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[Qemu-devel] [PULL 18/79] configure: preserve various environment variab
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 18/79] configure: preserve various environment variables in config.status |
Date: |
Sun, 30 Sep 2018 10:12:16 +0200 |
From: Daniel P. Berrangé <address@hidden>
The config.status script is auto-generated by configure upon
completion. The intention is that config.status can be later invoked by
the developer directly, or by make indirectly, to re-detect the same
environment that configure originally used.
The current config.status script, however, only contains a record of the
command line arguments to configure. Various environment variables have
an effect on what configure will find. In particular PKG_CONFIG_LIBDIR &
PKG_CONFIG_PATH vars will affect what libraries pkg-config finds. The
PATH var will affect what toolchain binaries and XXXX-config scripts are
found. The LD_LIBRARY_PATH var will affect what libraries are
found. Most commands have env variables that will override the name/path
of the default version configure finds.
All these key env variables should be recorded in the config.status script.
Autoconf would also preserve CFLAGS, LDFLAGS, LIBS, CPPFLAGS, but QEMU
deals with those differently, expecting extra flags to be set using
configure args, rather than env variables. At the end of the script we
also don't have the original values of those env vars, as we modify them
during configure.
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Stefan Weil <address@hidden>
Signed-off-by: Daniel P. Berrange <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Thomas Huth <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Daniel P. Berrangé <address@hidden>
---
configure | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/configure b/configure
index 7fd989a..95462f8 100755
--- a/configure
+++ b/configure
@@ -7527,6 +7527,46 @@ cat <<EOD >config.status
# Compiler output produced by configure, useful for debugging
# configure, is in config.log if it exists.
EOD
+
+preserve_env() {
+ envname=$1
+
+ eval envval=\$$envname
+
+ if test -n "$envval"
+ then
+ echo "$envname='$envval'" >> config.status
+ echo "export $envname" >> config.status
+ else
+ echo "unset $envname" >> config.status
+ fi
+}
+
+# Preserve various env variables that influence what
+# features/build target configure will detect
+preserve_env AR
+preserve_env AS
+preserve_env CC
+preserve_env CPP
+preserve_env CXX
+preserve_env INSTALL
+preserve_env LD
+preserve_env LD_LIBRARY_PATH
+preserve_env LIBTOOL
+preserve_env MAKE
+preserve_env NM
+preserve_env OBJCOPY
+preserve_env PATH
+preserve_env PKG_CONFIG
+preserve_env PKG_CONFIG_LIBDIR
+preserve_env PKG_CONFIG_PATH
+preserve_env PYTHON
+preserve_env SDL_CONFIG
+preserve_env SDL2_CONFIG
+preserve_env SMBD
+preserve_env STRIP
+preserve_env WINDRES
+
printf "exec" >>config.status
printf " '%s'" "$0" "$@" >>config.status
echo ' "$@"' >>config.status
--
1.8.3.1
- [Qemu-devel] [PULL 09/79] tests: add atomic64-bench, (continued)
- [Qemu-devel] [PULL 09/79] tests: add atomic64-bench, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 16/79] hostmem-memfd: add checks before adding hostmem-memfd & properties, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 13/79] cpus: access .qemu_icount with atomic64, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 12/79] cpus: take seqlock across qemu_icount updates, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 14/79] cpus: access .qemu_icount_bias with atomic64, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 17/79] kvm: x86: Fix kvm_arch_fixup_msi_route for remap-less case, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 22/79] serial: fix DLL writes, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 10/79] qsp: use atomic64 accessors, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 15/79] dump: fix Windows dump memory run mapping, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 11/79] test-rcu-list: access n_reclaims and n_nodes_removed with atomic64, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 18/79] configure: preserve various environment variables in config.status,
Paolo Bonzini <=
- [Qemu-devel] [PULL 19/79] hw/char/sh_serial: Add timeout handling to unbreak serial input, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 21/79] util: use fcntl() for qemu_write_pidfile() locking, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 20/79] util: add qemu_write_pidfile(), Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 23/79] Delete PID file on exit, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 24/79] change get_image_size return type to int64_t, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 25/79] target/i386: move cpu_cc_srcT to DisasContext, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 28/79] target/i386: move cpu_T1 to DisasContext, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 34/79] target/i386: move cpu_tmp3_i32 to DisasContext, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 26/79] target/i386: move cpu_A0 to DisasContext, Paolo Bonzini, 2018/09/30
- [Qemu-devel] [PULL 31/79] target/i386: move cpu_ptr0 to DisasContext, Paolo Bonzini, 2018/09/30