dir=${lib.getDev stdenv.cc.libc}/include"
118 else "--with-native-system-header-dir=${lib.getDev libcCross}${libcCross.incdir or "/include"}")
119 # gcc builds for cross-compilers (build != host) or cross-built
120 # gcc (host != target) always apply the offset prefix to disentangle
121 # target headers from build or host headers:
122 # ${with_build_sysroot}${native_system_header_dir}
123 # or ${test_exec_prefix}/${target_noncanonical}/sys-include
124 # or ${with_sysroot}${native_system_header_dir}
125 # While native build (build == host == target) uses passed headers
126 # path as is:
127 # ${with_build_sysroot}${native_system_header_dir}
128 #
129 # Nixpkgs uses flat directory structure for both native and cross
130 # cases. As a result libc headers don't get found for cross case
131 # and many modern features get disabled (libssp is used instead of
132 # target-specific implementations and similar). More details at:
133 # https://github.com/NixOS/nixpkgs/pull/181802#issuecomment-1186822355
134 #
135 # We pick "/" path to effectively avoid sysroot offset and make it work
136 # as a native case.
137 "--with-build-sysroot=/"
138 ]
139
140 # Basic configuration
141 ++ [
142 # Force target prefix. The behavior if `--target` and `--host`
143 # are specified is inconsistent: Sometimes specifying `--target`
144 # always causes a prefix to be generated, sometimes it's only
145 # added if the `--host` and `--target` differ. This means that
146 # sometimes there may be a prefix even though nixpkgs doesn't
147 # expect one and sometimes there may be none even though nixpkgs
148 # expects one (since not all information is serialized into the
149 # config attribute). The easiest way out of these problems is to
150 # always set the program prefix, so gcc will conform to our
151 # expectations.
152 "--program-prefix=${targetPrefix}"
153
154 (lib.enableFeature enableLTO "lto")
155 "--disable-libstdcxx-pch"
156 "--without-included-gettext"
157 "--with-system-zlib"
158 "--enable-static"
159 "--enable-languages=${
160 lib.concatStringsSep ","
161 ( lib.optional langC "c"
162 ++ lib.optional langCC "c++"
163 ++ lib.optional langD "d"
164 ++ lib.optional langFortran "fortran"
165 ++ lib.optional langJava "java"
166 ++ lib.optional langAda "ada"
167 ++ lib.optional langGo "go"
168 ++ lib.optional langObjC "objc"
169 ++ lib.optional langObjCpp "obj-c++"
170 ++ lib.optionals crossDarwin [ "objc" "obj-c++" ]
171 ++ lib.optional langJit "jit"
172 )
173 }"
174 ]
175
176 ++ (if (enableMultilib || targetPlatform.isAvr)
177 then ["--enable-multilib" "--disable-libquadmath"]
178 else ["--disable-multilib"])
179 ++ lib.optional (!enableShared) "--disable-shared"
180 ++ lib.singleton (lib.enableFeature enablePlugin "plugin")
181 # Libcc1 is the GCC cc1 plugin for the GDB debugger which is only used by gdb
182 ++ lib.optional disableGdbPlugin "--disable-libcc1"
183
184 # Support -m32 on powerpc64le/be
185 ++ lib.optional (targetPlatform.system == "powerpc64le-linux")
186 "--enable-targets=powerpcle-linux"
187 ++ lib.optional (targetPlatform.system == "powerpc64-linux")
188 "--enable-targets=powerpc-linux"
189
190 # Fix "unknown long double size, cannot define BFP_FMT"
191 ++ lib.optional (targetPlatform.isPower && targetPlatform.isMusl)
192 "--disable-decimal-float"
193
194 # Optional features
195 ++ lib.optional (isl != null) "--with-isl=${isl}"
196 ++ lib.optionals (lib.versionOlder version "5" && cloog != null) [
197 "--with-cloog=${cloog}"
198 "--disable-cloog-version-check"
199 "--enable-cloog-backend=isl"
200 ]
201
202 # Ada options, gcc can't build the runtime library for a cross compiler
203 ++ lib.optional langAda
204 (if hostPlatform == targetPlatform
205 then "--enable-libada"
206 else "--disable-libada")
207
208 # Java options
209 ++ lib.optionals langJava [
210 "--with-ecj-jar=${javaEcj}"
211
212 # Follow Sun's layout for the convenience of IcedTea/OpenJDK. See
213 # <http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2010-April/008888.html>.
214 "--enable-java-home"
215 "--with-java-home=\${prefix}/lib/jvm/jre"
216 ]
217 ++ lib.optional javaAwtGtk "--enable-java-awt=gtk"
218 ++ lib.optional (langJava && javaAntlr != null) "--with-antlr-jar=${javaAntlr}"
219
220 ++ import ../common/platform-flags.nix { inherit (stdenv) targetPlatform; inherit lib; }
221 ++ lib.optionals (targetPlatform != hostPlatform) crossConfigureFlags
222 ++ lib.optional disableBootstrap' "--disable-bootstrap"
223
224 # Platform-specific flags
225 ++ lib.optional (targetPlatform == hostPlatform && targetPlatform.isx86_32) "--with-arch=${stdenv.hostPlatform.parsed.cpu.name}"
226 ++ lib.optional targetPlatform.isNetBSD "--disable-libssp" # Provided by libc.
227 ++ lib.optionals hostPlatform.isSunOS [
228 "--enable-long-long" "--enable-libssp" "--enable-threads=posix" "--disable-nls" "--enable-__cxa_atexit"
229 # On Illumos/Solaris GNU as is preferred
230 "--with-gnu-as" "--without-gnu-ld"
231 ]
232 ++ lib.optional (targetPlatform.libc == "musl")
233 # musl at least, disable: https://git.buildroot.net/buildroot/commit/?id=873d4019f7fb00f6a80592224236b3ba7d657865
234 "--disable-libmpx"
235 ++ lib.optionals (targetPlatform == hostPlatform && targetPlatform.libc == "musl") [
236 "--disable-libsanitizer"
237 "--disable-symvers"
238 "libat_cv_have_ifunc=no"
239 "--disable-gnu-indirect-function"
240 ]
241 ++ lib.optionals langJit [
242 "--enable-host-shared"
243 ]
244 ++ lib.optionals (langD) [
245 "--with-target-system-zlib=yes"
246 ]
247 ;
248
249in configureFlags