[GNUnet-SVN] [gnurl] 04/125: lib: don't export all symbols, just everything curl_*

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ng0 pushed a commit to branch master
in repository gnurl.

commit 4b414249107a782dca26926caa2947b9820d5255
Author: W. Mark Kubacki <address@hidden>
AuthorDate: Thu Nov 30 00:43:38 2017 +0100

    lib: don't export all symbols, just everything curl_*
    
    Absent any 'symbol map' or script to limit what gets exported, static
    linking of libraries previously resulted in a libcurl with curl's and
    those other symbols being (re-)exported.
    
    This did not happen if 'versioned symbols' were enabled (which is not
    the default) because then a version script is employed.
    
    This limits exports to everything starting in 'curl_*'., which is
    what "libcurl.vers" exports.
    
    This avoids strange side-effects such as with mixing methods
    from system libraries and those erroneously offered by libcurl.
    
    Closes #2127
---
 lib/Makefile.am | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 151c2615e..87c64f3a8 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -106,6 +106,8 @@ endif
 
 if CURL_LT_SHLIB_USE_VERSIONED_SYMBOLS
 libcurl_la_LDFLAGS_EXTRA += -Wl,--version-script=libcurl.vers
+else
+libcurl_la_LDFLAGS_EXTRA += -export-symbols-regex '^curl_.*'
 endif
 
 if USE_CPPFLAG_CURL_STATICLIB

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