dev-util/scons: Try to force CC/CXX/CFLAGS/... for Gentoo builds

1 files changed, 85 insertions, 0 deletions

diff --git a/dev-util/scons/files/scons-3.0.1-respect-cc-etc.patch b/dev-util/scons/files/scons-3.0.1-respect-cc-etc.patch
new file mode 100644
index 000000000000..345f39ca548e
--- /dev/null
+++ b/dev-util/scons/files/scons-3.0.1-respect-cc-etc.patch
@@ -0,0 +1,85 @@
+From 7dca875d157f477e05a652f4f1dd1b6903d9dc0a Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
+Date: Thu, 10 May 2018 08:01:08 +0200
+Subject: [PATCH] posix: Also force common toolchain vars for Gentoo
+
+---
+ src/engine/SCons/Platform/posix.py | 17 +++++++++++++++++
+ src/engine/SCons/Tool/cc.py        |  3 ++-
+ src/engine/SCons/Tool/cxx.py       |  3 ++-
+ src/engine/SCons/Tool/link.py      |  3 ++-
+ 4 files changed, 23 insertions(+), 3 deletions(-)
+
+diff --git a/src/engine/SCons/Platform/posix.py b/src/engine/SCons/Platform/posix.py
+index af34650c..ee7f96d5 100644
+--- a/src/engine/SCons/Platform/posix.py
++++ b/src/engine/SCons/Platform/posix.py
+@@ -93,6 +93,23 @@ def generate(env):
+         if 'ENV' in env:
+             new_env.update(env['ENV'])
+         env['ENV'] = new_env
++
++        # Furthermore, force common compiler/linker variables as well
++        envvar_mapping = {
++            'AR': 'AR',
++            'AS': 'AS',
++            'AS': 'ASFLAGS',
++            'CC': 'CC',
++            'CXX': 'CXX',
++            'CFLAGS': 'CFLAGS',
++            'CXXFLAGS': 'CXXFLAGS',
++            'CPPFLAGS': 'CPPFLAGS',
++            'LDFLAGS': 'LINKFLAGS',
++        }
++
++        for envvar, toolvar in envvar_mapping.items():
++            if toolvar not in env and envvar in env['ENV']:
++                env[toolvar] = env['ENV'][envvar]
+     else:
+         if 'ENV' not in env:
+             env['ENV']        = {}
+diff --git a/src/engine/SCons/Tool/cc.py b/src/engine/SCons/Tool/cc.py
+index 590ec5fd..5f9229a0 100644
+--- a/src/engine/SCons/Tool/cc.py
++++ b/src/engine/SCons/Tool/cc.py
+@@ -80,7 +80,8 @@ def generate(env):
+ 
+     if 'CC' not in env:
+         env['CC']    = env.Detect(compilers) or compilers[0]
+-    env['CFLAGS']    = SCons.Util.CLVar('')
++    if 'CFLAGS' not in env:
++        env['CFLAGS'] = SCons.Util.CLVar('')
+     env['CCCOM']     = '$CC -o $TARGET -c $CFLAGS $CCFLAGS $_CCCOMCOM $SOURCES'
+     env['SHCC']      = '$CC'
+     env['SHCFLAGS'] = SCons.Util.CLVar('$CFLAGS')
+diff --git a/src/engine/SCons/Tool/cxx.py b/src/engine/SCons/Tool/cxx.py
+index 430851c8..ca5ab563 100644
+--- a/src/engine/SCons/Tool/cxx.py
++++ b/src/engine/SCons/Tool/cxx.py
+@@ -74,7 +74,8 @@ def generate(env):
+ 
+     if 'CXX' not in env:
+         env['CXX']    = env.Detect(compilers) or compilers[0]
+-    env['CXXFLAGS']   = SCons.Util.CLVar('')
++    if 'CXXFLAGS' not in env:
++        env['CXXFLAGS'] = SCons.Util.CLVar('')
+     env['CXXCOM']     = '$CXX -o $TARGET -c $CXXFLAGS $CCFLAGS $_CCCOMCOM $SOURCES'
+     env['SHCXX']      = '$CXX'
+     env['SHCXXFLAGS'] = SCons.Util.CLVar('$CXXFLAGS')
+diff --git a/src/engine/SCons/Tool/link.py b/src/engine/SCons/Tool/link.py
+index 07e92507..614d1779 100644
+--- a/src/engine/SCons/Tool/link.py
++++ b/src/engine/SCons/Tool/link.py
+@@ -292,7 +292,8 @@ def generate(env):
+     env.Append(SHLIBEMITTER = [shlib_emitter])
+     env['SMARTLINK']   = smart_link
+     env['LINK']        = "$SMARTLINK"
+-    env['LINKFLAGS']   = SCons.Util.CLVar('')
++    if 'LINKFLAGS' not in env:
++        env['LINKFLAGS'] = SCons.Util.CLVar('')
+     # __RPATH is only set to something ($_RPATH typically) on platforms that support it.
+     env['LINKCOM']     = '$LINK -o $TARGET $LINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
+     env['LIBDIRPREFIX']='-L'
+-- 
+2.17.0
+