buildroot/package/ltrace/ltrace-0.5.3-configure-fixes.patch

Fix several issues with the configure script:

 * Allow option values to contains equal signs, like
   CC="/foo/arm-linux-gcc --sysroot=/foobar/usr"

 * Parse the option before doing the tests so that CC/CFLAGS can be
   used during the tests.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 configure |   72 +++++++++++++++++++++++++++++++-------------------------------
 1 file changed, 37 insertions(+), 35 deletions(-)

Index: ltrace-0.5.3/configure
===================================================================
--- ltrace-0.5.3.orig/configure
+++ ltrace-0.5.3/configure
@@ -6,6 +6,38 @@
   exit 1
 fi
 
+CC=gcc
+CPPFLAGS=' -I /usr/include/libelf'
+CFLAGS='-g -O2'
+LIBS='-lelf '
+INSTALL='/usr/bin/install -c'
+iquote='-iquote '
+iquoteend=''
+
+prefix=/usr/local
+sysconfdir='${prefix}/etc'
+bindir='${prefix}/bin'
+mandir='${prefix}/share/man'
+docdir='${prefix}/share/doc/ltrace'
+for x_option
+do
+  if test -n "$x_prev"; then
+    eval $x_prev=\$x_option
+    x_prev=
+    continue
+  fi
+  case $x_option in
+    --*=* | *=*)
+      x_var=`echo $x_option | sed 's/^--//' | sed 's/=.*//'`
+      x_val=`echo $x_option | sed 's/^[^=]*=//'`
+      eval $x_var=\"$x_val\"
+      ;;
+    --*)
+      x_prev=`echo $x_option | sed 's/^--//'`
+      ;;
+  esac
+done
+
 echo -n "checking package name... "
 PACKAGE_NAME='ltrace'
 echo $PACKAGE_NAME
@@ -30,9 +62,10 @@
   return cplus_demangle();
 }
 EOF
-if gcc conftest.c -liberty 2>/dev/null
+if $CC $CFLAGS conftest.c -liberty 2>/dev/null
 then
   HAVE_LIBIBERTY=1
+  LIBS="$LIBS -liberty"
   echo "yes"
 else
   unset HAVE_LIBIBERTY
@@ -48,9 +81,10 @@
   return __cxa_demangle();
 }
 EOF
-if gcc conftest.c -lsupc++ 2>/dev/null
+if $CC $CFLAGS conftest.c -lsupc++ 2>/dev/null
 then
   HAVE_LIBSUPC__=1
+  LIBS="$LIBS -lsupc++"
   echo "yes"
 else
   unset HAVE_LIBSUPC__
@@ -67,7 +101,7 @@
   return 0;
 }
 EOF
-if gcc conftest.c 2>/dev/null
+if $CC $CFLAGS conftest.c 2>/dev/null
 then
   HAVE_ELF_C_READ_MMAP=1
   echo "yes"
@@ -77,38 +111,6 @@
 fi
 rm -f conftest.c a.out
 
-CC=gcc
-CPPFLAGS=' -I /usr/include/libelf'
-CFLAGS='-g -O2'
-LIBS='-lelf -lsupc++ -liberty '
-INSTALL='/usr/bin/install -c'
-iquote='-iquote '
-iquoteend=''
-
-prefix=/usr/local
-sysconfdir='${prefix}/etc'
-bindir='${prefix}/bin'
-mandir='${prefix}/share/man'
-docdir='${prefix}/share/doc/ltrace'
-for x_option
-do
-  if test -n "$x_prev"; then
-    eval $x_prev=\$x_option
-    x_prev=
-    continue
-  fi
-  case $x_option in
-    --*=* | *=*)
-      x_var=`echo $x_option | sed 's/^--//' | sed 's/=.*//'`
-      x_val=`echo $x_option | sed 's/^.*=//'`
-      eval $x_var=$x_val
-      ;;
-    --*)
-      x_prev=`echo $x_option | sed 's/^--//'`
-      ;;
-  esac
-done
-
 echo "configure: creating Makefile"
 #
 # Makefile.in -> Makefile