First install openssl and nghttp2 from homebrew:
brew install nghttp2
brew remove curl
Then clone the curl master branch
git clone https://github.com/curl/curl
cd curl
Then configure with openssl and nghttp2:
./buildconf
./configure \
--with-ssl=/usr/local/opt/openssl \
--with-ca-bundle=/usr/local/etc/openssl/cert.pem \
--with-ca-path=/usr/local/etc/openssl/certs \
--with-nghttp2=/usr/local/opt/nghttp2 \
--enable-debug \
--enable-curldebug \
Here is another configuration for http/1 build:
./buildconf
./configure \
--without-nghttp2 \
--with-darwinssl \
--without-ca-bundle \
--without-ca-path \
--enable-static \
--disable-shared \
--enable-debug \
--enable-curldebug \
--without-brotli \
--without-librtmp \
--without-libidn2 \
--without-ldap
Confirm the config status. Then make and install (you really need to install because otherwise LLDB will probably use the system libcurl).
make -j8
make install DESTDIR="/Users/jeroen/libcurl"
Now build an application:
# Should be /usr/local/lib
pkg-config --cflags --libs libcurl
# Now build
clang -g ./docs/examples/crawler.c -o crawler.exe -lcurl $(pkg-config --cflags --libs libcurl libxml-2.0)
Conform that you link against libcurl in /usr/local:
otool -L crawler.exe
And then run the application in LLDB
lldb crawler.exe
First check image list to make sure we loaded the correct libcurl.dylib. Then press r to start running and bt to get a backtrace!
When done uninstall curl:
make uninstall
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