From 8449402f77556af669063726e55a7e65c3809da6 Mon Sep 17 00:00:00 2001
From: Miro Hrončok <miro@hroncok.cz>
Date: Feb 19 2019 15:14:21 +0000
Subject: Reduced default build flags used to build extension modules


Utilize extension_...flags for extension builds.

See https://fedoraproject.org/wiki/Changes/Python_Extension_Flags

Depends on https://src.fedoraproject.org/rpms/redhat-rpm-config/c/e80fa1344a49662fec08d650debf793048c87429

---

diff --git a/python38.spec b/python38.spec
index 942b233..b06ab0f 100644
--- a/python38.spec
+++ b/python38.spec
@@ -17,7 +17,7 @@ URL: https://www.python.org/
 %global prerel a1
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: Python
 
 
@@ -170,6 +170,7 @@ BuildRequires: ncurses-devel
 BuildRequires: openssl-devel
 BuildRequires: pkgconfig
 BuildRequires: readline-devel
+BuildRequires: redhat-rpm-config >= 127
 BuildRequires: sqlite-devel
 BuildRequires: gdb
 
@@ -406,12 +407,6 @@ Requires: python3-rpm-generators
 # See https://fedoraproject.org/wiki/Packaging:Directory_Replacement
 Requires: python3-setuptools
 
-# https://bugzilla.redhat.com/show_bug.cgi?id=1217376
-# https://bugzilla.redhat.com/show_bug.cgi?id=1496757
-# https://bugzilla.redhat.com/show_bug.cgi?id=1218294
-# TODO change to a specific subpackage once available (#1218294)
-Requires: redhat-rpm-config
-
 Provides: %{name}-2to3 = %{version}-%{release}
 Provides: 2to3 = %{version}-%{release}
 
@@ -507,8 +502,6 @@ so extensions for both versions can co-exist in the same directory.
 
 %else  # with flatpackage
 
-Requires: redhat-rpm-config
-
 # We'll not provide this, on purpose
 # No package in Fedora shall ever depend on flatpackage via this
 %global __requires_exclude ^python\\(abi\\) = 3\\..$
@@ -605,13 +598,21 @@ topdir=$(pwd)
 %endif
 
 # Set common compiler/linker flags
-export CFLAGS="$RPM_OPT_FLAGS -D_GNU_SOURCE -fPIC -fwrapv"
-export CXXFLAGS="$RPM_OPT_FLAGS -D_GNU_SOURCE -fPIC -fwrapv"
+# We utilize the %%extension_...flags macros here so users building C/C++
+# extensions with our python won't get all the compiler/linker flags used
+# in Fedora RPMs.
+# Standard library built here will still use the %%build_...flags,
+# Fedora packages utilizing %%py3_build will use them as well
+# https://fedoraproject.org/wiki/Changes/Python_Extension_Flags
+export CFLAGS="%{extension_cflags} -D_GNU_SOURCE -fPIC -fwrapv"
+export CFLAGS_NODIST="%{build_cflags} -D_GNU_SOURCE -fPIC -fwrapv"
+export CXXFLAGS="%{extension_cxxflags} -D_GNU_SOURCE -fPIC -fwrapv"
 export CPPFLAGS="$(pkg-config --cflags-only-I libffi)"
-export OPT="$RPM_OPT_FLAGS -D_GNU_SOURCE -fPIC -fwrapv"
+export OPT="%{extension_cflags} -D_GNU_SOURCE -fPIC -fwrapv"
 export LINKCC="gcc"
 export CFLAGS="$CFLAGS $(pkg-config --cflags openssl)"
-export LDFLAGS="$RPM_LD_FLAGS -g $(pkg-config --libs-only-L openssl)"
+export LDFLAGS="%{extension_ldflags} -g $(pkg-config --libs-only-L openssl)"
+export LDFLAGS_NODIST="%{build_ldflags} -g $(pkg-config --libs-only-L openssl)"
 
 # We can build several different configurations of Python: regular and debug.
 # Define a common function that does one build:
@@ -1478,6 +1479,10 @@ CheckPython optimized
 # ======================================================
 
 %changelog
+* Mon Feb 18 2019 Miro Hrončok <mhroncok@redhat.com> - 3.8.0~a1-3
+- Reduced default build flags used to build extension modules
+  https://fedoraproject.org/wiki/Changes/Python_Extension_Flags
+
 * Sun Feb 17 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 3.8.0~a1-2
 - Rebuild for readline 8.0