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* [Qemu-devel] [PATCH] configure: Avoid non-portable 'test -o/-a'
@ 2019-02-05  2:39 Eric Blake
  2019-02-05 13:12 ` Peter Maydell
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Eric Blake @ 2019-02-05  2:39 UTC (permalink / raw)
  To: qemu-devel; +Cc: qemu-trivial, thuth

POSIX says that it is better to use &&/|| and two separate test
invocations than it is to try and use -a and -o (in fact, there
are some tests that are inherently ambiguous to parse if the
user passes in corner-case input like "(").

Since we cannot guarantee which shell runs configure, we cannot
rely on -o/-a always following bash's parser rules.

Signed-off-by: Eric Blake <eblake@redhat.com>
---
 configure | 63 +++++++++++++++++++++++++++++--------------------------
 1 file changed, 33 insertions(+), 30 deletions(-)

diff --git a/configure b/configure
index 3d89870d996..61bc70708e4 100755
--- a/configure
+++ b/configure
@@ -1834,8 +1834,8 @@ fi
 # Consult white-list to determine whether to enable werror
 # by default.  Only enable by default for git builds
 if test -z "$werror" ; then
-    if test -d "$source_path/.git" -a \
-        \( "$linux" = "yes" -o "$mingw32" = "yes" \) ; then
+    if test -d "$source_path/.git" && \
+        { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
         werror="yes"
     else
         werror="no"
@@ -2940,7 +2940,7 @@ EOF
     sdl=yes

     # static link with sdl ? (note: sdl.pc's --static --libs is broken)
-    if test "$sdl" = "yes" -a "$static" = "yes" ; then
+    if test "$sdl" = "yes" && test "$static" = "yes" ; then
       if test $? = 0 && echo $sdl_libs | grep -- -laa > /dev/null; then
          sdl_libs="$sdl_libs $(aalib-config --static-libs 2>/dev/null)"
          sdl_cflags="$sdl_cflags $(aalib-config --cflags 2>/dev/null)"
@@ -3082,7 +3082,7 @@ fi

 ##########################################
 # VNC SASL detection
-if test "$vnc" = "yes" -a "$vnc_sasl" != "no" ; then
+if test "$vnc" = "yes" && test "$vnc_sasl" != "no" ; then
   cat > $TMPC <<EOF
 #include <sasl/sasl.h>
 #include <stdio.h>
@@ -3105,7 +3105,7 @@ fi

 ##########################################
 # VNC JPEG detection
-if test "$vnc" = "yes" -a "$vnc_jpeg" != "no" ; then
+if test "$vnc" = "yes" && test "$vnc_jpeg" != "no" ; then
 cat > $TMPC <<EOF
 #include <stdio.h>
 #include <jpeglib.h>
@@ -3127,7 +3127,7 @@ fi

 ##########################################
 # VNC PNG detection
-if test "$vnc" = "yes" -a "$vnc_png" != "no" ; then
+if test "$vnc" = "yes" && test "$vnc_png" != "no" ; then
 cat > $TMPC <<EOF
 //#include <stdio.h>
 #include <png.h>
@@ -3491,7 +3491,7 @@ fi
 # This workaround is required due to a bug in pkg-config file for glib as it
 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static

-if test "$static" = yes -a "$mingw32" = yes; then
+if test "$static" = yes && test "$mingw32" = yes; then
     QEMU_CFLAGS="-DGLIB_STATIC_COMPILATION $QEMU_CFLAGS"
 fi

@@ -3584,7 +3584,7 @@ fi
 ##########################################
 # pixman support probe

-if test "$want_tools" = "no" -a "$softmmu" = "no"; then
+if test "$want_tools" = "no" && test "$softmmu" = "no"; then
   pixman_cflags=
   pixman_libs=
 elif $pkg_config --atleast-version=0.21.8 pixman-1 > /dev/null 2>&1; then
@@ -3699,7 +3699,7 @@ else
   done
 fi

-if test "$mingw32" != yes -a "$pthread" = no; then
+if test "$mingw32" != yes && test "$pthread" = no; then
   error_exit "pthread check failed" \
       "Make sure to have the pthread libs and headers installed."
 fi
@@ -3826,7 +3826,7 @@ fi
 ##########################################
 # TPM passthrough is only on x86 Linux

-if test "$targetos" = Linux && test "$cpu" = i386 -o "$cpu" = x86_64; then
+if test "$targetos" = Linux && { test "$cpu" = i386 || test "$cpu" = x86_64; }; then
   tpm_passthrough=$tpm
 else
   tpm_passthrough=no
@@ -3992,7 +3992,7 @@ EOF
   fi
 fi

-if test "$opengl" = "yes" -a "$have_x11" = "yes"; then
+if test "$opengl" = "yes" && test "$have_x11" = "yes"; then
   for target in $target_list; do
     case $target in
       lm32-softmmu) # milkymist-tmu2 requires X11 and OpenGL
@@ -4612,8 +4612,8 @@ elif compile_prog "" "$pthread_lib -lrt" ; then
   libs_qga="$libs_qga -lrt"
 fi

-if test "$darwin" != "yes" -a "$mingw32" != "yes" -a "$solaris" != yes -a \
-        "$haiku" != "yes" ; then
+if test "$darwin" != "yes" && test "$mingw32" != "yes" && \
+        test "$solaris" != yes && test "$haiku" != "yes" ; then
     libs_softmmu="-lutil $libs_softmmu"
 fi

@@ -4688,7 +4688,8 @@ fi
 ##########################################
 # check if we have VSS SDK headers for win

-if test "$mingw32" = "yes" -a "$guest_agent" != "no" -a "$vss_win32_sdk" != "no" ; then
+if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
+        test "$vss_win32_sdk" != "no" ; then
   case "$vss_win32_sdk" in
     "")   vss_win32_include="-isystem $source_path" ;;
     *\ *) # The SDK is installed in "Program Files" by default, but we cannot
@@ -4727,7 +4728,8 @@ fi
 # VSS provider from the source. It is usually unnecessary because the
 # pre-compiled .tlb file is included.

-if test "$mingw32" = "yes" -a "$guest_agent" != "no" -a "$guest_agent_with_vss" = "yes" ; then
+if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
+        test "$guest_agent_with_vss" = "yes" ; then
   if test -z "$win_sdk"; then
     programfiles="$PROGRAMFILES"
     test -n "$PROGRAMW6432" && programfiles="$PROGRAMW6432"
@@ -4743,7 +4745,7 @@ fi

 ##########################################
 # check if mingw environment provides a recent ntddscsi.h
-if test "$mingw32" = "yes" -a "$guest_agent" != "no"; then
+if test "$mingw32" = "yes" && test "$guest_agent" != "no"; then
   cat > $TMPC << EOF
 #include <windows.h>
 #include <ntddscsi.h>
@@ -4790,7 +4792,7 @@ case "$capstone" in
   "" | yes)
     if $pkg_config capstone; then
       capstone=system
-    elif test -e "${source_path}/.git" -a $git_update = 'yes' ; then
+    elif test -e "${source_path}/.git" && test $git_update = 'yes' ; then
       capstone=git
     elif test -e "${source_path}/capstone/Makefile" ; then
       capstone=internal
@@ -5162,7 +5164,7 @@ fi
 # There is no point enabling this if cpuid.h is not usable,
 # since we won't be able to select the new routines.

-if test "$cpuid_h" = "yes" -a "$avx2_opt" != "no"; then
+if test "$cpuid_h" = "yes" && test "$avx2_opt" != "no"; then
   cat > $TMPC << EOF
 #pragma GCC push_options
 #pragma GCC target("avx2")
@@ -5220,7 +5222,7 @@ EOF
 fi

 cmpxchg128=no
-if test "$int128" = yes -a "$atomic128" = no; then
+if test "$int128" = yes && test "$atomic128" = no; then
   cat > $TMPC << EOF
 int main(void)
 {
@@ -5893,9 +5895,9 @@ fi

 # Mac OS X ships with a broken assembler
 roms=
-if test \( "$cpu" = "i386" -o "$cpu" = "x86_64" \) -a \
-        "$targetos" != "Darwin" -a "$targetos" != "SunOS" -a \
-        "$softmmu" = yes ; then
+if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
+        test "$targetos" != "Darwin" && test "$targetos" != "SunOS" && \
+        test "$softmmu" = yes ; then
     # Different host OS linkers have different ideas about the name of the ELF
     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
@@ -5907,7 +5909,7 @@ if test \( "$cpu" = "i386" -o "$cpu" = "x86_64" \) -a \
         fi
     done
 fi
-if test "$cpu" = "ppc64" -a "$targetos" != "Darwin" ; then
+if test "$cpu" = "ppc64" && test "$targetos" != "Darwin" ; then
   roms="$roms spapr-rtas"
 fi

@@ -6373,7 +6375,7 @@ if test "$modules" = "yes"; then
   echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
   echo "CONFIG_MODULES=y" >> $config_host_mak
 fi
-if test "$have_x11" = "yes" -a "$need_x11" = "yes"; then
+if test "$have_x11" = "yes" && test "$need_x11" = "yes"; then
   echo "CONFIG_X11=y" >> $config_host_mak
   echo "X11_CFLAGS=$x11_cflags" >> $config_host_mak
   echo "X11_LIBS=$x11_libs" >> $config_host_mak
@@ -6568,7 +6570,7 @@ fi
 if test "$vhost_scsi" = "yes" ; then
   echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
 fi
-if test "$vhost_net" = "yes" -a "$vhost_user" = "yes"; then
+if test "$vhost_net" = "yes" && test "$vhost_user" = "yes"; then
   echo "CONFIG_VHOST_NET_USED=y" >> $config_host_mak
 fi
 if test "$vhost_crypto" = "yes" ; then
@@ -6963,11 +6965,11 @@ elif test "$ARCH" = "sparc64" ; then
   QEMU_INCLUDES="-iquote \$(SRC_PATH)/tcg/sparc $QEMU_INCLUDES"
 elif test "$ARCH" = "s390x" ; then
   QEMU_INCLUDES="-iquote \$(SRC_PATH)/tcg/s390 $QEMU_INCLUDES"
-elif test "$ARCH" = "x86_64" -o "$ARCH" = "x32" ; then
+elif test "$ARCH" = "x86_64" || test "$ARCH" = "x32" ; then
   QEMU_INCLUDES="-iquote \$(SRC_PATH)/tcg/i386 $QEMU_INCLUDES"
 elif test "$ARCH" = "ppc64" ; then
   QEMU_INCLUDES="-iquote \$(SRC_PATH)/tcg/ppc $QEMU_INCLUDES"
-elif test "$ARCH" = "riscv32" -o "$ARCH" = "riscv64" ; then
+elif test "$ARCH" = "riscv32" || test "$ARCH" = "riscv64" ; then
   QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/riscv $QEMU_INCLUDES"
 else
   QEMU_INCLUDES="-iquote \$(SRC_PATH)/tcg/\$(ARCH) $QEMU_INCLUDES"
@@ -7384,7 +7386,7 @@ if test ! -z "$gdb_xml_files" ; then
   echo "TARGET_XML_FILES=$list" >> $config_target_mak
 fi

-if test "$target_user_only" = "yes" -a "$bflt" = "yes"; then
+if test "$target_user_only" = "yes" && test "$bflt" = "yes"; then
   echo "TARGET_HAS_BFLT=y" >> $config_target_mak
 fi
 if test "$target_bsd_user" = "yes" ; then
@@ -7506,7 +7508,7 @@ if test "$gprof" = "yes" ; then
   fi
 fi

-if test "$target_linux_user" = "yes" -o "$target_bsd_user" = "yes" ; then
+if test "$target_linux_user" = "yes" || test "$target_bsd_user" = "yes" ; then
   ldflags="$ldflags $textseg_ldflags"
 fi

@@ -7518,7 +7520,8 @@ fi
 #  - we build the system emulation for s390x (qemu-system-s390x)
 #  - KVM is enabled
 #  - the linker supports --s390-pgste
-if test "$TARGET_ARCH" = "s390x" -a "$target_softmmu" = "yes"  -a "$ARCH" = "s390x" -a "$kvm" = "yes"; then
+if test "$TARGET_ARCH" = "s390x" && test "$target_softmmu" = "yes" && \
+        test "$ARCH" = "s390x" && test "$kvm" = "yes"; then
     if ld_has --s390-pgste ; then
         ldflags="-Wl,--s390-pgste $ldflags"
     fi
-- 
2.20.1

^ permalink raw reply related	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-02-06 14:52 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-02-05  2:39 [Qemu-devel] [PATCH] configure: Avoid non-portable 'test -o/-a' Eric Blake
2019-02-05 13:12 ` Peter Maydell
2019-02-05 15:36 ` Philippe Mathieu-Daudé
2019-02-06 14:52 ` [Qemu-devel] [Qemu-trivial] " Laurent Vivier

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