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configure.ac: escape backslash chars in compiler version string 

When constructing CC_VERSION, escape backslash characters in the
compiler version string, so that they don't get interpreted as
escape sequences by the compiler.  This is especially important on
Windows, where the version string of MinGW may contain backslash
characters as part of paths.
This commit is contained in:
Ell 2018-11-11 05:45:07 -05:00
parent 45fc30caa7
commit c0b107531e
1 changed files with 7 additions and 5 deletions
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12
configure.ac
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@ -580,21 +580,23 @@ WARNING: GCC 7.2.0 has a serious bug affecting GEGL/GIMP. We advise
See https://bugzilla.gnome.org/show_bug.cgi?id=787222"
fi
# For GCC, use -v which has more information than --version.
CC_VERSION="\\\\t`$CC -v 2>&1 | sed -e 's/$/\\\\n\\\\t/g' | tr -d '\n'`"
CC_VERSION="`$CC -v 2>&1`"
else
# This is the list of common options used by autotools to check
# versions for various compilers.
CC_VERSION="\\\\t`$CC --version 2>&1 | sed -e 's/$/\\\\n\\\\t/g' | tr -d '\n'`"
CC_VERSION="`$CC --version 2>&1`"
if test $? != 0; then
CC_VERSION="\\\\t`$CC -v 2>&1` | sed -e 's/$/\\\\n\\\\t/g' | tr -d '\n'"
CC_VERSION="`$CC -v 2>&1`"
if test $? != 0; then
CC_VERSION="\\\\t`$CC -V 2>&1` | sed -e 's/$/\\\\n\\\\t/g' | tr -d '\n'"
CC_VERSION="`$CC -V 2>&1`"
if test $? != 0; then
CC_VERSION="\\\\t`$CC -qversion 2>&1` | sed -e 's/$/\\\\n\\\\t/g' | tr -d '\n'"
CC_VERSION="`$CC -qversion 2>&1`"
fi
fi
fi
fi
# Format and escape CC_VERSION
CC_VERSION="\\t`echo "$CC_VERSION" | sed -e 's/\\\\/\\\\\\\\/g;s/$/\\\\n\\\\t/g' | tr -d '\n'`"
AC_SUBST(CC_VERSION)
AC_HEADER_STDC