[Users] [Bug 4127] New: configure script assumes -export_dynamic always works on macOS

[noreply at thewildbeast.co.uk]

https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4127

            Bug ID: 4127
           Summary: configure script assumes -export_dynamic always works
                    on macOS
    Classification: Unclassified
           Product: Claws Mail
           Version: 3.17.1
          Hardware: Macintosh
                OS: other
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Other
          Assignee: users at lists.claws-mail.org
          Reporter: claws-mail at ryandesign.com

claws-mail fails to configure on the admittedly old Mac OS X 10.6.8:


checking whether to use libetpan... yes
checking for libetpan-config... /opt/local/bin/libetpan-config
checking libetpan/libetpan.h usability... yes
checking libetpan/libetpan.h presence... yes
checking for libetpan/libetpan.h... yes
checking whether libetpan-config hints compiles and links fine... no
*** Claws Mail requires libetpan 0.57 or newer. See http://www.etpan.org/ 
*** You can use --disable-libetpan if you don't need IMAP4 and/or NNTP support.
configure: error: libetpan 0.57 not found


Here's the full log from the MacPorts build system:

https://build.macports.org/builders/ports-10.6_i386_legacy-builder/builds/56474/steps/install-port/logs/stdio


libetpan is installed, but the configure script fails to detect it because it
is giving the linker a flag it does not understand, which causes an error
message. From config.log:


configure:20395: checking whether libetpan-config hints compiles and links fine
configure:20409: /usr/bin/gcc-4.2 -o conftest -pipe -Os -arch x86_64
-Wno-unused-function -Wno-pointer-sign -Wall -no-cpp-precomp -fno-common
-I/opt/local/include -I/opt/local/include -L/opt/local/lib
-Wl,-headerpad_max_install_names -arch x86_64 -Wl,-export_dynamic conftest.c 
-lm -lresolv -L/opt/local/lib -letpan -L/opt/local/lib
-Wl,-headerpad_max_install_names -L/opt/local/lib -L/opt/local/lib
-L/opt/local/lib -lcurl -lidn2 -lpsl -lssl -lcrypto -lssl -lcrypto -lz -lexpat
-lz -lssl -lcrypto -liconv -lsasl2 -lssl -lcrypto >&5
ld: unknown option: -export_dynamic
collect2: ld returned 1 exit status


Newer versions of Apple's ld understand -export_dynamic, but older ones don't.
You should check whether the linker understands the flag before you try to use
it.

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