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authorBen Gamari <ben@smart-cactus.org>2018-01-28T19·19-0500
committerBen Gamari <ben@smart-cactus.org>2018-01-29T07·20-0500
commitf93e890b4d19f48fefde449c46c29e8330b23998 (patch)
tree24a21b4c34c1ba4a905fcb3e5253db47e16d7db5
parent0167eac571d6d92f18640d05cfb7fa10a4cd0fd9 (diff)
configure: Use $CPP instead of cpp directly
The latter breaks in the case of cross-compilation, when `cpp` bears a
target prefix.
-rw-r--r--configure.ac3
1 files changed, 2 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 9db92ce91401..83b2346d065c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -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