[Rpm-maint] [rpm-software-management/rpm] Add support for generating buildinfo file as subpackage (#1532)

[Neal Gompa (ニール・ゴンパ)]

@Conan-Kudo commented on this pull request.



> +
+printf 'Installed-Build-Depends:\n' >> "$BUILDINFO"
+rpm -qa --queryformat '%{epoch}:%{name}-%{version}-%{release}.%{arch}\n' \
+    | LC_ALL=C sort -t: -k2 \
+    | sed -e 's/^(none)://; /\.(none)$/d; s/^/ /' >> "$BUILDINFO"
+
+printf 'Environment:\n' >> "$BUILDINFO"
+
+# Whitelist from Debian's Dpkg:
+# https://anonscm.debian.org/git/dpkg/dpkg.git/tree/scripts/Dpkg/Build/Info.pm#n50
+ENV_WHITELIST=
+
+# Toolchain.
+ENV_WHITELIST="$ENV_WHITELIST CC CPP CXX OBJC OBJCXX PC FC M2C AS LD AR RANLIB MAKE AWK LEX YACC"
+# Toolchain flags.
+ENV_WHITELIST="$ENV_WHITELIST CFLAGS CPPFLAGS CXXFLAGS OBJCFLAGS OBJCXXFLAGS GCJFLAGS FFLAGS LDFLAGS ARFLAGS MAKEFLAGS"

Then we should be capturing at the beginning of each stage, no? We need the variables rpmbuild initializes the environment with.

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