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configure: Use $CPP instead of cpp directly 

The latter breaks in the case of cross-compilation, when `cpp` bears a
target prefix.
This commit is contained in:
Ben Gamari 2018-01-28 14:19:56 -05:00
parent 0167eac571
commit f93e890b4d
1 changed files with 2 additions and 1 deletions
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3
configure.ac
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@ -61,6 +61,7 @@ CFLAGS=
CXXFLAGS=
AC_PROG_CC
AC_PROG_CXX
AC_PROG_CPP
AX_CXX_COMPILE_STDCXX_11
@ -199,7 +200,7 @@ AC_SUBST(ENABLE_S3, [$enable_s3])
AC_LANG_POP(C++)
if test -n "$enable_s3"; then
declare -a aws_version_tokens=($(printf '#include <aws/core/VersionConfig.h>\nAWS_SDK_VERSION_STRING' | cpp -E | grep -v '^#.*' | sed 's/"//g' | tr '.' ' '))
declare -a aws_version_tokens=($(printf '#include <aws/core/VersionConfig.h>\nAWS_SDK_VERSION_STRING' | $CPP - | grep -v '^#.*' | sed 's/"//g' | tr '.' ' '))
AC_DEFINE_UNQUOTED([AWS_VERSION_MAJOR], ${aws_version_tokens@<:@0@:>@}, [Major version of aws-sdk-cpp.])
AC_DEFINE_UNQUOTED([AWS_VERSION_MINOR], ${aws_version_tokens@<:@1@:>@}, [Minor version of aws-sdk-cpp.])
fi