From: David Wells <drwells@email.unc.edu>
Date: Thu, 18 Jun 2020 21:28:48 +0000 (-0400)
Subject: Fix detection of muParser 2.3.2.
X-Git-Tag: v9.3.0-rc1~1401^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F10550%2Fhead;p=dealii.git

Fix detection of muParser 2.3.2.
---

diff --git a/cmake/modules/FindMUPARSER.cmake b/cmake/modules/FindMUPARSER.cmake
index 7f4066adb0..771d6ff5e8 100644
--- a/cmake/modules/FindMUPARSER.cmake
+++ b/cmake/modules/FindMUPARSER.cmake
@@ -42,9 +42,22 @@ DEAL_II_FIND_PATH(MUPARSER_INCLUDE_DIR muParserDef.h
 
 IF(EXISTS ${MUPARSER_INCLUDE_DIR}/muParserDef.h)
   FILE(STRINGS "${MUPARSER_INCLUDE_DIR}/muParserDef.h" MUPARSER_VERSION_STRING_LINE
+    # Try to match the line
+    #
+    #     #define MUP_VERSION _T("2.2.4")
     REGEX "#define MUP_VERSION _T"
     )
- 
+
+  IF("${MUPARSER_VERSION_STRING_LINE}" STREQUAL "")
+    # try again with the newer version format (starting in at least 2.3.2),
+    # which matches the line
+    #
+    #     static const string_type ParserVersion = string_type(_T("2.3.2"));
+    FILE(STRINGS "${MUPARSER_INCLUDE_DIR}/muParserDef.h" MUPARSER_VERSION_STRING_LINE
+      REGEX "string_type ParserVersion = string_type"
+      )
+  ENDIF()
+
   STRING(REGEX REPLACE ".*\"(.*)\".*" "\\1"
     _VERSION_STRING "${MUPARSER_VERSION_STRING_LINE}"
     )