mpich/0001-pkgconf-remove-optimization-and-link-flags-from-pkgc.patch

From cb3e5715326c43779b51e1cab1519282c50199c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Tue, 8 Feb 2022 10:19:12 +0100
Subject: [PATCH 1/4] pkgconf: remove optimization and link flags from pkgconf
 file

Those flags are generally something "private" to a particular build. If we build
mpich with -O2, it does not mean that some other program using the library should
be built with -O2.

In package builds in Fedora we ended up with:

WRAPPER_LDFLAGS = -Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -Wl,--build-id=sha1 -Wl,-dT,/builddir/build/BUILD/mpich-3.4.1/.package_note-mpich-3.4.1-11.fc36.x86_64.ld -Lsystem/lib

WRAPPER_CFLAGS = -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64  -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection

None of those are appropriate to be exported to dependent projects.
For https://fedoraproject.org/wiki/Changes/Package_information_on_ELF_objects.
---
 src/packaging/pkgconfig/mpich.pc.in | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/packaging/pkgconfig/mpich.pc.in b/src/packaging/pkgconfig/mpich.pc.in
index e905ff2e20..ff6dc35807 100644
--- a/src/packaging/pkgconfig/mpich.pc.in
+++ b/src/packaging/pkgconfig/mpich.pc.in
@@ -9,12 +9,12 @@ Description: High Performance and portable MPI
 Version: @MPICH_VERSION@
 URL: http://www.mcs.anl.gov/research/projects/mpich
 Requires:
-Libs: @WRAPPER_C_DYNAMIC_LOADING_FLAGS@ @WRAPPER_LDFLAGS@ -L${libdir} -l@MPILIBNAME@ @LPMPILIBNAME@ @WRAPPER_LIBS@
-Cflags: @WRAPPER_CPPFLAGS@ @WRAPPER_CFLAGS@ -I${includedir}
+Libs: @WRAPPER_C_DYNAMIC_LOADING_FLAGS@ -L${libdir} -l@MPILIBNAME@ @LPMPILIBNAME@
+Cflags: @WRAPPER_CPPFLAGS@ -I${includedir}
 
 # pkg-config does not understand Cxxflags, etc. So we allow users to
 # query them using the --variable option
 
-cxxflags=@WRAPPER_CPPFLAGS@ @WRAPPER_CXXFLAGS@ -I${includedir}
-fflags=@WRAPPER_FFLAGS@ -I${includedir}
-fcflags=@WRAPPER_FCFLAGS@ -I${includedir}
+cxxflags=@WRAPPER_CPPFLAGS@ -I${includedir}
+fflags=-I${includedir}
+fcflags=-I${includedir}