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curl_setup: Ensure no more than one IDN lib is enabled

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Prior to this change it was possible for libcurl to be built with both
Windows' native IDN lib (normaliz) and libidn2 enabled. It appears that
doesn't offer any benefit --and could cause a bug-- since libcurl's IDN
handling is written to use either one but not both.

Bug: https://github.com/curl/curl/issues/1441#issuecomment-297689856
Reported-by: Gisle Vanem
This commit is contained in:
Jay Satiro 2017-05-01 13:44:39 -04:00
parent 0912a5c760
commit 499a7288fe
1 changed files with 5 additions and 1 deletions
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6
lib/curl_setup.h
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@ -588,11 +588,15 @@ int netware_init(void);
#endif
#endif
#if defined(HAVE_LIBIDN2) && defined(HAVE_IDN2_H)
#if defined(HAVE_LIBIDN2) && defined(HAVE_IDN2_H) && !defined(USE_WIN32_IDN)
/* The lib and header are present */
#define USE_LIBIDN2
#endif
#if defined(USE_LIBIDN2) && defined(USE_WIN32_IDN)
#error "Both libidn2 and WinIDN are enabled, choose one."
#endif
#ifndef SIZEOF_TIME_T
/* assume default size of time_t to be 32 bit */
#define SIZEOF_TIME_T 4